{"id":430,"date":"2026-05-21T06:06:52","date_gmt":"2026-05-21T06:06:52","guid":{"rendered":"https:\/\/rock-crusher-tractor.com\/?post_type=product&#038;p=430"},"modified":"2026-05-21T06:06:52","modified_gmt":"2026-05-21T06:06:52","slug":"ep-cwb-2l-potato-harvest-big-bag-2-row","status":"publish","type":"product","link":"https:\/\/rock-crusher-tractor.com\/es\/producto\/ep-cwb-2l-potato-harvest-big-bag-2-row\/","title":{"rendered":"EP-CWB-2L Potato Harvester \u2013 Big Bag, 2-Row, On-Field Sorting"},"content":{"rendered":"<div style=\"font-family: Georgia,'Times New Roman',serif; font-size: clamp(14px,2vw + 10px,18px); color: #333; line-height: 1.75; word-break: break-word; overflow-wrap: break-word; max-width: 100%; box-sizing: border-box;\">\n<div style=\"display: flex; flex-wrap: wrap; gap: 2px; margin-bottom: 40px; border-radius: 6px; overflow: hidden;\">\n<div style=\"flex: 1 1 110px; background: #1a1a1a; color: #fff; text-align: center; padding: 16px 8px;\">\n<div style=\"font-size: clamp(18px,2.8vw+10px,28px); font-weight: bold; color: #f07c00; line-height: 1;\">700<\/div>\n<div style=\"font-size: clamp(10px,1.1vw+7px,12px); color: #bbb; margin-top: 4px;\">Kg per Big Bag<\/div>\n<\/div>\n<div style=\"flex: 1 1 110px; background: #222; color: #fff; text-align: center; padding: 16px 8px;\">\n<div style=\"font-size: clamp(18px,2.8vw+10px,28px); font-weight: bold; color: #f07c00; line-height: 1;\">2<\/div>\n<div style=\"font-size: clamp(10px,1.1vw+7px,12px); color: #bbb; margin-top: 4px;\">Bags Filled Simultaneously<\/div>\n<\/div>\n<div style=\"flex: 1 1 110px; background: #1a1a1a; color: #fff; text-align: center; padding: 16px 8px;\">\n<div style=\"font-size: clamp(18px,2.8vw+10px,28px); font-weight: bold; color: #f07c00; line-height: 1;\">16<\/div>\n<div style=\"font-size: clamp(10px,1.1vw+7px,12px); color: #bbb; margin-top: 4px;\">Processing Stages<\/div>\n<\/div>\n<div style=\"flex: 1 1 110px; background: #222; color: #fff; text-align: center; padding: 16px 8px;\">\n<div style=\"font-size: clamp(18px,2.8vw+10px,28px); font-weight: bold; color: #f07c00; line-height: 1;\">100<\/div>\n<div style=\"font-size: clamp(10px,1.1vw+7px,12px); color: #bbb; margin-top: 4px;\">HP Minimum<\/div>\n<\/div>\n<div style=\"flex: 1 1 110px; background: #1a1a1a; color: #fff; text-align: center; padding: 16px 8px;\">\n<div style=\"font-size: clamp(18px,2.8vw+10px,28px); font-weight: bold; color: #f07c00; line-height: 1;\">4,500<\/div>\n<div style=\"font-size: clamp(10px,1.1vw+7px,12px); color: #bbb; margin-top: 4px;\">Kg Machine Weight<\/div>\n<\/div>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 1 \u2014 PRODUCT OVERVIEW \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">From Soil to Big Bag \u2014 Harvest, Sort, and Fill in One Field Pass<\/h2>\n<p>Most potato harvesters leave the crop in a windrow. Then comes collection, transport to a packhouse, sorting by grade, and bagging \u2014 each step adding time, fuel, labour, and opportunities for tuber damage. The Watanabe <strong>EP-CWB-2L potato harvester<\/strong> eliminates all of those post-harvest handling stages from the field. It lifts 2 rows, separates soil and haulm through six web conveyor stages, passes potatoes across an operator picking station for quality removal, sorts by size, and fills commercial <strong>700 Kg big bags<\/strong> \u2014 all in one continuous operation as the tractor moves forward at 2\u20135 km\/h.<\/p>\n<p>The result at the field edge is big bags of sorted, graded, and quality-checked potato \u2014 ready for direct loading onto a truck and delivery to a chip processing plant, distributor, or export packaging point. No windrow. No separate collection pass. No packhouse sorting step. No intermediate handling between soil and saleable bag.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-446\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Overview-1.webp\" alt=\"Potato Harvest Overview 1\" width=\"1672\" height=\"941\" srcset=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Overview-1.webp 1672w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Overview-1-1280x720.webp 1280w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Overview-1-980x552.webp 980w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Overview-1-480x270.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1672px, 100vw\" \/><\/p>\n<p>This is a machine for a specific operational context: commercial potato supply chains where the end customer receives potatoes in big bags (FIBC \u2014 Flexible Intermediate Bulk Container) and where sorting takes place in the field rather than in a packhouse. In Korean commercial production, this context most commonly applies to:<\/p>\n<ul style=\"margin: 10px 0 16px 24px; padding: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">\n<li style=\"margin-bottom: 8px;\"><strong>Chip processing supply<\/strong> \u2014 companies such as major Korean snack manufacturers receive Atlantic potatoes in big bags and grade at the receiving facility. On-field size separation reduces the percentage of out-of-spec tubers in each bag, improving delivery quality and reducing rejection at the processor gate.<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>Large commercial farms and cooperatives<\/strong> \u2014 operations supplying 30+ tonnes of potatoes directly to distributors or export packers who use big bag format for bulk handling.<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>Export-oriented production<\/strong> \u2014 Jeju Island and some Gangwon-do commercial operations supply potatoes to Japan and Southeast Asia; big bag packaging is standard for these supply chains, and on-field sorting reduces the labour and cold-chain interruption that off-farm grading requires.<\/li>\n<\/ul>\n<p>The EP-CWB-2L is a large, complex machine: <strong>4,500 Kg<\/strong>, 8.8 meters long, 3.9 meters tall, with 16 mechanical and hydraulic stages between the digging blade and the filled bag. It operates at 2\u20135 km\/h \u2014 the slowest working speed in the entire Watanabe potato machinery line. The lower speed is a feature, not a limitation: each potato passes through more separation and quality control stages at lower speed, producing a cleaner final product than any higher-speed windrow digger can match. For supply chains where bag quality at delivery determines price or contract retention, the EP-CWB-2L earns its place in the equipment lineup.<\/p>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 2 \u2014 TECHNICAL SPECIFICATIONS \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"background: #f7f7f7; padding: 28px 3% 3%; border-radius: 6px; margin-top: 48px; box-sizing: border-box;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">Technical Specifications \u2013 EP-CWB-2L<\/h2>\n<p>All data sourced from the Watanabe official product brochure. The EP-CWB-2L is a single-model product \u2014 unlike the multi-variant AWB series, there is one specification that covers all units. The 4,500 Kg empty weight and 8,800 mm length reflect the full 16-stage processing and bagging system that the machine contains.