{"id":582,"date":"2026-05-25T07:51:55","date_gmt":"2026-05-25T07:51:55","guid":{"rendered":"https:\/\/rock-crusher-tractor.com\/?p=582"},"modified":"2026-05-25T07:51:55","modified_gmt":"2026-05-25T07:51:55","slug":"ct-2100-rock-picker-complete-guide-korea","status":"publish","type":"post","link":"https:\/\/rock-crusher-tractor.com\/nl\/ct-2100-rock-picker-complete-guide-korea\/","title":{"rendered":"CT-2100 Rock Picker \u2014 The Complete Professional Guide for Korea"},"content":{"rendered":"
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CT-2100 Rock Picker \u2014 The Complete Professional Guide for Korean Farm Operations<\/h1>\n

110 HP, 2.5 m\u00b3 hydraulic bunker, up to 80 Kg per stone. The machine that converts a stone-crushed field into a zero-stone seedbed \u2014 how it works, who needs it, and the one specification limit every buyer must understand before ordering.<\/p>\n

Get a CT-2100 Recommendation for Your Field<\/a><\/p>\n<\/div>\n<\/div>\n

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The CT-2100 rock picker is the machine that finishes what the stone crusher starts. Where the THOR stone crusher shatters embedded boulders and leaves crushed aggregate on the field surface, the CT-2100 lifts every collectable stone fragment \u2014 from 5 cm diameter up to 80 Kg individual weight \u2014 and loads it into a 2.5 m\u00b3 hydraulic-tip bunker for truck discharge. After a CT-2100 pick, the field surface is physically free of all stone material above the collection threshold. No other single machine in the Watanabe range achieves this result.<\/p>\n

In Korean highland potato, ginseng, and vegetable production, this zero-stone seedbed standard is not optional \u2014 it is the agronomic foundation that mechanical planting, mid-season cultivation, and mechanical harvest all depend on. This guide explains the CT-2100 in detail: confirmed specifications, how the picking mechanism works, the critical 80 Kg weight limit and what it means operationally, how it integrates with the THOR stone crusher and EP-EW-4000 rock rake in the complete clearance system, and which Korean farm operations genuinely benefit from it.<\/p>\n

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CT-2100 Rock Picker \u2014 Confirmed Specifications<\/h2>\n

\"CT-2100<\/p>\n

Alle specificaties zijn afkomstig uit de offici\u00eble productbrochure van Watanabe.<\/p>\n

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\n
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110 HP<\/span><\/div>\n
Min. tractorvermogen<\/div>\n<\/div>\n
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1.95 M<\/span><\/div>\n
Werkbreedte<\/div>\n<\/div>\n
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2.5 m\u00b3<\/span><\/div>\n
Hydraulic bunker<\/div>\n<\/div>\n
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80 Kg<\/span><\/div>\n
Max. stone weight \u26a0<\/div>\n<\/div>\n
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3\u20135 km\/u<\/span><\/div>\n
Werksnelheid<\/div>\n<\/div>\n
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2 valves<\/span><\/div>\n
Hydraulic remotes req.<\/div>\n<\/div>\n
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60 L\/min<\/span><\/div>\n
Minimale hydraulische doorstroming<\/div>\n<\/div>\n
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Cat.2<\/div>\n
Three-point linkage<\/div>\n<\/div>\n<\/div>\n
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\u26a0 Two hydraulic remote valves required<\/p>\n

The CT-2100 requires two rear hydraulic remote valve outlets \u2014 one for the tine drive motor and one for the hydraulic bunker tip function. This is a firm technical requirement: a tractor with only one rear remote valve cannot operate the CT-2100 correctly. Verify your tractor’s rear remote valve count in the specification documentation before ordering. Most Korean tractors above 100 HP have 3\u20134 rear remote valve outlets; compact tractors in the 80\u2013100 HP range may have only 1\u20132.<\/p>\n<\/div>\n

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How the CT-2100 Works \u2014 The Picking Mechanism Explained<\/h2>\n

\"CT-2100<\/p>\n

The CT-2100 uses a rotating picking rotor \u2014 a drum fitted with carbide-tipped picking tines \u2014 that rotates as the tractor advances across the field. The rotor’s tines penetrate the upper 5\u201310 cm of the field surface as they rotate, catching stones in the size range from approximately 5 cm diameter upward. The rotational motion carries caught stones upward and rearward, where they are discharged into the hydraulic bunker mounted above and behind the rotor assembly.<\/p>\n

