{"id":388,"date":"2026-05-20T06:23:04","date_gmt":"2026-05-20T06:23:04","guid":{"rendered":"https:\/\/rock-crusher-tractor.com\/?post_type=product&p=388"},"modified":"2026-05-20T06:54:41","modified_gmt":"2026-05-20T06:54:41","slug":"ep-ew-4000-rock-rake-3-6m-tractor-75hp","status":"publish","type":"product","link":"https:\/\/rock-crusher-tractor.com\/tr\/urun\/ep-ew-4000-rock-rake-3-6m-tractor-75hp\/","title":{"rendered":"EP-EW-4000 Rock Rake for Tractor \u2013 3.6 m, from 75 HP"},"content":{"rendered":"
\n

<\/p>\n

\n
\n
3.6 m<\/div>\n
Working Width<\/div>\n<\/div>\n
\n
75 HP<\/div>\n
Min. Power (T Version)<\/div>\n<\/div>\n
\n
2<\/div>\n
Drive Versions<\/div>\n<\/div>\n
\n
50+<\/div>\n
Years Watanabe Quality<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

The Rock Rake That Clears What Crushers Leave Behind<\/h2>\n

The Watanabe EP-EW-4000 rock rake for tractor<\/strong> is the implement you reach for before<\/em> rotavating, seeding, or replanting \u2014 the machine that removes surface stones from fields too rocky to work safely with conventional tillage tools. Unlike a rock crusher for tractor<\/a> that grinds embedded boulders into aggregate, the tractor rock rake<\/strong> targets stones at or near the soil surface, gathers them into a windrow at the field edge, and leaves the topsoil structure largely undisturbed for the next cultivation step.<\/p>\n

The EP-EW-4000 range offers two configurations \u2014 same 3.6-meter working width, different drive systems. Choosing between them is the one real decision most buyers need to make:<\/p>\n

\n
\n

\u25b6 EP-EW-4000 \u2014 Hydraulic Active<\/p>\n

Powered tine system driven by the tractor’s external hydraulic circuit. Requires 100 cv minimum<\/strong> and 60 L\/min oil flow. Best for heavier, clay-type soils and high-density stone concentrations.<\/p>\n<\/div>\n

\n

\u25b6 EP-EW-4000 T \u2014 Tractor Drive (No Hydraulics)<\/p>\n

Category 2 three-point hitch only \u2014 no external hydraulic supply needed. Starts at 75 cv<\/strong>. Ideal for smaller Korean farm tractors (LS, Daedong, TYM 65\u201385 HP range) working loamy or volcanic soils.<\/p>\n<\/div>\n<\/div>\n

Watanabe has manufactured agricultural machinery since 1970. The EP-EW-4000 series is part of a product range built for the conditions real producers deal with every season \u2014 uneven Korean terrain, variable stone density from Jeju volcanic basalt to Gangwon granite hillside plots, and tractors that range from compact family-farm models to large commercial machines. Anywhere that surface stones are the obstacle rather than the target, a professional field rock rake<\/strong> at 3\u20135 km\/h is the right first step before any other implement follows.<\/p>\n

\"Roke\u00a0<\/p>\n

\n

Technical Specifications \u2013 EP-EW-4000 & EP-EW-4000 T<\/h2>\n

The table below covers both versions in full. The single most important row for purchasing decisions is Oil Flow<\/strong> \u2014 the EP-EW-4000 requires 60 L\/min from the tractor’s external hydraulic remote circuit; the EP-EW-4000 T leaves that row blank, needing nothing beyond a standard Cat. 2 rear hitch. All data is sourced directly from the Watanabe official product brochure.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
TEKN\u0130K VER\u0130LER<\/th>\nEP-EW-4000<\/th>\nEP-EW-4000 T<\/th>\n<\/tr>\n<\/thead>\n
Dimensions<\/td>\n<\/tr>\n
Uzunluk (mm)<\/td>\n4550<\/td>\n4550<\/td>\n<\/tr>\n
Width \u2013 transport (mm)<\/td>\n2400<\/td>\n2400<\/td>\n<\/tr>\n
Y\u00fckseklik (mm)<\/td>\n1380<\/td>\n1960<\/td>\n<\/tr>\n
A\u011f\u0131rl\u0131k<\/td>\n1800 Kg<\/td>\n1900 Kg<\/td>\n<\/tr>\n
Bottom Linkage Category<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Working Width<\/strong><\/td>\n3.6 m<\/strong><\/td>\n3.6 m<\/strong><\/td>\n<\/tr>\n
Tractor Requirements<\/td>\n<\/tr>\n
Engine Power (min.)<\/strong><\/td>\n100 cv<\/strong><\/td>\n75 cv<\/strong><\/td>\n<\/tr>\n
Oil Flow (min.)<\/strong><\/td>\n60 L\/min.<\/strong><\/td>\n\u2014<\/td>\n<\/tr>\n
Working Speed<\/td>\n3\u20135 Km\/h<\/td>\n3\u20135 Km\/h<\/td>\n<\/tr>\n
Required Control Valves<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u24d8 cv = metric horsepower (PS). 100 cv \u2248 98.6 HP; 75 cv \u2248 73.9 HP. All data sourced from the official Watanabe product brochure.<\/p>\n

