PSW-3200 Rotavator – Enxada rotativa robusta para trator com largura de trabalho de 3,0 a 3,6 m
Heavy-duty tractor-mounted rotary tiller with 3.0–3.6 m adjustable working width at 140 HP minimum. Creates the fine, aerated seedbed that potato ridges, vegetable beds, and paddy cultivation require. Model B adds a 2,000 Kg integrated fertilizer bunker for combined till-and-fertilize in one pass.
Three variants: Standard · A (extended frame) · B (with fertilizer bunker). 540/1000 RPM PTO. Cat. 2 hitch.
Primary Tillage for Korean Potato, Vegetable, and Paddy Production
The PSW-3200 is a heavy-duty tractor-mounted rotary tiller operating on the rear Category 2 three-point hitch (Category 3 optional) at 140 HP minimum. Working width is adjustable across four settings from 3.0 to 3.6 meters, selectable at setup time. Both 540 RPM and 1000 RPM PTO are compatible. At 3–5 km/h working speed, it prepares the primary seedbed for potato ridge formation, vegetable beds, paddy cultivation, and post-clearing soil preparation.
The PSW-3200 is the Step 2 machine in the Watanabe potato machinery system — positioned after stone clearance and before the potato furrower, fertilizer applicator, and planter. It produces the loose, aerated, uniform soil structure that potato ridge formation and mechanical planting require. Three variants address different operational needs: the Standard model for dedicated tillage, the A model for better balance at wider width settings, and the B model with an integrated 2,000 Kg fertilizer bunker for combined tillage-and-fertilizer application in one pass.
The typical three-step land preparation sequence for Korean highland potato fields: stone clearance (Ancinho de rocha EP-EW-4000 for lighter loads, or coletor de rochas CT-2100 after crushing for complete removal) → PSW-3200 primary tillage → potato furrower and planting sequence.
Three Variants — Which PSW-3200 Is Right for You
PSW-3200 Standard
Dedicated tillage without additional attachments. Shortest frame (1,880 mm length) and lightest weight (1,650 Kg). Best for smaller Korean farms where maximum simplicity and ease of transport are the priority. 140 HP minimum. No fertilizer bunker. Choose this when dedicated primary tillage is the only requirement.
Best for: farms under 30 ha, simple tillage requirement
PSW-3200 A
Extended frame (2,300 mm length, 1,665 Kg) provides better lateral stability at the wider 3.4–3.6 m working width settings. On cross-slope paddies and terraced highland fields where the machine works across uneven terrain, the A model's longer frame reduces the balance imbalance that the shorter Standard frame experiences at maximum width. No fertilizer bunker. Same 140 HP minimum.
Best for: mid-size farms regularly using 3.4–3.6 m width, sloped terrain
PSW-3200 B — With Fertilizer Bunker
Extended frame (2,300 mm, 1,800 Kg) plus an integrated 2,000 Kg granular fertilizer bunker. Delivers base fertilizer application simultaneously with primary tillage — combining two separate field operations into one pass. 2 hydraulic control valves required. 160+ HP recommended at full bunker load. The fertilizer delivery rate is adjustable for different crop and soil nutrition programs.
Best for: large commercial farms prioritising minimal field passes
Technical Specifications — PSW-3200 All Three Variants
Todos os dados foram retirados do folheto oficial do produto Watanabe.
| DADOS TÉCNICOS | Padrão | UM | B (+ Fertilizer) |
|---|---|---|---|
| Comprimento (mm) | 1,880 | 2,300 | 2,300 |
| Altura (mm) | 1,350 | 2,530 | 2,530 |
| Weight (Kg) | 1,650 | 1,665 | 1,800 |
| Working width options | 3.0/3.2/3.4/3.6 m | 3.0/3.2/3.4/3.6 m | 3.0/3.2/3.4/3.6 m |
| Potência mínima do trator | 140 HP | 140 HP | 140 HP (160+ rec.) |
| velocidade da tomada de força | 540 / 1000 RPM | 540 / 1000 RPM | 540 / 1000 RPM |
| Categoria de vínculo | 2 (Cat. 3 opcional) | 2 (Cat. 3 opcional) | 2 (Cat. 3 opcional) |
| silo de fertilizantes | — | — | 2.000 kg |
| Válvulas hidráulicas necessárias | — | — | 2 |
| Velocidade de trabalho | 3–5 km/h | 3–5 km/h | 3–5 km/h |
ⓘ All specifications from the Watanabe official product brochure. Working width is set at machine setup — not adjustable from the tractor cab during operation. HP = horsepower. Cat. 3 hitch option available on all variants.