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1<\/div>\n
Tine penetration and stone capture:<\/strong> As the rotor rotates, each tine passes through the surface soil layer. Stones above the tine gap width are caught between adjacent tines on the rotor. Soil and fine material passes through the tine gaps and returns to the field. This is the separation stage \u2014 stones are mechanically separated from the fine soil fraction without crushing either.<\/div>\n<\/div>\n
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2<\/div>\n
Conveyor transfer to bunker:<\/strong> Captured stones ride the rotating tines upward and are transferred by the rotor’s rotational energy into the conveyor or direct discharge path leading to the hydraulic bunker. The conveyor elevation carries stones above the tractor chassis and deposits them into the bunker from above \u2014 allowing the 2.5 m\u00b3 bunker to fill efficiently without blocking the rotor’s picking action.<\/div>\n<\/div>\n
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3<\/div>\n
Rubber shield \u2014 safety and soil quality:<\/strong> A full-width rubber curtain covers the rear of the rotor picking zone, preventing stones from being thrown rearward at high velocity and preventing injury to workers, livestock, or structures near the machine. The shield also reduces the amount of loose soil entrained into the bunker with the stones \u2014 keeping the collected material more stone-pure and less soil-laden.<\/div>\n<\/div>\n
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4<\/div>\n
Hydraulic bunker tip discharge:<\/strong> When the bunker reaches capacity (approximately 4\u20135 tonnes of collected granite depending on stone density), the operator activates the hydraulic tip function from the tractor cab. The bunker rotates rearward and upward, discharging its load into a truck positioned behind the machine at the field headland. Discharge takes approximately 30\u201360 seconds; the operator then lowers the empty bunker and resumes the picking pass without dismounting.<\/div>\n<\/div>\n<\/div>\n

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The 80 Kg Weight Limit \u2014 Understanding Its Operational Implications<\/h2>\n
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Critical Specification: 80 Kg Maximum Stone Weight<\/p>\n

The CT-2100 picks stones safely up to 80 Kg per individual stone. Stones above 80 Kg cause tine deflection, picking failure, and in severe cases, tine damage from the attempted force. On Korean highland fields with large embedded granite boulders \u2014 common in Gangwon-do and South Chungcheong ginseng zones \u2014 stones above 80 Kg must be pre-processed by a stone crusher before the CT-2100 can collect them. This limit is the primary reason the THOR 2.4 stone crusher is required before the CT-2100 on heavy-stone fields.<\/p>\n<\/div>\n

What 80 Kg Looks Like in Korean Highland Rock<\/h3>\n

80 Kg of granite represents a stone of approximately 25\u201330 cm maximum dimension, assuming compact granitic shape. This reference helps Korean operators assess their field conditions against the CT-2100’s operating limit:<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Stone size \/ type<\/th>\nApproximate weight<\/th>\nCT-2100 handles?<\/th>\n<\/tr>\n<\/thead>\n
Annual frost-heave surface stones (5\u201315 cm)<\/td>\n0.5\u20135 Kg<\/td>\n\u2705 Easily<\/td>\n<\/tr>\n
Medium surface granite (15\u201325 cm)<\/td>\n5\u201330 Kg<\/td>\n\u2705 Within limit<\/td>\n<\/tr>\n
Large surface granite (25\u201330 cm)<\/td>\n30\u201380 Kg<\/td>\n\u26a0 At the limit<\/td>\n<\/tr>\n
THOR-crushed fragments (up to 10\u201315 cm)<\/td>\n0.5\u201315 Kg<\/td>\n\u2705 Ideal range<\/td>\n<\/tr>\n
Large embedded boulder (30\u201360 cm+)<\/td>\n80\u2013500+ Kg<\/td>\n\u274c Requires THOR first<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

This table shows why the CT-2100 following a THOR stone crusher pass is such an effective system: the THOR 2.4 reduces all stones \u2014 including those well above 80 Kg \u2014 to fragments predominantly below 15 cm (and certainly below 80 Kg). The CT-2100 then collects every fragment the THOR left on the surface, completing the clearance. Each machine does what it is engineered for; neither can do the other’s job.<\/p>\n

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The Three-Tool System \u2014 How CT-2100 Fits With Rake and Crusher<\/h2>\n

