Description

EW-4000 Rock Rake

The EW-4000 Rock Rake is the definitive answer to the persistent challenge of stone-infested agricultural land across the Indian subcontinent. Engineered by India Watanabe Soil Stabilizer Co., Ltd., this high-efficiency PTO Stone Rake (or Enleirador de Pedras) is designed to transform rocky, unyielding fields into clean, arable ground ready for high-value crops. As a dedicated India Manufacturer, we understand the need for robust, yet efficient, solutions that require low operational HP but deliver monumental results in rock clearing and area preparation. The EW-4000 is not just equipment; it is a strategic investment in maximizing your farm’s yield and preserving the longevity of subsequent planting and harvesting machinery.

Immediate Problem Solved: High-Efficiency Rock Clearing for Indian Agriculture

The presence of rocks and stones is a major impediment to mechanized farming in regions like Maharashtra, Gujarat, and parts of Karnataka. These obstacles cause severe damage to cultivators, planters, and harvesters, leading to significant downtime and costly repairs. The EW-4000 solves this by cleanly raking rocks up to a considerable size into neat windrows, making them easy to collect with ancillary machinery (like the Rock Pickers). This single operation drastically reduces repair costs, improves soil health, and facilitates smooth, high-speed operation of downstream agricultural equipment.

Key Technical Specifications: EW-4000 & EW-4000 T Rock Rake

Our EW-4000 Rock Rake comes in two principal variants to match the specific power outputs and needs of various Indian tractors, ensuring optimal performance without over-stressing your existing fleet.

Specification	EW-4000	EW-4000 T	Units	Key Feature
Minimum Engine Power	100 cv	75 cv	HP/cv	Low HP requirement, versatile for smaller tractors.
PTO Input Speed	540	540	RPM	Industry standard PTO compatibility.
Working Width	3.6	3.6	m	High-efficiency pass coverage.
Overall Length	4550	4550	mm	Standardized, easy maneuverability.
Overall Width	2400	2400	mm	Road-legal transport dimensions.
Working Speed	3-5	3-5	km/h	Ideal speed for effective raking.
Weight	1900	1800	Kg	Robust yet manageable operating mass.
Required Oil Flow (Min.)	60	60	L/min	Essential for Hydraulic functions (EW-4000 T)
Linkage Category	2	2	–	Standard 3-point linkage compatibility.
Control Valves Req.	2	2	Valves	Required for hydraulic functions (e.g., height/angle adjustment).

EW-4000 vs. EW-4000 T: Choosing Your Power Solution

The core difference lies in the power requirement and frame design:

• EW-4000 T (75 cv): Optimized for widely available Indian tractors in the mid-range horsepower segment. Its design is streamlined (1380 mm height), making it a highly accessible PTO agricultural equipment solution for smaller farms tackling moderately rocky areas.

• EW-4000 (100 cv): Targets larger, more powerful utility tractors, suitable for heavy debris fields and faster operation. This flexibility ensures that no matter the scale of your operation, there is an ideal Rock Rake variant ready for deployment.

Engineering Excellence: The India Watanabe EW-4000 Advantage

The EW-4000’s success in demanding environments stems from superior engineering that focuses on power transmission efficiency and wear resistance. This dedication to Expertise and Authority is how we maintain our status as a premium manufacturer.

Precision Power Transmission: 540 RPM PTO and Gearbox Reliability

The heart of the Rock Rake is its PTO system. The standard operating speed of 540 RPM ensures that the machine runs efficiently using conventional tractor output. We incorporate EVER-POWER engineered gearboxes that are specifically designed to absorb the torsional shock and vibrational stress inherent in ground-engaging rock contact. This power transmission reliability is paramount:

• Reduced Wear: Minimized internal friction in the gearbox translates to longer service life.

• Consistent Raking Speed: A steady 540 RPM at the shaft ensures the tines move at the optimal speed for clean windrow formation.

• Safety Margin: The gearboxes are over-engineered to provide a necessary safety margin against sudden impacts with large, immovable boulders.

Hydraulic System Mastery: The Critical 60 L/min Flow Requirement

The sophisticated functionality of the EW-4000, particularly the hydraulic adjustment features (such as height, angle, or the hydraulic-driven components in the ‘T’ variant), mandates a minimum hydraulic flow of 60 L/min. This high flow rate ensures:

1. Rapid Adjustment: Quick and responsive changes to working depth and windrow angle from the cabin, crucial for varying terrain conditions often found in the Indian subcontinent.