<\/p>\n<div style=\"overflow-x: auto; width: 100%; margin: 20px 0 24px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: clamp(12px,1.4vw+8px,15px); min-width: 360px;\">\n<thead>\n<tr>\n<th style=\"background: #1a1a1a; color: #fff; padding: 11px 16px; text-align: left; white-space: nowrap; border-right: 1px solid #333;\">DATOS T\u00c9CNICOS<\/th>\n<th style=\"background: #f07c00; color: #fff; padding: 11px 16px; text-align: center; font-weight: bold; white-space: nowrap;\">EP-CWB-2L<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background: #2a2a2a; color: #ccc; padding: 6px 16px; font-size: 0.82em; font-weight: bold; letter-spacing: .07em; text-transform: uppercase;\" colspan=\"2\">Dimensions<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\">Longitud (mm)<\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>8,800<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #f5f5f5;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\">Ancho (mm)<\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>3,200<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\">Altura (mm)<\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>3,900<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #f5f5f5;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\"><strong>Empty Weight<\/strong><\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>4,500 Kg<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"background: #2a2a2a; color: #ccc; padding: 6px 16px; font-size: 0.82em; font-weight: bold; letter-spacing: .07em; text-transform: uppercase;\" colspan=\"2\">Tractor Requirements<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\"><strong>Engine Power (min.)<\/strong><\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>100 cv<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #f5f5f5;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\"><strong>Cardan Shaft Input Speed<\/strong><\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>540 RPM<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\"><strong>Control Valves Required<\/strong><\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>2<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #f5f5f5;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\"><strong>Working Speed<\/strong><\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>2\u20135 Km\/h<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"background: #2a2a2a; color: #ccc; padding: 6px 16px; font-size: 0.82em; font-weight: bold; letter-spacing: .07em; text-transform: uppercase;\" colspan=\"2\">Capacity<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5;\"><strong>Big Bag Capacity<\/strong><\/td>\n<td style=\"padding: 9px 16px; border-bottom: 1px solid #e5e5e5; text-align: center;\"><strong>700 Kg each (dual bags)<\/strong><\/td>\n<\/tr>\n<tr style=\"background: #f5f5f5;\">\n<td style=\"padding: 9px 16px;\"><strong>Size Sorting<\/strong><\/td>\n<td style=\"padding: 9px 16px; text-align: center;\"><strong>Small \/ Large potato separation<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"font-size: clamp(12px,1.2vw+8px,13px); color: #888; margin-top: 6px;\">\u24d8 cv = metric horsepower. 100 cv \u2248 98.6 HP. The CWB-2L requires both 540 RPM PTO (Cardan shaft input) and 2 hydraulic control valves from the tractor for the complete hydraulic drive system. Verify both outputs are available on your tractor before ordering. Mounting type: drawbar\/trailed connection. Data sourced from Watanabe official product brochure.<\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 3 \u2014 16-COMPONENT STRUCTURE \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"margin-top: 48px;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">The 16-Stage Processing Line \u2014 Every Component Explained<\/h2>\n<p>The EP-CWB-2L achieves its field-to-bag capability through sixteen distinct mechanical and hydraulic components arranged in sequence along the 8.8-meter machine length. Understanding what each component does helps in operating the machine correctly and maintaining it efficiently. Here is the full component sequence, from tractor connection to filled bag:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-447\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Structure-1.webp\" alt=\"Potato Harvest Structure 1\" width=\"1672\" height=\"941\" srcset=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Structure-1.webp 1672w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Structure-1-1280x720.webp 1280w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Structure-1-980x552.webp 980w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Structure-1-480x270.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1672px, 100vw\" \/><\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0;\">\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #1a1a1a; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2460 Drawbar<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The tractor connection point. The CWB-2L trails behind the tractor on a drawbar coupling \u2014 pulling the full 4,500 Kg machine on its own ground wheels through the potato field.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #c86000; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2461 Share Blade<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The flat blade that slides under the potato ridge at the set working depth, lifting the entire ridge soil mass \u2014 tubers and soil together \u2014 onto the primary web. Correct depth setting is critical for zero blade-cut damage.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #1a1a1a; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2462 Limiting Wheel<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">Rides on the un-dug soil beside the ridge to limit maximum blade depth. Prevents the blade from running too deep in soft soil or on downhill sections, maintaining consistent lift depth across variable terrain.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #c86000; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2463 24&#8243; Disc Guide<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">A 24-inch disc that runs in the inter-row space to guide the machine&#8217;s tracking along the planted rows. Keeps the share blades centered on the ridges throughout the pass, compensating for any tractor steering drift.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2464 1st Main Web<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The primary separation conveyor \u2014 a wide steel bar chain that carries the lifted ridge material and allows soil to fall through the bar gaps while tubers travel rearward. This is where the bulk of soil separation occurs.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2465 2nd Web<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">A secondary conveyor stage that continues soil separation from the primary web, handling the material that did not fully separate in the first pass. The dual-web arrangement provides more separation time and distance than single-web machines.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2466 Deviner Web<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The haulm (vine) separation stage \u2014 a specialized screen that pulls potato vine material away from the tubers. Essential for spring harvests where vine cover is significant. Keeps vine out of the big bags, which would otherwise require manual removal at the receiving facility.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #1a1a1a; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2467 Steering Wheels<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The machine&#8217;s own ground wheels that carry its weight and allow directional control as it follows the tractor. The hydraulic drive controls these wheels to keep the machine aligned with the row direction independently of terrain variation.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2468 3rd Web \u2014 Lifting<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">A third conveyor stage that elevates the cleaned tubers from the lower separation level to the upper section of the machine where sorting, picking, and bag-filling take place. The gentle incline design minimises impact as potatoes are elevated.