Aplicações na Coreia
Potato Seedbed Preparation — Gangwon-do Highland Production
The PSW-3200 is Step 2 in the Watanabe potato machinery system for Korean highland potato production — operating after surface stone clearance and before the furrower and planter. In Pyeongchang-gun, Hoengseong-gun, and Inje-gun, the short spring planting window means the preparation sequence from stone clearance through to planting must proceed efficiently and in the correct order. The PSW-3200 at 1000 RPM PTO produces the fine, aerated soil structure that potato ridge formation requires — the furrower (Step 3) shapes consistent ridges in properly tilled soil more accurately than in partially tilled or clod-heavy soil.
Row count note: Set the PSW-3200 working width to accommodate the total planted width of your intended row count — 3.0 m for 3 rows at 75 cm spacing (plus working margins), 3.6 m for 4 rows at wider spacing. The PSW-3200 working width must be consistent with the furrower and planter row count you intend to use.
Vegetable Bed Preparation — Cabbage, Garlic, Onion
For cabbage, garlic, and onion production in South Jeolla (Haenam-gun) and South Chungcheong (Seosan), the PSW-3200 creates the level, fine-tilth beds required before transplanting machinery and direct seeding equipment. Crop residue from the previous rotation is incorporated completely in a single pass, eliminating a separate residue management step.
Paddy Field Preparation — Mountain Paddies
Mountain paddy soil in Gangwon-do and the terraced paddies of South Gyeongsang requires heavy-load tillage beyond the capability of smaller rotary tillers. The PSW-3200 at 140 HP handles full-depth tillage in waterlogged paddy conditions. The A model's extended frame provides better balance on the cross-slope terraced paddies typical of Korean mountain rice cultivation where shorter-frame tillers can become unstable.
Post-Stone-Clearance Seedbed Finishing
After stone clearance operations — Triturador de pedra THOR 2.4 and CT-2100 rock picker — the PSW-3200 completes the standard three-step land preparation sequence with primary tillage. It incorporates any remaining surface material and creates the cultivation profile the first crop season requires. This is the most common PSW-3200 workflow in Korea: stone clearance sequence → PSW-3200 tillage → crop planting.
PSW-3200 in the Watanabe 7-Step Potato Production System
The PSW-3200 is Step 2 in the Watanabe complete potato machinery system. Understanding its position in the full sequence — and how the working width of the PSW-3200 must align with every subsequent machine in the system — is essential for building a correctly coordinated potato production setup.
Surface Stone Clearance — EP-EW-4000 Rock Rake (75 HP, 3.6 m) windrows surface stones. Or THOR rock crusher + CT-2100 rock picker for complete stone removal on heavier stone fields.
Primary Tillage — PSW-3200 Rotavator (this machine) — Creates the fine, aerated seedbed that potato ridge formation requires. Working width is set here and must be maintained through Steps 3–7.
Furrow Opening — EP-R-380 (3-row) or EP-R-580 (5-row) potato furrower at 75 HP. Row count and spacing must match PSW-3200 working width set at Step 2.
Base Fertilizer Application — EP-ADB-380 (3-row) or EP-ADB-480 (4-row) in-furrow applicator at 75 HP. Combined with Step 2 if using PSW-3200 Model B (saves one field pass).
Planting — EP-PAI-2100 or EP-PANTHER potato planter (75–100 HP). Row count and spacing must match Steps 2–4.
Mid-Season Hilling — EP-ERA Rotary Cultivator (2100/3100/5100) for potato hill-up and inter-row top-dressing fertilization. Spring-loaded arms protect developing tubers.
Harvest — EP-AWB-1600 (2-row mounted) or EP-AWB-3200 (4-row trailed) potato digger, or EP-CWB-2L big bag harvester for direct processing supply. Harvester row spacing must match planted row spacing from Steps 2–5.
Watanabe — Mais de 50 anos de fabricação de máquinas agrícolas
PSW-3200 Manufacturing and Build Specification
The PSW-3200 rotor assembly carries the blades that do the actual tillage work — these blades are high-carbon steel, heat-treated for hardness and toughness, and arranged in a helical pattern across the working width to ensure smooth, continuous soil engagement rather than intermittent impact. The gearbox is a dedicated heavy-duty unit sized for the 140 HP maximum PTO input and the sustained load of tillage in dense clay or stone-fragment-bearing highland soils. All three variants (Standard, A, B) share the same rotor specification — the differences between variants are in frame length (Standard vs A/B), the presence of the fertilizer bunker (B only), and the associated hydraulic system components for the bunker metering drive.
Rotor Blade Specification and Working Performance
At 1000 RPM PTO, the rotor blade tips travel at high velocity through the soil profile, cutting, fracturing, and turning the soil to the working depth in a single pass. The 1000 RPM setting produces finer particle size and more complete residue incorporation than 540 RPM — this difference is significant for potato seedbed quality, where uniformly fine tilth allows the furrower shins to form consistent ridges and the planter to achieve uniform seed spacing and depth. The 540 RPM setting conserves fuel and reduces blade wear per hectare when fine tilth is not the priority — primary residue incorporation passes and paddy pre-tillage where coarser soil structure is acceptable before the final tillage pass.