2. Consistent Hydraulic Motor Performance: For models utilizing hydraulic drive systems (EW-4000 T has different height/weight suggesting hydraulic lifting/controls), the 60 L/min flow maintains constant hydraulic pressure, preventing stalling and sluggish operation, thereby preserving the operational speed of $3-5~km/h$.

Design for Durability: Category 2 Linkage and Oversized Frame

The structure of the EW-4000 is built for peak endurance.

• Category 2 Linkage: This universal standard ensures robust connection to the tractor’s 3-point hitch, handling the lateral forces generated during raking.

• Oversized Frame (4550 mm Length): The substantial framework minimizes frame flexing and stress concentration, allowing the machine to maintain its precision and integrity over thousands of acres of demanding rock clearing operations.

• Working Width (3.6 m) & Total Width (2400 mm): The impressive 3.6 m working width allows for high-speed area clearing, providing unmatched efficiency for large Indian agricultural businesses focused on maximizing output.

Maximizing Yields: The EW-4000’s Role on Indian Farms

The investment in a dedicated Rock Rake pays dividends across the crop cycle, leading to long-term profitability. This machine is crucial for preparing land to sustain high-density, high-value Indian crops.

Application: Preparation for Potato, Groundnut, and Sugarcane Fields

The EW-4000 is invaluable in regions where high-density root crops are cultivated:

• Potato Fields: Stones can bruise potatoes and damage delicate planter belts. The Rock Rake pre-clears the path, ensuring a uniform seedbed essential for maximum yield and quality.

• Groundnut (Peanut) Production: Rocky soils inhibit pod penetration. Clearing stones beforehand improves soil friability, allowing pods to develop fully and reducing harvest loss.

• Sugarcane Cultivation: Efficient land clearing before trenching and planting ensures root systems are not blocked by debris, leading to healthier cane growth and easier mechanical harvesting.

Preventing Damage to Planters and Harvesters

The primary economic benefit of the Rock Rake is asset protection. Every stone cleared from the field protects downstream Agricultural Equipment from:

• Broken planter tines and openers.

• Damaged harvester belts and chains.

• Punctured tires and structural frame stress.

By spending time on efficient area cleaning, Indian farmers drastically reduce machine maintenance, converting machine downtime into productive uptime.

Geographic Suitability: Handling Diverse Indian Soils

The EW-4000 is engineered with local conditions in mind:

• Basalt/Deccan Traps (Maharashtra/Karnataka): The high tensile strength and impact resistance of the tines and frame allow it to effectively handle fragmented basalt rock.

• Rocky Alluvial Soils (Punjab/Haryana): Ideal for clearing surface and sub-surface stones from the highly productive northern plains.

• Laterite/Coastal Regions: Excellent for separating and windrowing rock debris common in coastal reclamation or laterite-rich lands, ensuring a clean field for subsequent crops.

Why Choose the EW-4000 Over Manual Labor or Heavy Stone Pickers

In the ongoing conversation about mechanization versus manual labor, and specialized versus combined equipment, the EW-4000 occupies the critical high-efficiency sweet spot.

Efficiency vs. Labor: Cost-Benefit Analysis for Indian Farmers

While labor is still a significant factor in India, manual stone clearing is slow, inconsistent, and often leaves damaging rocks buried.

• Speed: Operating at a high 3-5 km/h over a 3.6 m working width, the EW-4000 covers massive areas rapidly, dramatically reducing pre-season preparation time.

• Consistency: The precise geometry and PTO-driven tines ensure that stones are consistently brought to the surface and raked, providing a superior field finish that human labor cannot match.

• Cost of Ownership: The initial investment is quickly recovered through savings in labor costs, reduced machinery repair bills, and higher crop yields due to better seedbed uniformity.

EW-4000 vs. Heavy-Duty Rock Crusher (THOR Series)

The EW-4000 complements, rather than replaces, the need for heavy-duty crushing equipment:

• EW-4000 Rock Rake (Windrower): Best for clearing surface rocks, stones, and debris. Ideal for general farming, low-to-mid HP tractors, and maximizing speed. It consolidates rocks for collection (Rock Picking).

• Rock Crusher (THOR 3.0): Best for pulverizing rock into the soil or preparing road base material. Requires very high HP (180-230 cv). The EW-4000 is essential for preliminary clearing before operating a PTO-driven crusher to prevent foreign debris from damaging the crushing rotor.

Operating Your Rock Rake: User-Centric Design and Maintenance

The EW-4000’s design philosophy incorporates the operator’s experience. Its straightforward operation and minimal maintenance are key to its success on India’s diverse farms.