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2469 Pintle Web<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">A specialized chain web with pintle-type links \u2014 metal pins extending from the chain links \u2014 that provide additional clinging surface for potatoes during the lifting stage, preventing tumbling and rolling on the inclined section. This gentling effect contributes directly to the machine&#8217;s low tuber damage profile.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #c86000; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u246a Separator<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The size sorting stage \u2014 separates small potatoes from large potatoes by allowing smaller tubers to pass through a graded gap or screen while larger ones continue on the main conveyor path. This is the on-field grading function that distinguishes the CWB-2L from all other Watanabe potato diggers.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #c86000; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u246b Picking Web<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">A slow-moving conveyor where human operators stationed on the machine remove damaged, diseased, or visually unsuitable tubers before they reach the big bags. This is the quality control stage \u2014 the operator inspection pass that no mechanical screen can replicate. The picking web is why the EP-CWB-2L can fill bags at processor-ready quality standards.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u246c Bag&#8217;s Web Feeder<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The final conveyor stage that directs the quality-controlled, separated potatoes into the big bag frames. Flow rate is controlled to fill bags smoothly without the drop-impact that direct chuting would cause, protecting tuber skin integrity at the final stage.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #f07c00; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u246d Double Bags (700 Kg each)<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">Two big bag frames positioned at the rear of the machine, each holding a 700 Kg FIBC bag. One bag receives large-grade tubers; the other receives small-grade tubers \u2014 simultaneously filling two different size grades as the machine harvests. When a bag is full, it is lowered to the ground and a new bag placed in the frame without stopping the harvest operation.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #1a1a1a; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u246e Operators Protection Canvas<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">A canopy or shade structure over the operator picking station that protects the staff manning the picking web from direct sun, rain, and flying soil during the harvest operation. Korea&#8217;s summer harvest conditions \u2014 June-July heat in Gangwon-do, April-May sun on Jeju \u2014 make this protection practically necessary for extended daily shifts.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-left: 4px solid #c86000; padding: 14px 16px; border-radius: 0 4px 4px 0;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 4px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u246f Complete Hydraulic Drive<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">All conveyors, the separator, the bag feeder, and the steering mechanism are driven by the machine&#8217;s integrated hydraulic system, powered by the tractor&#8217;s PTO via the Cardan shaft at 540 RPM. Hydraulic drive allows smooth, variable-speed control of each conveyor stage independently \u2014 a capability that rigid mechanical chain drive cannot provide \u2014 and is why 2 hydraulic control valves on the tractor are required.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 4 \u2014 HOW IT WORKS \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"background: #fafafa; padding: 28px 3% 3%; border-radius: 6px; margin-top: 48px; box-sizing: border-box;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">The EP-CWB-2L in Operation \u2014 Step by Step<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-417\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-3.webp\" alt=\"Potato Machinery Application 3\" width=\"1269\" height=\"952\" srcset=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-3.webp 1269w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-3-980x735.webp 980w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-3-480x360.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1269px, 100vw\" \/><\/p>\n<h3>Stage 1 \u2014 Lifting and Primary Soil Separation<\/h3>\n<p>The share blade slides under the ridge at the depth set by the limiting wheel, lifting the complete tuber zone onto the first main web. The 24&#8243; disc guide keeps the machine tracking the planted row precisely as the tractor advances. On the primary web, the bulk of the soil load falls through the bar gaps back to the field surface. The deviner web then removes vine and haulm material from the stream \u2014 at the end of this stage, what remains is mostly clean tubers with a small residual soil and debris load.<\/p>\n<h3>Stage 2 \u2014 Elevation and Final Cleaning<\/h3>\n<p>The 3rd web lifting stage and the pintle web carry the cleaned tubers upward from the separation level to the upper section of the machine where the operator platform and bag-filling equipment are located. The pintle web&#8217;s specialized surface prevents tubers from rolling or sliding during the inclined conveying, reducing impact-related skin damage. Any remaining soil clods or small stones that survived the primary separation are given additional opportunity to separate from the tubers during this elevation stage.<\/p>\n<h3>Stage 3 \u2014 Size Separation and Operator Quality Control<\/h3>\n<p>At the upper section, the separator stage grades the potato stream by size: smaller tubers pass through the separator gap and are directed to one big bag; larger tubers continue to the second big bag. The threshold between small and large grade can be adjusted to match the purchasing specification of the end customer \u2014 chip processor minimum diameters, export grade specifications, or fresh market sizing requirements.<\/p>\n<p>Simultaneously, the picking web passes the full tuber stream past the operator picking station at a speed slow enough for operators to visually inspect each potato and remove damaged, green, diseased, or otherwise unsuitable tubers. This manual quality stage is what allows the EP-CWB-2L to fill bags to processor-ready or export-grade standards without a packhouse grading step. The 2\u20135 km\/h working speed is set at the level that gives the picking web operators adequate inspection time per tuber \u2014 faster operation would move tubers past the operators too quickly for effective quality control.<\/p>\n<h3>Stage 4 \u2014 Bag Filling and Field Placement<\/h3>\n<p>The bag web feeder routes the two separated potato grades into their respective 700 Kg big bags, filling each gently to minimize drop-impact damage at the final handling stage. When a bag is full, the operator signals the tractor driver to briefly pause while the full bag is lowered to the ground alongside the machine and an empty bag placed in the frame. This bag change takes approximately 2\u20133 minutes and is the only scheduled stop in the harvest operation \u2014 unlike windrow-based harvesters that require complete separate collection passes.