\"THOR<\/p>\n

The CT-2100 operates in three different positions within the clearing sequence depending on the field’s stone density and the operation’s downstream requirements:<\/p>\n

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Configuration A<\/p>\n

EP-EW-4000 Rake<\/a> \u2192 CT-2100<\/p>\n

For light stone conditions \u2014 annual frost-heave on established fields, stones predominantly below 40\u201350 Kg. The rake windrows the surface stones; the CT-2100 picks from the windrows. No stone crusher needed. Operates at 75\u2013110 HP \u2014 standard farm tractor handles both. Most efficient annual maintenance combination for Gangwon-do potato and vegetable fields with small surface stone populations.<\/p>\n<\/div>\n

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Configuration B \u2605 Most Common<\/p>\n

THOR 2.4<\/a> \u2192 CT-2100<\/p>\n

For medium to heavy stone conditions \u2014 fields with embedded stones above 80 Kg present. The THOR crushes all stones (including large ones) to below the CT-2100’s 80 Kg pick limit. The CT-2100 then collects everything from 5 cm upward. This is the standard professional sequence for ginseng seedbed preparation, new orchard clearing, and highland potato production on granite-heavy soils.<\/p>\n<\/div>\n

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Configuration C<\/p>\n

Rake \u2192 THOR 2.4 \u2192 CT-2100<\/p>\n

Three-machine full system for very heavy and mixed stone fields. The rake pass identifies and windrows manageable surface stones and identifies heavy-stone zones for the THOR. The THOR processes the heavy zones. The CT-2100 collects the full field in a final pick pass. Slower and more resource-intensive \u2014 justified on new land conversion, Jeju basalt operations, and fields supplying zero-tolerance crops like certified ginseng.<\/p>\n<\/div>\n<\/div>\n

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CT-2100 Application by Korean Crop and Farm Type<\/h2>\n

\"CT-2100<\/p>\n

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\uc778\uc0bc<\/div>\n
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Ginseng \u2014 Mandatory (Zero Stone Standard)<\/p>\n

Ginseng root deformity from stone contact during 6-year development directly reduces grade at harvest. CT-2100 following THOR 2.4 is the professional standard in Geumsan-gun. The two-machine sequence delivers the stone-free seedbed profile that ginseng requires for Grade 1 production. No substitution for the CT-2100 in ginseng seedbed preparation \u2014 complete stone removal is non-negotiable for this crop.<\/p>\n<\/div>\n<\/div>\n

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\uac10\uc790<\/div>\n
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Highland Potato \u2014 Required for Processing Grade<\/p>\n

Residual stones cause mechanical harvester damage (EP-AWB-1600 share wear), tuber bruising from stone contact during the growing season, and harvest loss from share mismatch. On processing variety fields (Atlantic) where specific gravity and skin quality affect acceptance, stone-free seedbed condition produced by CT-2100 picking is important. On fresh market fields with annual frost-heave maintenance, CT-2100 following rake is the efficient annual combination.<\/p>\n<\/div>\n<\/div>\n

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\uacfc\uc218\uc6d0<\/div>\n
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Orchard \u2014 New Planting and Drip Irrigation<\/p>\n

For new orchard establishment where drip irrigation installation follows clearing, the CT-2100 removes the crushed aggregate left by the THOR from the planting rows \u2014 enabling clean drip line installation without stone interference. On established orchards with annual surface stone management, the CT-2100 following the rake handles annual maintenance without crusher deployment in lighter stone seasons.<\/p>\n<\/div>\n<\/div>\n

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\ucc44\uc18c<\/div>\n
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Precision Vegetables \u2014 Carrot, Onion, Garlic<\/p>\n

Carrot and daikon roots mechanically resemble ginseng in their stone sensitivity \u2014 stone contact produces bifurcated, deformed roots that reduce grade at fresh market or processing inspection. Garlic bulb surface damage from stone abrasion during the growing season reduces shelf life. The CT-2100 is essential for these crops on Korean highland granite soils where residual stone density is significant.<\/p>\n<\/div>\n<\/div>\n

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\uc784\ub3c4<\/div>\n
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NOT for Road Construction \u2014 THOR Crusher Only<\/p>\n