Note on transport vs working width:<\/strong> The 3.6 m working width is the actual stone-clearing path. Transport width is 2,400 mm \u2014 tines fold to this dimension when the hitch is raised. The 580 mm height difference between versions (1,380 mm vs 1,960 mm) is also worth checking against shed clearances before ordering.<\/p>\n<\/div>\n

<\/p>\n

\n

How the EP-EW-4000 Rock Rake Works<\/h2>\n

The Raking Mechanism<\/h3>\n

The EP-EW-4000 uses a row of hardened steel tines arranged across the full 3.6-meter working width. As the tractor advances at 3\u20135 km\/h, the tines penetrate the upper soil layer at a forward-curving angle designed to lift<\/em> stones rather than push them deeper. Stones caught on the tine bodies travel along the implement frame and accumulate into a growing windrow ahead of the machine. Smaller particles and loose soil fall back through the tine gaps, leaving the seedbed profile largely undisturbed below \u2014 a key difference from blade-clearing or bucket scraping, which disturbs the entire surface horizon.<\/p>\n

Stone Collection and Windrow Formation<\/h3>\n

Collected stones build into a windrow that the tractor pushes steadily across the field. When the operator reaches the field edge \u2014 or a chosen drop-off point \u2014 raising the three-point hitch releases the accumulated load in a controlled pile. Windrow placement is entirely at the operator’s discretion: full-perimeter collection, centre-row drops for later loader pickup, or a combination. A productive operator can clear a 1-hectare rectangular field in roughly two to three hours depending on stone density and working speed.<\/p>\n

After raking, the windrow can be left for manual loading, picked up with a front-end loader, or handled efficiently with a purpose-built rock picker<\/a> for zero manual stone contact during the entire clearance operation.<\/p>\n

\"Roke<\/p>\n

EP-EW-4000 Hydraulic vs EP-EW-4000 T \u2014 Functional Difference<\/h3>\n

The EP-EW-4000 has an active hydraulically driven tine system. The powered tine mechanism engages stones more aggressively in compacted or clay-heavy ground, and the operator can adjust tine working pressure via the tractor’s remote hydraulic valve during operation \u2014 useful when soil conditions shift across the field, as they often do on Korean hillside plots with mixed soil horizons.<\/p>\n

The EP-EW-4000 T operates purely through the three-point hitch: tines are fixed in working position, and stone engagement depends on implement weight, forward speed, and hitch depth setting. On loamy, sandy, or volcanic-origin soils \u2014 the type common on Jeju and many Gyeonggi alluvial plains \u2014 the T version captures stones just as reliably as the hydraulic model. The trade-off only becomes apparent in heavy, sticky clay where the active drive’s additional force makes a meaningful difference in per-pass capture rate.<\/p>\n<\/div>\n

<\/p>\n

\n

Why Korean Farmers Choose the EP-EW-4000 Rock Rake<\/h2>\n

\"Roke<\/p>\n

\n
\n

\u25a0 3.6 m One-Pass Coverage<\/p>\n

A full 3.6-meter strip cleared per pass means fewer headland turns and faster field coverage. At 5 km\/h the EP-EW-4000 can cover upwards of 1.5 hectares per hour under good conditions \u2014 genuinely meaningful throughput for medium and large holdings.<\/p>\n<\/div>\n

\n

\u25a0 Two Drive Options, One Width<\/p>\n

Hydraulic active drive or passive tine \u2014 choose what your tractor already delivers, not what requires a retrofit. Same 3.6-meter clearing path, same Category 2 hitch, different drive configurations to match real-world tractor populations on Korean farms.<\/p>\n<\/div>\n

\n

\u25a0 Starts from 75 HP<\/p>\n

The EP-EW-4000 T’s 75 cv threshold puts a professional-grade land clearing rake<\/strong> within reach of the compact and mid-range tractors common on Korean family holdings \u2014 no need to hire a larger machine or upgrade just to run one seasonal implement.<\/p>\n<\/div>\n

\n

\u25a0 Topsoil Structure Preserved<\/p>\n

Tines engage the surface layer to collect stones while fine soil particles fall back through the gaps. The seedbed below stays intact \u2014 critical when the rock-raking pass directly precedes a rotavating or direct-seeding operation scheduled the same week.<\/p>\n<\/div>\n

\n

\u25a0 Category 2 \u2014 Universal Fit<\/p>\n

Category 2 rear three-point hitch is the standard across virtually all tractors 60 HP and above manufactured after 1990. No proprietary coupling, no brand-specific adapter required. Mount it, set depth, work \u2014 same process as any standard rear implement.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Typical Application Scenarios for the Tractor Rock Rake<\/h2>\n