<\/p>\n<p>The full bags are left standing in the field for loading by a front loader or telehandler at the end of the day&#8217;s harvest run, or collected by a logistics vehicle following the harvest machine at a short interval. Either approach gives a clear field with sorted, filled big bags at regular intervals \u2014 ready for immediate loading and transport to the delivery point.<\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 5 \u2014 CORE ADVANTAGES \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"margin-top: 48px;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">Key Advantages of the EP-CWB-2L Harvest System<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-448 aligncenter\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-1.webp\" alt=\"Potato Harvest 1\" width=\"600\" height=\"600\" srcset=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-1.webp 600w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-1-480x480.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 600px, 100vw\" \/><\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px;\">\n<div style=\"flex: 1 1 240px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-top: 4px solid #f07c00; padding: 18px 20px; border-radius: 0 0 4px 4px;\">\n<p style=\"font-size: clamp(14px,1.6vw+9px,16px); font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">\u25a0 Harvest to Bag in One Pass<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">Eliminates windrow formation, collection, transport, packhouse sorting, and bagging as separate operations. What used to require four to six post-harvest steps \u2014 each adding time, fuel, labour, and cumulative tuber handling damage \u2014 is consolidated into one continuous field operation.<\/p>\n<\/div>\n<div style=\"flex: 1 1 240px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-top: 4px solid #f07c00; padding: 18px 20px; border-radius: 0 0 4px 4px;\">\n<p style=\"font-size: clamp(14px,1.6vw+9px,16px); font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">\u25a0 On-Field Size Grading<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">Small and large potatoes are separated automatically in the field, filling separate bags by grade. For commercial supply to chip processors or export buyers who specify minimum tuber diameter, on-field grading eliminates the rejection risk from out-of-spec tubers mixed through an unsorted bag \u2014 improving delivery quality and the farm&#8217;s reliability as a supplier.<\/p>\n<\/div>\n<div style=\"flex: 1 1 240px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-top: 4px solid #f07c00; padding: 18px 20px; border-radius: 0 0 4px 4px;\">\n<p style=\"font-size: clamp(14px,1.6vw+9px,16px); font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">\u25a0 Operator Picking Station<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">The picking web gives the harvest crew the ability to remove damaged, diseased, or visually non-conforming tubers before they reach the bag. No mechanical sorter can match human visual quality detection \u2014 this operator station is what makes it possible to fill processor-grade or export-grade bags directly in the field without a subsequent packhouse inspection step.<\/p>\n<\/div>\n<div style=\"flex: 1 1 240px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-top: 4px solid #f07c00; padding: 18px 20px; border-radius: 0 0 4px 4px;\">\n<p style=\"font-size: clamp(14px,1.6vw+9px,16px); font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">\u25a0 Minimum Handling, Lower Damage<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">Every additional handling step \u2014 transferring potatoes from windrow to trailer, trailer to grader, grader to bagging conveyor \u2014 adds cumulative bruising. The CWB-2L&#8217;s single continuous field-to-bag path reduces total handling contacts from six or more (in a typical windrow \u2192 packhouse workflow) to the controlled web-conveyor sequence of the machine itself.<\/p>\n<\/div>\n<div style=\"flex: 1 1 240px; box-sizing: border-box; background: #fff; border: 1px solid #e8e8e8; border-top: 4px solid #f07c00; padding: 18px 20px; border-radius: 0 0 4px 4px;\">\n<p style=\"font-size: clamp(14px,1.6vw+9px,16px); font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">\u25a0 Standard Commercial Packaging<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">700 Kg FIBC big bags are the standard bulk potato packaging format for chip processors, large distributors, and export operations. Filling this format directly in the field means the product moves from harvest to delivery without repackaging \u2014 eliminating a further handling step and the capital cost of packhouse bagging equipment.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 6 \u2014 APPLICATION SCENARIOS \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"margin-top: 48px;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">Where the EP-CWB-2L Gets Used<\/h2>\n<h3>\ud83c\udf3f Commercial Chip Processing Supply \u2014 Atlantic Variety<\/h3>\n<p>Atlantic potato, the primary chip processing variety in Korea, is grown under contract to major snack manufacturers. Chip processors \u2014 including the large Korean confectionery companies that dominate the domestic snack market \u2014 receive commercial supply in big bags and specify minimum tuber diameter and maximum defect rates. Meeting these delivery specifications while managing the volume required under a supply contract is the central operational challenge for larger Atlantic growers.<\/p>\n<p>The EP-CWB-2L directly addresses this challenge. The separator stage separates tubers below the minimum diameter into a separate bag (which can be sold into the fresh market or processing secondary grade), while the picking web operators catch damaged or visually defective tubers before they reach the primary grade bag. The result is a big bag filled to the processor&#8217;s specification in the field \u2014 no packhouse re-sorting required, and a lower rejection rate at the processor&#8217;s receiving gate.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-445\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Application-1.webp\" alt=\"Potato Harvest Application 1\" width=\"1672\" height=\"941\" srcset=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Application-1.webp 1672w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Application-1-1280x720.webp 1280w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Application-1-980x552.webp 980w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Harvest-Application-1-480x270.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1672px, 100vw\" \/><\/p>\n<h3>\ud83c\udf3b Export-Grade Potato Operations<\/h3>\n<p>Korean potato exports \u2014 primarily to Japan, Southeast Asia, and parts of the Middle East \u2014 require consistent size grading, documented quality inspection, and standard big bag packaging. Operations specifically growing for export markets face the most demanding post-harvest specification requirements of any Korean potato supply chain, and the cost of failing a buyer inspection at the destination port is substantially higher than a domestic delivery rejection.<\/p>\n<p>For Jeju Island winter-spring potato producers supplying Japanese importers, and for Gangwon-do commercial operations serving Southeast Asian distributors, the EP-CWB-2L provides the on-field grading and quality control capability that transforms what would otherwise require a packhouse operation into a field harvest workflow \u2014 reducing total supply chain complexity and the cold-chain interruptions that packhouse handling introduces.