For farm road construction and rehabilitation applications, the stone crusher output (crushed aggregate) IS the road base \u2014 collecting and removing it with the CT-2100 would defeat the purpose. Road construction applications use the THOR stone crusher only; the CT-2100 is not deployed. The CT-2100 is an agricultural land clearance machine, not a road construction tool.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Operational Productivity \u2014 Coverage Rate and Truck Logistics<\/h2>\n

The CT-2100 operates at 3\u20135 km\/h working speed \u2014 significantly faster than the THOR stone crusher (0.5\u20132.5 km\/h). This speed difference has an important operational implication: on most Korean highland farm operations, the THOR crusher is the rate-limiting machine in the clearance sequence, not the CT-2100 picker<\/strong>. Planning the sequence around the THOR’s productive daily coverage avoids the common mistake of booking the CT-2100 and truck for a picking session before enough crushed area has been completed by the THOR.<\/p>\n

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Coverage Rate Reference: CT-2100 at 3\u20135 km\/h, 1.95 m working width<\/p>\n

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0.6<\/div>\n
ha\/hr at 3 km\/h<\/div>\n<\/div>\n
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1.0<\/div>\n
ha\/hr at 5 km\/h<\/div>\n<\/div>\n
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6\u201310<\/div>\n
ha\/productive day (8h)<\/div>\n<\/div>\n
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4\u20135 t<\/div>\n
granite per bunker fill<\/div>\n<\/div>\n<\/div>\n

Rates account for working passes only; bunker tip stops and headland turns reduce effective daily area. At granite density ~2.7 t\/m\u00b3 and 2.5 m\u00b3 bunker, each fill cycle carries approximately 4\u20135 tonnes. One truck per CT-2100 ensures continuous picking \u2014 the truck departs for dump site while CT-2100 continues; truck must return before the next bunker fills.<\/p>\n<\/div>\n

Truck Logistics \u2014 the CT-2100’s Hidden Productivity Variable<\/h3>\n

The CT-2100’s productive output is directly dependent on truck availability for bunker discharge. When the bunker fills and no truck is positioned at the field headland for discharge, the operator must stop the picking pass and wait \u2014 a direct productivity loss. On operations where truck round-trip time (field to dump site and return) is longer than the time to fill one bunker, a second truck rotating the route keeps the CT-2100 continuously productive.<\/p>\n

Calculate the required truck count: if the CT-2100 fills a bunker every 20\u201330 minutes of productive picking, and the dump site is 15 minutes each way from the field, a single truck can complete a round trip in 30\u201335 minutes \u2014 meaning the CT-2100 may be waiting 5\u201310 minutes per cycle. Two trucks overlapping the cycle eliminate the wait and maximise CT-2100 productive time. On remote Korean highland sites where the dump site is further, the calculation shifts more strongly toward two trucks.<\/p>\n

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Veelgestelde vragen<\/h2>\n
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\nCan the CT-2100 operate in wet soil conditions?<\/summary>\n

The CT-2100 operates better in moderately dry to moist soil conditions than in saturated wet soil. In very wet soil, two problems arise: soil adhesion to the picking tines reduces picking efficiency as soil-coated tines cannot engage stones cleanly; and the bunker fills rapidly with wet soil mixed with stones rather than stones alone, reducing the net stone weight per bunker cycle and increasing truck trips required. Picking in wet soil conditions is possible but should be avoided in favour of waiting for soil to drain to workable moisture levels. As a general guideline, if tractor tyres are sinking more than 8\u201310 cm with each pass, soil conditions are too wet for efficient CT-2100 operation.<\/p>\n<\/details>\n

\nDoes the CT-2100 disturb soil structure \u2014 is it safe to use on prepared seedbeds?<\/summary>\n

The CT-2100’s picking tines penetrate only the upper 5\u201310 cm of the soil surface \u2014 significantly shallower than the PSW-3200 rotavator’s 25\u201330 cm tillage depth. The CT-2100 pick pass after THOR crushing and before PSW-3200 rotavator tillage disturbs only the surface layer where crushed stone fragments lie. If the CT-2100 is used after the rotavator tillage pass (to collect any remaining small fragments), the surface disturbance from the CT-2100 is minor and easily incorporated by a light additional rotavator pass. In practice, most Korean ginseng and potato operations use the sequence: THOR crush \u2192 CT-2100 pick \u2192 PSW-3200 rotavator till, keeping the CT-2100 pick before the final tillage to minimise surface re-disturbance.<\/p>\n<\/details>\n