\"Roke<\/p>\n

\ud83c\udf3f Rocky Farmland Preparation Before Planting<\/h3>\n

This is the core use case. Fields previously used as rough pasture, scrub land, or long-fallow plots often carry a high density of surface stones \u2014 pushed up by frost heave over winter, brought to the surface by earlier cultivation, or simply always there waiting to be found by the first seeder that crosses the field. A single rock rake<\/strong> pass before primary tillage removes the bulk of this load. The rotavator or disc that follows works cleanly through a cleared profile: less implement wear, more uniform tillage depth, and a seedbed without buried rocks creating dry spots and germination gaps.<\/p>\n

In practice, Korean farmers who add a rock-raking pass before planting consistently report fewer broken seeder teeth per season. In many cases, one season’s avoided repair cost covers a significant portion of the implement’s purchase price.<\/p>\n

\ud83c\udf33 Orchard Row Renovation and Replanting<\/h3>\n

Old orchard conversion is a growing application across Chungbuk, North Gyeongsang, and Jeju. When aging apple, pear, or persimmon trees are removed, the land needs remediation before new rootstock can go in. Removed trees leave root zones with fractured rock, soil disturbance, and debris that creates a hazardous environment for any transplanter or seeder sent in immediately afterward.<\/p>\n

The EP-EW-4000’s 3.6-meter working width clears standard orchard row spacing in two passes. Tines collect dislodged stones without going deep enough to disturb the soil structure that decades of root activity have built. For orchards with rows of 4 meters or tighter, the EP-EW-4000 T’s 1,380 mm transport height and lighter weight reduce the risk of contact with any remaining orchard infrastructure.<\/p>\n

\ud83c\udf3b Pasture Renovation and Reseeding Prep<\/h3>\n

Paddocks being converted from grazing to improved grass production, or renovated for hay species, face a surface stone problem that a conventional mower or roller cannot address. Stones harmless to grazing animals will destroy a precision disc seeder. Raking before reseeding clears the hazard and leaves a windrow at the field edge easily handled with a front bucket once seeding is done.<\/p>\n

Many Korean beef and dairy farms in Gyeonggi-do and Gangwon-do have added a hydraulic rock rake<\/strong> specifically for this annual task. The cost of one avoided seeder repair typically justifies several years of seasonal operating costs for the implement.<\/p>\n

\ud83c\udfd7 Land Development and Site Preparation<\/h3>\n

Land developers and infrastructure contractors working on smaller parcels regularly need surface stone removal before earthworks begin. A bulldozer clears vegetation efficiently, but pushing surface stones into the subsoil creates long-term compaction and stability issues. A tractor-mounted field rock rake<\/strong> removes the stones without disturbing the underlying grade \u2014 keeping the cleared surface workable for the next machinery stage without soil structure loss. The EP-EW-4000 T’s 75 cv threshold is a practical asset here, since site preparation contractors typically work with mid-range agricultural tractors rather than large earthmoving equipment on smaller parcels.<\/p>\n

\"EP-EW-4000<\/p>\n<\/div>\n

<\/p>\n

\n

EP-EW-4000 or EP-EW-4000 T \u2014 How to Choose<\/h2>\n

Both models cover the same 3.6-meter working width and mount on the same Category 2 hitch. The decision comes down to three factors: your tractor’s hydraulic output, the soil texture you work, and how much active control you need while operating. The comparison below maps those factors to each version:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Selection Factor<\/th>\nEP-EW-4000 (Hydraulic)<\/th>\nEP-EW-4000 T (Passive)<\/th>\n<\/tr>\n<\/thead>\n
External hydraulic supply<\/td>\nRequired (60 L\/min)<\/td>\nNot required<\/td>\n<\/tr>\n
Minimum engine power<\/td>\n100 cv<\/td>\n75 cv<\/td>\n<\/tr>\n
Suited soil type<\/td>\nClay-heavy, compacted<\/td>\nLoamy, sandy, volcanic<\/td>\n<\/tr>\n
Stone embedment depth<\/td>\nPartially embedded<\/td>\nMainly surface-lying<\/td>\n<\/tr>\n
Transport height<\/td>\n1380 mm<\/td>\n1960 mm<\/td>\n<\/tr>\n
Operator control preference<\/td>\nAdjustable on the move<\/td>\nSimple, fewer connections<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The simplest pre-purchase check: inspect the rear of your tractor for remote hydraulic couplers. If it has at least two free remote ports and the pump delivers 60 L\/min or above at rated revs, the EP-EW-4000 is compatible. If the tractor has no remote ports at all \u2014 or only one \u2014 the EP-EW-4000 T is the straightforward choice.<\/p>\n

Korean tractor models commonly paired with the EP-EW-4000 T<\/strong> include:<\/p>\n