Why the PSW-3200 Suits Korean Potato and Vegetable Production
Korean highland potato soils in Gangwon-do — particularly the granite-derived shallow soils of Pyeongchang-gun and Hoengseong-gun at 400–800 m altitude — are dense, rocky, and subject to winter freeze-thaw disturbance that leaves the surface profile inconsistent at the start of each growing season. The PSW-3200's 140 HP minimum specification and heavy-duty rotor handles these conditions at full working depth in a single pass, where lighter rotavators common in lowland vegetable production zones either skip depth or require multiple passes to achieve the same result. The adjustable 3.0–3.6 m working width allows the width to be matched to the specific row count and field geometry of each farm's potato production system.
Korea Local Stock and After-Sales Support
Korea Watanabe stocks the PSW-3200 series locally in Ansan-si, Gyeonggi-do — all three variants (Standard, A, B) are available for same-season delivery. Replacement rotor blades and gearbox oil are available domestically. For Model B fertilizer bunker components, spare metering parts are available on order from the Korea Watanabe inventory program.
Korean-language technical support covers variant selection guidance, working width configuration, PTO speed selection for the specific crop and soil type, maintenance scheduling, and wear part supply throughout the machine's service life. Warranty terms covering mechanical defects in the gearbox, rotor assembly, and main frame structure are confirmed at the time of purchase.
Perguntas frequentes
What is the difference between 540 RPM and 1000 RPM for the PSW-3200?
At 1000 RPM PTO, the rotor operates at higher blade tip speed for the same engine RPM — producing finer particle size and more complete residue incorporation at equivalent forward speed. The 1000 RPM setting is preferred for potato ridge formation and fine vegetable seedbeds where soil fineness is important. The 540 RPM setting is typically used for primary tillage passes where coarser particle size is acceptable and fuel efficiency is a priority. Use 1000 RPM for the final seedbed preparation pass before planting; 540 RPM is adequate for initial residue incorporation passes on heavy soils.
Can I adjust the working width from the tractor cab during operation?
No. The PSW-3200 working width is set by repositioning the outer blade sections during machine setup — before the working session begins. This is not a quick in-field adjustment; it is a setup decision made at the start. Most Korean operators select the working width to match their standard crop row spacing at the beginning of the season and leave it set. Confirm your required working width for the season before delivery so we can pre-configure it correctly.
Does the field need to be stone-cleared before using the PSW-3200?
For fields with significant surface stone above approximately 15 cm diameter, stone clearance before the PSW-3200 pass is strongly recommended. Large stones cause rotor blade damage, increase vibration loading on the gearbox, and produce uneven tillage in stone zones. The correct sequence is: stone clearance (THOR rock crusher and/or CT-2100 rock picker) → PSW-3200 tillage. On fields where prior THOR crushing has already reduced stones to fragments below 5 cm, the PSW-3200 can typically work through the remaining fine material without significant blade damage — but this depends on fragment density and size. When in doubt, complete the stone clearance step first.
What is the PSW-3200 B fertilizer bunker system?
The PSW-3200 B includes a 2,000 Kg capacity bunker that meters and delivers granular fertilizer into the soil during the tillage pass. This combines primary tillage and base fertilizer incorporation in one field pass, eliminating a separate pre-tillage or post-tillage fertilizer application run. Compatible with standard Korean granular compound fertilizers (복합비료). The bunker metering rate is adjustable. Requires 2 hydraulic control valves. At 1,800 Kg implement weight plus 2,000 Kg fertilizer load, 160+ HP is recommended for fully loaded operation — 140 HP at the minimum specification is marginal with a full bunker on heavy highland soil.
What tractor models are compatible?
The PSW-3200 requires 140 HP minimum (160+ HP recommended for Model B with full bunker), 540 or 1000 RPM rear PTO, and Category 2 three-point hitch (Category 3 option available). Compatible models include: Daedong (대동) upper-range models (140 HP+); LS upper models; TYM 140 HP+ series; John Deere 7R 200–230; New Holland T7.210–T7.270; Fendt 700 Vario series. Confirm your specific tractor model and PTO speed availability when contacting us — we verify compatibility before any order.
Can the PSW-3200 work on slopes for Korean highland farms?
The PSW-3200 is designed for the hilly and mountainous terrain common in Korean agriculture. For slopes up to approximately 15–18%, the PSW-3200 performs reliably with standard tractor ballasting. Above 18%, ensure the tractor is adequately front-ballasted — the rotor draft on steeper slopes can cause front wheel lift on underballasted tractors. The PSW-3200 A model's extended frame provides better balance on cross-slope paddies and terraced fields compared to the shorter Standard frame. For slopes above 25%, consult us about appropriate tractor ballasting and operational speed for your specific field conditions.