<\/p>\n<h3>\ud83c\udfd7 Cooperatives with Direct Bulk Delivery Contracts<\/h3>\n<p>Agricultural cooperatives (\ub18d\uc5c5\ud611\ub3d9\uc870\ud569) in Korea increasingly hold direct supply contracts with large retailers (Emart, Homeplus, Lotte Mart) and regional distributors who receive potatoes in big bags for in-house sorting and retail packaging. For cooperatives consolidating production from multiple member farms for bulk delivery, having harvest equipment that fills big bags in the field simplifies the logistics considerably \u2014 each member farm&#8217;s harvest can be delivered directly from the field to the cooperative&#8217;s dispatch point in standard big bags, without an intermediate grading facility.<\/p>\n<p>The picking web operator crew typically consists of 2\u20134 workers per machine depending on tuber density and working speed. For cooperatives, this crew often comes from among the member farms&#8217; own workforce during the harvest period \u2014 a seasonal labour arrangement that avoids the capital cost of a full packhouse operation.<\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 7 \u2014 SYSTEM POSITION + COMPARISON \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"background: #f0f5f9; border: 1px solid #dce8f0; padding: 28px 3% 3%; border-radius: 6px; margin-top: 48px; box-sizing: border-box;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">Step 7 Alternative \u2014 When to Choose the CWB-2L Over the AWB Series<\/h2>\n<p>The EP-CWB-2L occupies the same position in the Watanabe potato system as the AWB digger series \u2014 <strong>Step 7, Harvest<\/strong>. The choice between them depends on how you need the harvested potatoes delivered. Use this comparison to identify the right approach:<\/p>\n<div style=\"overflow-x: auto; width: 100%; margin: 20px 0 24px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: clamp(12px,1.4vw+8px,15px); min-width: 500px;\">\n<thead>\n<tr>\n<th style=\"background: #1a1a1a; color: #fff; padding: 10px 13px; text-align: left; white-space: nowrap;\">Factor<\/th>\n<th style=\"background: #1a1a1a; color: #fff; padding: 10px 13px; text-align: center; white-space: nowrap;\">AWB Series Digger<\/th>\n<th style=\"background: #f07c00; color: #fff; padding: 10px 13px; text-align: center; white-space: nowrap;\">EP-CWB-2L<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5;\">Output format<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">Windrow in field<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center; font-weight: bold;\">Filled big bags (700 Kg each)<\/td>\n<\/tr>\n<tr style=\"background: #fdf8f2;\">\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5;\">Size grading<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">Not included<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center; font-weight: bold;\">Built-in, field-level<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5;\">Quality control<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">Post-harvest (packhouse)<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center; font-weight: bold;\">In-field (picking web operators)<\/td>\n<\/tr>\n<tr style=\"background: #fdf8f2;\">\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5;\">Velocidad de trabajo<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">3\u201310 km\/h<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">2\u20135 km\/h<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5;\">Machine weight<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">800\u20133,000 Kg<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center; font-weight: bold;\">4,500 Kg<\/td>\n<\/tr>\n<tr style=\"background: #fdf8f2;\">\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5;\">Operators needed<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center;\">Tractor driver only<\/td>\n<td style=\"padding: 9px 13px; border-bottom: 1px solid #e5e5e5; text-align: center; font-weight: bold;\">Driver + 2\u20134 picking crew<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 13px;\">Post-harvest steps needed<\/td>\n<td style=\"padding: 9px 13px; text-align: center;\">Collection, transport, sort, bag<\/td>\n<td style=\"padding: 9px 13px; text-align: center; font-weight: bold;\">Load bags \u2014 done<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><strong>Choose the AWB digger series<\/strong> (<a style=\"color: #f07c00; text-decoration: none;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/producto\/ep-awb-1600-potato-digger-2-row-75hp\/\">mounted<\/a> or <a style=\"color: #f07c00; text-decoration: none;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/producto\/ep-awb-1600-trailed-potato-digger-2-4-row\/\">trailed<\/a>) when your supply chain handles sorting and bagging off-farm, when daily harvest throughput speed is the primary concern, or when you do not supply to a buyer with specific bag-grade delivery specifications.<\/p>\n<p><strong>Choose the EP-CWB-2L<\/strong> when your potato supply chain ends in filled big bags \u2014 to a chip processor, export buyer, or distributor \u2014 and when on-field grading and quality control would eliminate one or more packhouse steps that currently add time, labour, and handling damage to your operation.<\/p>\n<p>The full seven-step Watanabe potato system applies for both harvest options. Steps 1\u20136 remain identical regardless of which harvest machine you select at Step 7:<\/p>\n<div style=\"display: flex; flex-direction: column; gap: 8px; margin: 16px 0;\">\n<div style=\"display: flex; flex-wrap: wrap; gap: 8px; background: #fff; border-radius: 4px; padding: 10px 14px; border-left: 3px solid #ccc; box-sizing: border-box; align-items: center;\"><span style=\"background: #e0e0e0; color: #555; font-weight: bold; font-size: clamp(11px,1.1vw+7px,12px); padding: 3px 9px; border-radius: 20px; white-space: nowrap;\">STEPS 1\u20136<\/span><br \/>\n<span style=\"color: #666; font-size: clamp(12px,1.3vw+8px,14px);\">Stone clearance (<a style=\"color: #f07c00; text-decoration: none;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/producto\/ep-ew-4000-rock-rake-3-6m-tractor-75hp\/\">rastrillo de piedra<\/a>) \u2192 Tillage (<a style=\"color: #f07c00; text-decoration: none;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/producto\/psw-3200-rotavator-heavy-duty-tractor-mounted-rotary-tiller-with-3-0-3-6-m-working-width\/\">Motocultor<\/a>) \u2192 Furrowing \u2192 Fertilizing \u2192 <a style=\"color: #f07c00; text-decoration: none;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/producto\/ep-pai-2100-panther-potato-planter-2-4-row\/\">Planting<\/a> \u2192 <a style=\"color: #f07c00; text-decoration: none;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/producto\/ep-era-rotary-cultivator-2100-3100-5100-potato\/\">Mid-Season Cultivation<\/a><\/span><\/div>\n<div style=\"display: flex; flex-wrap: wrap; gap: 8px; background: #fff3e8; border-radius: 4px; padding: 10px 14px; border-left: 3px solid #f07c00; box-sizing: border-box; align-items: center;\"><span style=\"background: #f07c00; color: #fff; font-weight: bold; font-size: clamp(11px,1.1vw+7px,12px); padding: 3px 9px; border-radius: 20px; white-space: nowrap;\">STEP 7<\/span><br \/>\n<span style=\"color: #555; font-size: clamp(12px,1.3vw+8px,14px);\">Harvest \u2014 <strong>EP-CWB-2L<\/strong> (big bag delivery) or EP-AWB series (windrow delivery) \u2014 depending on your supply chain requirements.<\/span><\/div>\n<\/div>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-416\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-2.webp\" alt=\"Potato Machinery Application 2\" width=\"1269\" height=\"952\" srcset=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-2.webp 1269w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-2-980x735.webp 980w, https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2026\/05\/Potato-Machinery-Application-2-480x360.