\nWhere does the collected stone go \u2014 is there a market for the picked granite?<\/summary>\n

Collected stone from Korean highland granite fields \u2014 particularly the THOR-crushed angular aggregate \u2014 has limited commercial aggregate value because it lacks the size uniformity and quality control of quarried crushed aggregate. Disposal options for Korean farmers: (1) field margin windrow deposition on the farm’s own boundary \u2014 common for smaller operations; (2) licensed construction waste aggregate disposal facility (\uac74\uc124\ud3d0\uae30\ubb3c \ucc98\ub9ac\uc5c5\uccb4) \u2014 required where stone volume is significant and on-farm disposal is not possible; (3) arrangement with local road contractors who accept field stone for access track construction \u2014 informal arrangements are common in highland agricultural communities; (4) for very small volumes, incorporation into on-farm drainage structures. Confirm disposal logistics and any relevant permit requirements with your county agricultural office before large-volume stone removal operations.<\/p>\n<\/details>\n

\nHow do I maintain the picking tine tips \u2014 what is the inspection and replacement protocol?<\/summary>\n

CT-2100 picking tines are carbide-tipped and subject to abrasive wear from rock contact. Inspection protocol: check all tine tips at the start of each operating season and after each multi-day heavy-stone session. Replace tines showing tip shortening (tip nose visibly shorter than a new tine), chipping or cracking of the carbide tip, or bent tine body. Tine replacement is significantly simpler than THOR tooth replacement \u2014 most CT-2100 tine configurations allow tool-only tine exchange without rotor removal. Korea Watanabe stocks CT-2100 replacement tine sets locally in Ansan-si, Gyeonggi-do, with next-day domestic dispatch during the operating season. On Jeju Island basalt operations, apply the same shortened inspection interval (60\u201380 hours vs 100 hours for mainland granite) that applies to THOR carbide teeth.<\/p>\n<\/details>\n

\nKomt de CT-2100 in aanmerking voor subsidies voor landbouwmachines in Korea?<\/summary>\n

The CT-2100 rock picker qualifies under the \ub3cc \uc218\uc9d1\uae30 (stone collector) or \ub18d\uc9c0 \uc815\ube44 \uae30\uacc4\ub958 (farmland improvement machinery) category in the Korean agricultural machinery purchase support program (\ub18d\uc5c5\uae30\uacc4 \uad6c\uc785 \uc9c0\uc6d0\uc0ac\uc5c5). This category has been included in recent program year eligible equipment lists. Confirm current year eligibility and subsidy rate with your regional agricultural technology center (\ub18d\uc5c5\uae30\uc220\uc13c\ud130) before purchase, and confirm that your operation meets the minimum cultivated area requirement for this category. Korea Watanabe provides complete technical specification documentation for the subsidy application process for the CT-2100.<\/p>\n<\/details>\n<\/div>\n

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Tell Us Your Field \u2014 We Confirm the Right CT-2100 Configuration<\/p>\n

Stone density (light \/ medium \/ heavy with typical largest stone size) + crop after clearance + tractor HP + rear hydraulic valve count \u2192 specific clearing sequence recommendation (rake-only, crusher+picker, or full three-machine), with CT-2100 integration confirmed. Korea local stock, Ansan-si, Gyeonggi-do.<\/p>\n

Neem nu contact met ons op<\/a><\/p>\n<\/div>\n

Redacteur: Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

CT-2100 Rock Picker \u2014 The Complete Professional Guide for Korean Farm Operations 110 HP, 2.5 m\u00b3 hydraulic bunker, up to 80 Kg per stone. The machine that converts a stone-crushed field into a zero-stone seedbed \u2014 how it works, who needs it, and the one specification limit every buyer must understand before ordering. Get a […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[31],"tags":[],"class_list":["post-582","post","type-post","status-publish","format-standard","hentry","category-application-and-technical-guid"],"_links":{"self":[{"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/posts\/582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/comments?post=582"}],"version-history":[{"count":2,"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/posts\/582\/revisions"}],"predecessor-version":[{"id":584,"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/posts\/582\/revisions\/584"}],"wp:attachment":[{"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/media?parent=582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/categories?post=582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rock-crusher-tractor.com\/nl\/wp-json\/wp\/v2\/tags?post=582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}