How does the PSW-3200 fit in the Watanabe 7-step potato system?
The PSW-3200 is Step 2 in the Watanabe potato production sequence: (1) Stone clearance — EP-EW-4000 Rock Rake or THOR + CT-2100; (2) Primary tillage — PSW-3200 (this machine); (3) Furrow opening — EP-R-380/R-580; (4) Base fertilization — EP-ADB-380/ADB-480 (or combined with Step 2 if using PSW-3200 B); (5) Planting — EP-PAI-2100 / EP-PANTHER; (6) Mid-season hilling — EP-ERA Rotary Cultivator; (7) Harvest — EP-AWB-1600 Potato Digger. The PSW-3200 working width must be set to match the row count of the furrower and planter in Steps 3 and 5 for the machines to work in aligned sequence throughout the season.
What routine maintenance does the PSW-3200 require?
Inspect rotor blades for wear or deformation every 50 hours — blades that have lost their cutting geometry increase fuel consumption before they visibly break. Check gearbox oil level every 50 hours; change per the manufacturer's schedule (typically annually or at 200 hours). Clean rotor and housing after each working day. For Model B: empty the fertilizer bunker completely after each use and clean the metering mechanism — granular fertilizer residue absorbs moisture and can bridge or jam the delivery system if left unused for extended periods. Lubricate all grease points before each season and after extended field sessions.
Avaliações de clientes
Kim Yeong-su — Commercial Potato Farm (Atlantic variety, 20 ha), Pyeongchang-gun, Gangwon-do (2024)
★★★★★
"Running the PSW-3200 as Step 2 in the full Watanabe potato system — after the EP-EW-4000 spring stone rake, before the EP-R-380 furrower. The 3.2 m working width matches our 3-row furrower and planter configuration exactly. At 1000 RPM PTO, the seedbed quality is consistently fine enough that the furrower runs smoothly with consistent ridge geometry. Two seasons without any blade or gearbox issues."
Lee Bo-mi — Vegetable Farm (Cabbage, Radish, 18 ha), Namhae-gun, South Gyeongsang (spring 2025)
★★★★★
"Switched from a 2.8 m competitor rotavator to the PSW-3200 at 3.6 m width. The daily coverage difference is significant — we prepare the same 18 hectares of spring vegetable beds in about 35% less time. The Korea Watanabe team confirmed compatibility with our John Deere 7R 210 before purchase. The Standard model was the right choice for our operation."
Choi Ji-seok — Paddy Farm, Sangju, North Gyeongsang (2024)
★★★★★
"Mountain paddy soil in North Gyeongsang is heavy sticky clay — our previous 120 HP rotavator couldn't achieve full depth. The PSW-3200 at 140 HP handles it in one pass at 3.2 m width. Improved soil structure in the paddy after PSW-3200 tillage was visible in transplanting results — better root establishment and more uniform plant emergence. The A model's extended frame provides noticeably better stability on our cross-slope paddy sections."
Park Chan-woo — Agricultural Land Developer, South Chungcheong (2025)
★★★★★
"Standard sequence for our land development projects: THOR 3.0 crusher → CT-2100 rock picker → PSW-3200 B (with fertilizer bunker). The combined tillage + base fertilizer pass in one operation keeps our project timeline to the minimum field passes the developer's schedule allows. The 160+ HP recommendation for the B model with full bunker is accurate — we run a 185 HP tractor and it's the right power level."
Jeong Soo-jin — Garlic and Onion Farm (28 ha), Haenam-gun, South Jeolla (spring 2025)
★★★★★
"CT-2100 picks the stones in late winter, PSW-3200 prepares the planting beds in early spring before the transplanting window. At 3.6 m working width, about 4–4.5 hectares per productive day — fits our 28-hectare schedule with time to spare. Machine performs reliably in South Jeolla's heavy coastal clay soil. No blade failures in two seasons."
Yun Sang-cheol — Tillage Service Contractor, Wonju, Gangwon-do (2024–2025)
★★★★★
"Contract tillage service across the Wonju potato belt — about 80 hectares per spring. The PSW-3200 A at 3.6 m completes the volume in about 3 weeks including travel between client farms. The A model's frame balance at 3.6 m was why I chose it over the Standard — when you're running 8-hour days on highland terrain with cross-slope sections, the stability difference matters over a full season."
Tell Us Your Crop, Field Area, and Tractor — We Confirm the Right Variant
Crop type + annual area + tractor HP + slope conditions + whether fertilizer bunker is needed → specific PSW-3200 Standard / A / B recommendation in one business day. All variants in local stock at trator-de-pedras.com, Ansan-si, Gyeonggi-do.