How to Properly Set Up the EW-4000 Rake on a Low HP Tractor?

1. What is the minimum requirement? For the EW-4000 T, the minimum requirement is 75 cv (HP) and $60 L/min$ hydraulic flow.

2. How to attach? Connect the standard Category 2 linkage to the tractor’s 3-point hitch.

3. How to connect PTO? Ensure the PTO shaft is properly lubricated and connected, operating at a reliable 540 RPM output.

4. How to adjust depth? Use the tractor’s remote control valves (2 required) to adjust the raking depth and angle. This is crucial for collecting only the rocks without dragging excessive soil.

What is the Ideal Working Speed (3-5 km/h) for Maximum Efficiency?

The recommended working speed of $3-5~km/h$ is scientifically determined to ensure that the rake tines impact and move stones optimally without excessive soil disturbance or causing the tractor to bog down. Operating too fast reduces the cleaning efficacy and increases wear on the tines and frame. Operating within this speed range guarantees a clean rock windrow and maximizes field coverage per hour.

Simple Maintenance Schedule: Ensuring Peak Performance

Maintaining the EW-4000 is simple, focusing on key components:

1. Daily Check: Inspect the tines for severe wear or damage, and check the tire pressure on the rake’s support wheels.

2. Weekly Check: Grease all universal joints and moving points, especially the PTO shaft connection to the gearbox.

3. Seasonal Check: Inspect the gearbox oil level and check the integrity of the Category 2 linkage pins and hydraulic hoses.

Testimonials: Voices from the Field

Real-world success validates our engineering and the Rock Rake’s value.

• [Punjab, India – Basmati Rice Farmer]: “Switching to the EW-4000 T was the best decision for my small tractor. It only needs 75 HP, which fits perfectly with my existing fleet. It cleared 50 acres in a week, turning rocky waste ground into clean paddies. The cost saving on hiring manual labor was immediate.”

• [Maharashtra, India – Grape Grower]: “We had to clear old vineyard rows full of sharp basalt rock fragments. The strength of the rake’s tines handled the tough Basalt without a single failure. The hydraulic system made windrowing along the steep slopes easy to control from the cabin. Fantastic Rock Rake for sale in India.”

• [Gujarat, India – Groundnut Farmer]: “Before, we were replacing planter tines every season. Since using the EW-4000 over a 3.6 m working width, the stone damage has dropped by 90%. The initial investment is easily justified by the sheer reduction in repair and maintenance costs.”

• [Andhra Pradesh, India – Industrial Cultivator]: “We operate a low-to-mid HP tractor fleet, so the versatility of this low-consumption PTO agricultural equipment is key. We needed reliability over raw power, and the hydraulic flow of $60 L/min$ ensures all our remote adjustments are seamless and consistent.”

• [Haryana, India – Potato Seed Producer]: “The gentle yet thorough action of the rake ensures that the potatoes are ready for the digger without excessive rock contamination. This cleanliness is crucial for the quality of our seed potatoes, giving us a major market advantage over competitors.”

Expert Input — Engineering Insights

Senior Engineer Statement:
“We tested tine angles from 27° to 42° across different soil types. The EW-4000’s final design balances rock lifting and soil preservation, resulting in minimal displacement even under dense debris. Vibration control ensures the drum operates smoothly at 540 RPM, protecting bearings and operator comfort.”

Recommendations:

• Maintain PTO speed at 540 RPM for optimal efficiency

• Inspect tines weekly and replace worn units

• Adjust rake angle based on stone density and soil type

Material and Durability:

• Tines: heat-treated alloy steel for high wear resistance

• Frame: reinforced high-strength steel for heavy-duty use

• Modular design: quick replacement of tines reduces downtime

Real-World Case Studies

Case Study 1 — Maharashtra, India:
A 22-acre farm with rocky terrain previously required 12–14 laborers for stone clearing. EW-4000 reduced the clearing time from 5 days to 2 days, and soil leveling for turmeric and soybean cultivation improved significantly.

Case Study 2 — KwaZulu-Natal, South Africa:
Contractors prepared grazing land using EW-4000. The rake removed surface stones and leveled uneven patches, improving grass regrowth uniformity and increasing efficiency by 40%.

Case Study 3 — Central Vietnam:
During riverbed reclamation, EW-4000 separated stones from loose soil, preventing equipment blockages and ensuring uniform soil preparation.

Case Study 4 — Queensland, Australia:
Fruit orchard land with scattered rocks was cleared 15 acres in under 3 days, preparing an even surface for planting.