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1269px, 100vw\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 8 \u2014 QUALITY & SERVICE \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"margin-top: 48px;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">Watanabe Engineering \u2014 Built for Commercial Supply Chain Standards<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start;\">\n<div style=\"flex: 1 1 260px; min-width: 200px;\"><img decoding=\"async\" style=\"width: 100%; height: auto; display: block; border-radius: 4px;\" title=\"Certificaciones Watanabe\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2025\/11\/about-watababe-Certifications.webp\" alt=\"Watanabe quality certifications \u2013 potato harvest machinery\" \/><\/div>\n<div style=\"flex: 2 1 260px; min-width: 220px;\">\n<p>The EP-CWB-2L is the most complex implement in the Watanabe potato machinery lineup \u2014 16 interacting mechanical and hydraulic components operating continuously across a full harvest day. Watanabe&#8217;s 50+ years of manufacturing experience in Paran\u00e1, Brazil produced a design that has been validated across Brazilian commercial potato operations with similar scale and supply chain requirements to Korean commercial production.<\/p>\n<p>The hydraulic drive system \u2014 which powers all conveyors independently \u2014 is particularly important for quality maintenance: hydraulic speed control allows each web stage to be tuned to the optimal conveying velocity for the current crop density and soil conditions. A fully mechanical fixed-ratio drive cannot provide this operational flexibility. The 2 control valve requirement on the tractor reflects this full hydraulic drive scope.<\/p>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" style=\"width: 100%; max-width: 820px; height: auto; display: block; margin: 24px auto; border-radius: 4px;\" title=\"Watanabe Factory \u2013 Castro, Paran\u00e1\" src=\"https:\/\/rock-crusher-tractor.com\/wp-content\/uploads\/2025\/11\/watanabe-factory.webp\" alt=\"Watanabe manufacturing facility \u2013 producing potato harvest machinery since 1970\" \/><\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px; margin-top: 20px;\">\n<div style=\"flex: 1 1 220px; background: #f7f7f7; border-radius: 4px; padding: 16px 18px; box-sizing: border-box;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 6px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2713 Pre-Sale Tractor Compatibility<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.2vw+8px,13px);\">We verify both PTO output (540 RPM) and 2 hydraulic control valve availability on your tractor before the order is placed. The separator grade threshold \u2014 small vs large potato division \u2014 is also confirmed at the pre-sale stage to match your buyer&#8217;s specification.<\/p>\n<\/div>\n<div style=\"flex: 1 1 220px; background: #f7f7f7; border-radius: 4px; padding: 16px 18px; box-sizing: border-box;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 6px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2713 Web Components in Local Stock<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.2vw+8px,13px);\">Primary web bars, pintle web components, and share blade wear parts for the CWB-2L are stocked locally in Ansan-si. The machine&#8217;s complexity makes pre-season inspection and parts pre-ordering particularly important \u2014 a mid-harvest breakdown on a 4,500 Kg multi-stage machine has a longer resolution time than a simpler digger.<\/p>\n<\/div>\n<div style=\"flex: 1 1 220px; background: #f7f7f7; border-radius: 4px; padding: 16px 18px; box-sizing: border-box;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 6px 0; font-size: clamp(13px,1.4vw+8px,15px);\">\u2713 Crew Setup Guidance<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(12px,1.2vw+8px,13px);\">The picking web crew size and positioning, bag change procedure, and separator grade adjustment are all covered in our pre-season setup support. Getting these operational parameters right before the first harvest day has a direct impact on daily output quality and crew efficiency.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 9 \u2014 FAQ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"background: #f7f7f7; padding: 28px 3% 3%; border-radius: 6px; margin-top: 48px; box-sizing: border-box;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">Frequently Asked Questions \u2013 EP-CWB-2L Potato Harvester<\/h2>\n<div style=\"display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px;\">\n<div style=\"background: #fff; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #f07c00;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">What exactly is a &#8220;big bag&#8221; and what is the 700 Kg specification?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">A big bag \u2014 formally called a Flexible Intermediate Bulk Container (FIBC) or jumbo bag \u2014 is a large industrial fabric sack designed for bulk dry goods. Standard sizes commonly used in Korean commercial potato distribution hold 500\u20131,000 Kg. The EP-CWB-2L is designed to fill bags of 700 Kg capacity. FIBC bags are standard receiving format at chip processing plants and large distribution centres \u2014 they stack efficiently on pallets, handle by forklift, and can be discharged directly into processing lines. Bags must be sourced separately by the operator; we can advise on appropriate FIBC specifications for potato harvest use.<\/p>\n<\/div>\n<div style=\"background: #fafafa; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #ddd;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">How does the on-field size separation work?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">The separator stage passes the tuber stream across a graded gap or screen: smaller tubers fall through to a separate path leading to the small-grade bag, while larger tubers continue to the large-grade bag. The effective separator threshold \u2014 the dividing size between small and large \u2014 is adjustable and should be set to match your buyer&#8217;s specification before the harvest season starts. We provide guidance on the separator adjustment procedure at the pre-sale and pre-season setup stages. The adjustment should be confirmed with a calibration pass before beginning commercial harvest to ensure the separation threshold matches the target grade split.<\/p>\n<\/div>\n<div style=\"background: #fff; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #f07c00;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">How many operators are needed on the picking web?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">Typically 2\u20134 operators on the picking web, depending on tuber density, working speed, and quality control standards. At 2 km\/h through a dense crop at high harvest quality standards, 3\u20134 operators can inspect the full stream. At 4\u20135 km\/h with a cleaner crop, 2 operators may be sufficient. In commercial Korean harvest operations, the picking crew often consists of seasonal agricultural workers or cooperative member households \u2014 establishing the right crew size for your crop before the harvest season reduces bottlenecks during the actual harvest window.<\/p>\n<\/div>\n<div style=\"background: #fafafa; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #ddd;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">What happens when a big bag is full?