คราดหินแทรกเตอร์ AR รุ่น EW-4000
The EW-4000 AR Tractor Rock Rake is a high-efficiency, tractor-mounted implement designed for professional stone collection, surface cleaning, and debris removal across wide areas. With a 3.6 m working width, lightweight 1800–1900 kg construction, and low power requirement (100–140 hp tractors, 540 rpm PTO, 60 L/min hydraulic flow), it delivers aggressive yet precise raking performance at 3–5 km/h. Ideal for agriculture (field preparation, potato/vegetable land), construction (site cleaning, farm tracks), landscaping (sports fields, golf courses), and forestry applications, the EW-4000 AR creates clean windrows in a single pass, significantly reducing labour and preparing perfect surfaces for seeding or further works.
Technical Specifications
| ข้อมูลทางเทคนิค | EW-4000 |
|---|---|
| ขนาด | |
| ความยาว (มม.) | 4550 |
| ความกว้าง (มม.) | 2400 |
| ความสูง (มม.) | 1380 |
| น้ำหนัก | 1800 Kg |
| หมวดหมู่การเชื่อมโยงด้านล่าง | 2 |
| ความกว้างในการทำงาน | 3.6 m |
| ข้อกำหนดของรถแทรกเตอร์ | |
| กำลังเครื่องยนต์ (นาที) | 100 cv |
| Oil flow (min.) | 60 L/min. |
| ความเร็วในการทำงาน | 3 - 5 Km/h |
| วาล์วควบคุมที่จำเป็น | 2 |
Ideal Tractor Compatibility & Daily Use
The EW-4000 AR Tractor Rock Rake is specifically engineered for the most common medium-power tractor segment in Europe – 100 to 140 hp machines such as John Deere 5E/6M, New Holland T5, Case IH Farmall, Fendt 300 Vario, Massey Ferguson 5700, or Kubota M7, or Claas Axos. With a moderate weight of only 1800–1900 kg and excellent balance, the tractor rock rake places minimal load on the tractor’s rear axle while still delivering a full 3.6 m working width. Operators consistently report that even on 110–120 hp tractors the machine maintains perfect hydraulic response and forward speed in typical European soils, making it the go-to agricultural rock rake for contractors and farmers who want maximum coverage without needing a 200+ hp tractor.
How the EW-4000 AR Works & Why It Is Different
The tractor mounted rock rake uses two counter-rotating rotors with high-strength spring-steel tines that aggressively lift stones, roots, woody debris, and trash to the surface while allowing fine soil to fall back through. Hydraulic angle adjustment lets the operator control windrow width and aggressiveness from the cab. The result is clean, neat windrows that can be collected immediately or left for a second pass with a stone picker. Unlike simple drag rakes that merely push material, the EW-4000 actively lifts and separates, dramatically reducing the number of passes required and leaving a smoother surface ready for seeding or cultivation. This makes it one of the most efficient heavy duty rock rakes available in the 3–4 m class.
Primary Applications & Extended Uses
Core agricultural uses: surface cleaning after ploughing or stubble cultivation, stone collection before seeding, potato and vegetable land preparation, reclaiming pasture land, removing volcanic rocks or glacial stones. Construction & landscaping: site cleaning before topsoiling, sports field renovation, golf course maintenance, equestrian arena preparation, park and cemetery works. Forestry & land reclamation: clearing logging debris, preparing fire breaks, cleaning access roads. Municipal contracts: beach cleaning (sand mode), roadside verge maintenance, landfill surface preparation.
Case 1 – Vegetable Farm, Westland Glasshouse Region, Netherlands (2024)
160-ha vegetable grower replaced two older 3 m rakes with one EW-4000 AR on a 130 hp New Holland T5. Result: reduced cleaning time by 38 %, collected 40–60 tonnes of stones per hectare in one pass, and achieved cleaner fields before carrot planting. Soil tilth improved noticeably, leading to more uniform emergence and easier mechanical weeding.
Case 2 – Golf Course Renovation, Noord-Brabant, Netherlands (2024)
Course superintendent used the EW-4000 AR behind a 115 hp tractor to remove stones and roots after re-levelling tees and fairways. The hydraulic windrow adjustment allowed precise control – clean windrows collected in a single follow-up pass with a loader, saving three weeks of hand labour and €22,000 in external contractor costs.
Case 3 – Vineyard & Orchard Maintenance, Rheinhessen, Germany (2024)
Contractor working steep slopes used the tractor rock rake on a 125 hp Fendt 300 Vario. The machine removed slate fragments and old vine roots without disturbing the soil structure, leaving terraces perfectly clean for new planting. Client reported the cleanest surface they had seen in 20 years of renovations.
Case 4 – Airfield Grass Runway Maintenance, Oostende Area, Belgium (2024)
Airfield operator cleaned the grass runway and taxi areas after winter damage using the EW-4000 AR on a 120 hp Case IH Farmall. Removed hundreds of stones brought up by frost heave in two days – preventing potential propeller damage and extending the life of mowing equipment.
Build Quality & Wear Parts
The frame is heavy-duty box-section steel with reinforced mounting points. Rotors run in sealed oil-bath bearings with replaceable without dismantling the gearbox. Tines are individual bolt-on spring steel units – when worn, only the tip section is replaced, keeping running costs low. Hydraulic cylinders are double-acting with built-in depth control, and all hoses are protected by spiral guards. Units in Brazil regularly exceed 4000–5000 hours with proper maintenance – the same durability is now proven in European conditions.
Watanabe Netherlands Branch – Real European Stock & Support

Watanabe Netherlands Branch serves as the official European distribution and technical support centre for Watanabe Industry and Machine Trade Ltd., Brazil. We keep full machines and all wear parts in stock at our Dutch warehouse, perform CE-compliant preparation and testing on every unit, offer technical support in Dutch, English, French and German, and guarantee genuine spare parts delivery within 48–72 hours to most EU countries. When you buy tractor rock rake from us, you receive a machine that is ready to work the day it arrives, with genuine European-based support behind it.
- "The EW-4000 covers 3.6 m in one pass and leaves really clean windrows – much faster than our old 3 m rake." – Vegetable grower from Westland, Netherlands.
- "Perfect for golf course work – adjustable from the cab and the tines last well on our sandy soil." – Superintendent from Noord-Brabant, Netherlands.
- "Used it on steep vineyard terraces with a 125 hp tractor – very stable and collected everything in neat rows." – Contractor from Rheinhessen, Germany.
- "Cleaned our grass runway in two days – saved us from potential aircraft damage and a lot of hand work." – Airfield operator from Oostende area, Belgium.
- "Good value rock rake for sale – wide coverage, reasonable power requirement, and parts arrived next day when needed." – Contractor from Northern France.