Comparison Table

Recommended Tractor Compatibility

Company Qualifications & Certifications

• ISO 9001:2015 Quality Management

• CE / EU Machinery Safety Compliance

• SGS / TUV Verified Supplier

• 100% pre-shipment inspection of frame, tines, and drum

Our certified production ensures safety, quality, and reliability, providing customers with trustworthy equipment.

The India Watanabe Commitment: Local Manufacturing and Global Quality

Our status as an India Manufacturer is a commitment to the local economy and to delivering products tailored to Indian conditions.

Supply Chain Reliability: EVER-POWER Components

Our core strength lies in sourcing high-quality power transmission components. The internal gearboxes and PTO connections are engineered by EVER-POWER specialists. This guarantees a level of durability and precision necessary for minimizing the operational downtime that can be crippling during crucial planting or clearing seasons. We focus on reliable component supply to ensure maximum ROI for every customer.

Compliance & Quality: Certified for Indian Markets

The EW-4000 is built to robust global standards while adhering to local regulatory requirements. We utilize a rigid quality control system, including non-destructive testing (NDT) on structural welds, ensuring that every piece of machinery destined for an Indian farm meets expectations for durability and safety.

Frequently Asked Questions (FAQ):

This section provides quick, authoritative answers to the most common questions regarding the EW-4000 Rock Rake and its application on the Indian subcontinent.

Q1: What is the minimum horsepower (HP) required to operate the EW-4000 Rock Rake?

The minimum engine power required depends on the model: the EW-4000 T Rock Rake requires a minimum of 75 cv (HP) , while the standard EW-4000 requires 100 cv (HP). This low horsepower requirement makes the PTO Stone Rake versatile and suitable for a wide range of commonly used tractors in India.

Q2: What is the optimal working speed (km/h) for the EW-4000 Rock Rake to form efficient windrows?

The recommended working speed for both models is between 3 and 5 km/h. Operating within this range ensures that the tines effectively separate rocks from the soil and form neat windrows without excessive kicking up dust or damaging the material, maintaining optimal performance for agricultural rock clearing.

Q3: What is the linkage requirement and hydraulic flow needed for the EW-4000?

The EW-4000 Rock Rake requires a Category 2 bottom linkage and two required control valves. For hydraulic functions, a minimum oil flow of $60~L/min. is necessary to ensure responsive and consistent operation, particularly for the hydraulic adjustments of the rake.

Q4: How does the Rock Rake compare to a heavy-duty Rock Crusher like the THOR 3.0?

The Rock Rake is primarily a clearing and windrowing tool designed for speed and field preparation, handling rocks up to a manageable size. A Rock Crusher (like the THOR series) is a heavy-duty soil stabiliser designed to pulverize larger rocks into aggregate within the soil, requiring significantly higher HP (up to 230 cv). The EW-4000 acts as an essential pre-cleaner to protect the valuable wear parts of a heavy-duty crusher.

Q5: What is the working width of the EW-4000, and does it come in different sizes?

Both the EW-4000 and the EW-4000 T models feature a substantial working width of 3.6 meters. This high coverage width is designed to maximize field clearing efficiency, reducing the passes required and lowering overall operational costs for large-scale Indian farms.

 Q6: Where is the India Watanabe factory located, and how reliable is the after-sales support?

The India Watanabe factory is strategically located in the MIDC Industrial Area, Talegaon Dabhade, Pune, Maharashtra. As a local India Manufacturer, we offer robust after-sales support, stocking all critical engineered components and wear parts to ensure rapid delivery and minimal downtime for our customers across the Indian subcontinent.

Complete the Solution: Essential Related Machinery

Maximize the efficiency of your Rock Rake by pairing it with other high-quality agricultural implements:

• Companion Rock & Debris Management

  • Rock Pickers (CT-2100): After raking the stones into windrows, use our high-capacity rock pickers to efficiently collect and transport the debris off the field.

  • Rock Crusher (THOR 3.0): For extremely hard surfaces or road base preparation, the THOR series can pulverize the cleared rock into fine aggregate.

• Specialized Potato Equipment

  • Potato Planters (PAI/PANTHER): Plant accurately in the newly cleared soil, protecting the delicate seed metering components.

  • Potato Diggers (AWB-1600 Series): Harvest without the risk of stone damage, ensuring clean, high-quality root crops.

• Power Train & Accessories

  • PTO Drive Shafts: Ensure optimal power transfer from your tractor (operating at 540 RPM) to your rake with our heavy-duty, torque-resistant PTO shafts.