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">When a bag reaches the 700 Kg fill weight, the tractor driver stops briefly while the harvest crew lowers the full bag to the ground using the bag frame mechanism and places an empty bag in the frame. This bag change typically takes 2\u20133 minutes. Full bags are left standing in the field in a line at the rear of the machine&#8217;s path \u2014 they are collected by a front loader or telehandler at the end of the day&#8217;s run, or by a following collection vehicle. The bag change stop is the only scheduled operational pause in the harvest day \u2014 unlike windrow-based harvesters where collection is a completely separate subsequent operation.<\/p>\n<\/div>\n<div style=\"background: #fff; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #f07c00;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">Why is the working speed 2\u20135 km\/h \u2014 slower than the AWB digger series?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">The lower working speed is a necessary feature of the CWB-2L&#8217;s design, not a limitation. Two factors require the reduced speed: (1) the multi-stage separation chain \u2014 six web conveyor stages need sufficient time to separate soil, vines, and debris thoroughly before tubers reach the operator station; (2) the picking web quality control \u2014 at higher speeds, tubers pass the operators too fast for effective visual inspection. The 2\u20135 km\/h range represents the balance between acceptable harvest throughput and the quality of separation and inspection that makes field-to-big-bag viable. Daily harvest area is lower than the AWB series, but post-harvest handling labour is eliminated \u2014 the net operational efficiency depends on your specific supply chain.<\/p>\n<\/div>\n<div style=\"background: #fafafa; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #ddd;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">Is the EP-CWB-2L suitable for hillside or terraced fields?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">The EP-CWB-2L is a large machine \u2014 8.8 meters long, 3.9 meters tall, 4,500 Kg empty weight. It is designed for open, relatively flat to gently sloped commercial potato fields with adequate field access for a machine of this size. Tight terraced plots, steep hillsides, and narrow farm tracks are not appropriate operating environments for the CWB-2L. For hillside and terraced Korean potato production, the compact EP-AWB-1600 mounted digger series is the more practical choice. If you are uncertain whether your fields are suitable for the CWB-2L, discuss your field dimensions, access routes, and slope profiles with us before ordering.<\/p>\n<\/div>\n<div style=\"background: #fff; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #f07c00;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">What preparation does the field need before the CWB-2L harvest pass?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">The same seven-step sequence applies as for any Watanabe harvest machine: stone clearance, primary tillage, furrowing, fertilization, planting, mid-season cultivation \u2014 all performed correctly across the season. The share blade depth setting before harvest is particularly critical for the CWB-2L because cut tubers reaching the picking web increase operator workload and reduce the percentage of the batch that passes quality control. Allow adequate vine death or vine kill time before harvest to reduce the deviner web load and minimize vine in the bags.<\/p>\n<\/div>\n<div style=\"background: #fafafa; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #ddd;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">How does the complete hydraulic drive affect maintenance requirements?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">The hydraulic drive system requires checking hydraulic oil level and condition, inspecting all hose connections for leaks or wear, and confirming hydraulic cylinder and motor operation before each season start. Hydraulic oil should be changed per the manufacturer&#8217;s schedule \u2014 contaminated hydraulic oil is the leading cause of premature hydraulic component failure on complex agricultural machines. We provide the Watanabe maintenance schedule and specification documentation at delivery. Given the machine&#8217;s complexity, we recommend a thorough pre-season inspection by a competent hydraulic machinery mechanic for the first two seasons of operation.<\/p>\n<\/div>\n<div style=\"background: #fff; border-radius: 4px; padding: 16px 20px; border-left: 3px solid #f07c00;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 8px 0;\">How many hectares per day can the EP-CWB-2L harvest?<\/p>\n<p style=\"margin: 0; color: #555; font-size: clamp(13px,1.4vw+8px,15px);\">At a working speed of 3 km\/h and 60 cm row spacing, the productive field throughput is approximately 0.36 hectares per hour of actual travel time. Accounting for bag changes, headland turns, and typical operational pauses, a realistic daily harvest area is 2\u20133 hectares in a full working day. This is lower than the AWB digger series, but the CWB-2L replaces multiple post-harvest operations that the AWB windrow approach still requires. The net daily throughput comparison should include all steps from field to delivered bag, not just the harvest machine travel time.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 SECTION 10 \u2014 CUSTOMER REVIEWS \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"margin-top: 48px;\">\n<h2 style=\"font-size: clamp(18px,2.5vw+10px,26px); background: linear-gradient(to right,#1a1a1a 0%,#2e2e2e 72%,#c86000 100%); color: #fff; padding: 14px 20px; border-radius: 4px; margin: 0 0 20px 0; line-height: 1.3;\">What Our Customers Say<\/h2>\n<div style=\"display: flex; flex-direction: column; gap: 16px;\">\n<div style=\"border: 1px solid #e8e8e8; border-radius: 4px; padding: 20px; background: #fff;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 2px 0;\">Ha Seong-tae \u2014 Atlantic Contract Potato Farm (22 ha), Pyeongchang-gun, Gangwon-do (summer 2024)<\/p>\n<p style=\"color: #f07c00; margin: 0 0 12px 0; font-size: 0.88em;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"color: #444; margin: 0; font-size: clamp(13px,1.4vw+8px,15px);\">&#8220;We supply Atlantic to one of the major chip manufacturers under a multi-year contract with strict size grade and defect limits. Before the CWB-2L we sorted at a rented packhouse facility \u2014 the added cost and two extra handling steps were eroding the contract margin. Two seasons with the CWB-2L and we now deliver direct from the field. Rejection rate at the processor gate dropped from about 8% to under 2% \u2014 the on-field picking web makes all the difference for catching the damaged ones before they reach the bag. Machine runs well on our 115 HP John Deere with 2 remote valves.&#8221;<\/p>\n<\/div>\n<div style=\"border: 1px solid #e8e8e8; border-radius: 4px; padding: 20px; background: #fafafa;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 2px 0;\">Yim Jae-hyeon \u2014 Export Potato Operation (Haryoung for Japan market), Seogwipo, Jeju Island (spring 2025)<\/p>\n<p style=\"color: #f07c00; margin: 0 0 12px 0; font-size: 0.88em;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"color: #444; margin: 0; font-size: clamp(13px,1.4vw+8px,15px);\">&#8220;Supplying to a Japanese importer who specifies 60+ mm diameter in one grade and 40\u201360 mm in another, both in 700 Kg big bags. Before CWB-2L we had two separate sorting sessions \u2014 harvest to windrow, collect, sort at a facility, bag. The machine now does all of that in the field. Japanese buyer&#8217;s inspection team was impressed with the grade consistency in the bags. Slower than a standard digger at 2\u20133 km\/h on the Jeju basalt fields, but for export-grade supply the extra on-field time is more than recovered by eliminating the packhouse step entirely.&#8221;<\/p>\n<\/div>\n<div style=\"border: 1px solid #e8e8e8; border-radius: 4px; padding: 20px; background: #fff;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 2px 0;\">Lim Bo-young \u2014 Agricultural Cooperative Manager, Hoengseong-gun, Gangwon-do (2024 harvest)<\/p>\n<p style=\"color: #f07c00; margin: 0 0 12px 0; font-size: 0.88em;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"color: #444; margin: 0; font-size: clamp(13px,1.4vw+8px,15px);\">&#8220;Our cooperative of six member farms holds a direct supply contract with a large retail distributor who receives in big bags. We run the CWB-2L as cooperative-shared equipment across all six farms during the harvest window \u2014 3\u20134 days per farm at 2\u20133 hectares per day. The bags go directly from the field to our cold storage and then to the distributor&#8217;s facility. We have a three-person picking crew that rotates across member farms. The Korea service team helped us plan the crew rotation and bag collection logistics before first use \u2014 that operational planning support was valuable.&#8221;<\/p>\n<\/div>\n<div style=\"border: 1px solid #e8e8e8; border-radius: 4px; padding: 20px; background: #fafafa;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 2px 0;\">Ko Dong-jin \u2014 Contract Harvest Service, Wonju, Gangwon-do (2025)<\/p>\n<p style=\"color: #f07c00; margin: 0 0 12px 0; font-size: 0.88em;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"color: #444; margin: 0; font-size: clamp(13px,1.4vw+8px,15px);\">&#8220;Running CWB-2L as a contract service for three farms that all supply to chip processors. The daily area is lower than with a high-speed trailed digger, but the contract pricing reflects the full-service \u2014 harvest, grade, bag \u2014 rather than just digging. The farms I service save the packhouse step entirely, which is worth more to them than having a slightly larger windrow at the end of the day. Machine has been reliable through two seasons. Pre-season setup support from the Korea team covered separator adjustment and picking web crew positioning, which was helpful for the first season.&#8221;<\/p>\n<\/div>\n<div style=\"border: 1px solid #e8e8e8; border-radius: 4px; padding: 20px; background: #fff;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 2px 0;\">Bang Hyun-soo \u2014 Large Commercial Potato Farm (Atlantic, 35 ha), Jeongseon-gun, Gangwon-do (2024 and 2025)<\/p>\n<p style=\"color: #f07c00; margin: 0 0 12px 0; font-size: 0.88em;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"color: #444; margin: 0; font-size: clamp(13px,1.4vw+8px,15px);\">&#8220;We run both a CWB-2L and an AWB-1600 CAR trailed digger \u2014 CWB-2L for the Atlantic supply contract sections where bag grade matters, AWB-1600 CAR for the fresh market sections where we sell through a local auction. Two seasons with this split approach and it works well. The CWB-2L section&#8217;s contract retention and price premium have more than justified the machine&#8217;s cost compared to sending everything through the packhouse. One comment: have a well-organized bag change and collection logistics plan ready before harvest starts \u2014 it&#8217;s the CWB-2L&#8217;s operational complexity that requires the most preparation.&#8221;<\/p>\n<\/div>\n<div style=\"border: 1px solid #e8e8e8; border-radius: 4px; padding: 20px; background: #fafafa;\">\n<p style=\"font-weight: bold; color: #1a1a1a; margin: 0 0 2px 0;\">Ji Young-hee \u2014 Organic Premium Potato Farm (Dejima, direct sales), Inje-gun, Gangwon-do (spring 2025)<\/p>\n<p style=\"color: #f07c00; margin: 0 0 12px 0; font-size: 0.88em;\">\u2605\u2605\u2605\u2605\u2605<\/p>\n<p style=\"color: #444; margin: 0; font-size: clamp(13px,1.4vw+8px,15px);\">&#8220;We supply organic Dejima to a premium online grocery platform that requires 60+ mm grade in 700 Kg FIBC, zero diseased or visually defective tubers. No packhouse would take on grading at our volumes with those standards \u2014 we had to do it manually after harvest before CWB-2L. Now the picking web handles most of the selection in field and we do a quick bag inspection before dispatch. The grade rejection rate from the online platform dropped significantly in the first season. Working at 2\u20133 km\/h on our highland fields is fine for the area we work.&#8221;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 CONTACT CTA \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><\/p>\n<div style=\"background: #1a1a1a; color: #fff; padding: 3%; border-radius: 6px; margin-top: 52px; text-align: center; box-sizing: border-box;\">\n<p style=\"font-size: clamp(17px,2.2vw+9px,24px); font-weight: bold; margin: 0 0 12px 0; color: #f07c00;\">Deliver Big Bags. Skip the Packhouse.<\/p>\n<p style=\"margin: 0 0 8px 0; color: #ccc; font-size: clamp(13px,1.4vw+8px,15px);\">Tell us your tractor model, potato area, target supply chain (processor\/export\/cooperative), and buyer grade specification \u2014 we will confirm the separator threshold setting, tractor compatibility, and delivery timeline within one business day.<\/p>\n<p style=\"margin: 0 0 22px 0; color: #999; font-size: clamp(12px,1.2vw+7px,13px);\">Considering the complete Watanabe potato system from stone clearance through to big bag delivery? Ask about a full matched package \u2014 all seven steps configured and coordinated for your specific farm and supply chain.<\/p>\n<p><a style=\"display: inline-block; background: #f07c00; color: #fff; padding: 13px 38px; border-radius: 4px; text-decoration: none; font-weight: bold; font-size: clamp(13px,1.4vw+8px,15px); letter-spacing: .02em;\" href=\"https:\/\/rock-crusher-tractor.com\/es\/contact-us\/\">Cont\u00e1ctanos ahora<\/a><\/p>\n<\/div>\n<\/div>\n<p><!-- END PAGE: EP-CWB-2L Potato Harvest Big Bag --><\/p>","protected":false},"excerpt":{"rendered":"<p>&nbsp;<\/p>\n<div style=\"background: linear-gradient(135deg,#1e1e1e 0%,#2d2d2d 100%); color: #f5f5f5; padding: 22px 24px; border-radius: 5px; border-left: 5px solid #f07c00; font-family: Georgia,'Times New Roman',serif; font-size: clamp(14px,1.8vw+8px,16px); line-height: 1.8; word-break: break-word; overflow-wrap: break-word; box-sizing: border-box;\">\n<p style=\"margin: 0 0 10px 0;\">Harvests, sorts, and fills <strong style=\"color: #f07c00;\">700 Kg big bags<\/strong> directly in the field \u2014 the EP-CWB-2L replaces harvesting, windrow collection, transport, sorting, and bagging with a single tractor pass. Small and large potatoes separated automatically.<\/p>\n<p style=\"margin: 0;\">16-stage processing line, <strong style=\"color: #f07c00;\">100 HP<\/strong>, 540 RPM, 2\u20135 km\/h. Operator picking station included. The complete field-to-bag solution for commercial supply chains.<\/p>\n<\/div>","protected":false},"featured_media":448,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[26],"product_tag":[],"class_list":["post-430","product","type-product","status-publish","has-post-thumbnail","product_cat-potato-machinery","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/product\/430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/comments?post=430"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/media\/448"}],"wp:attachment":[{"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/media?parent=430"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/product_brand?post=430"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/product_cat?post=430"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/es\/wp-json\/wp\/v2\/product_tag?post=430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}