EP-EW-4000-ROCK RAKE

In the competitive world of modern agriculture and land development, soil quality is fundamental to yield and operational efficiency. For professional farmers and construction contractors in Korea and globally, the presence of stones, boulders, and debris in the soil presents a significant obstacle to productivity. The EW-4000 series stone rake is an exceptional piece of engineering designed to address this very problem.

More than just a simple attachment, this heavy-duty power stone rake is a transformative tool that rakes surface and subsurface stones into neat rows for easy collection. Unlike standard manual stone rakes or light-duty garden equipment, the EW-4000 is engineered for industrial-grade performance, boasting a working width of 3.6 meters and a robust frame capable of handling the harsh geological conditions common in Korea’s mountainous or rocky agricultural regions. With the EW-4000, operators can significantly reduce wear and tear on subsequent planting machinery (such as potato planters and harvesters), extending the lifespan of their entire equipment fleet while maximizing crop uniformity and market value.

The series includes two different models: the standard EW-4000 and the specialized EW-4000 T, to accommodate varying tractor power and working height requirements. With a minimum engine power requirement of just 75 horsepower for the T model, this stone rake machine offers versatility for medium to large-scale operations. Whether you’re preparing seedbeds for ginseng, radishes, or potatoes, or clearing construction sites for foundation work, the EW-4000 series ensures perfectly prepared land.

The successful operation of the EW-4000 tractor-mounted stone rake is due to its sophisticated rotating mechanism. Unlike passive rakes, this active, power-driven stone rake utilizes a PTO-driven rotor equipped with carefully designed, high-strength steel teeth. As the tractor moves forward at an optimal working speed of 3-5 km/h, the rotor rotates in the opposite direction (or adjusted to a specific direction depending on the model settings), effectively raking the surface soil. This action removes stones ranging from 50 mm to 500 mm in diameter, spiraling them to the side of the machine to form a clean, continuous pile of stones.

In terms of materials, the EW-4000 series is manufactured from high-quality, wear-resistant alloy. The chassis is reinforced to withstand the high torque stresses generated when impacting embedded rocks.

4. Application Scenarios & Material Specs

When using heavy machinery such as the EW-4000 rock rake, adherence to local and international regulations is crucial. In South Korea, land development and farmland improvement are governed by the Farmland Improvement Act and strict environmental guidelines concerning soil erosion and runoff. The EW-4000 is designed to meet these standards, providing precise depth control to ensure only surface rocks are removed without damaging deep soil structure or causing excessive soil compaction, a key concern for the Korean Ministry of Agriculture, Food and Rural Affairs (MAFRA). Furthermore, effective rock removal is often a legal prerequisite for converting mountainous terrain into arable land, ensuring safe operation of machinery.

Globally, particularly in regions like Europe and North America, soil protection laws (such as the EU Common Agricultural Policy standards on soil health) mandate measures to prevent land degradation. The EW-4000 efficiently clears land without the need for chemicals or excessive burning of debris, aligning with sustainable agricultural practices. In construction applications, using a rock rake on a skid steer loader or tractor to clear debris ensures compliance with site safety regulations regarding equipment stability and hazardous material removal. EVER-POWER ensures that all hydraulic and mechanical safety guards on the EW-4000 series comply with ISO safety standards, protecting operators and ensuring the equipment meets road safety and site safety requirements across different jurisdictions.

The agricultural sector is undergoing a massive transformation towards mechanization, driven primarily by labor shortages and the need to increase crop yields. In markets such as South Korea, Japan, and parts of Europe, the aging agricultural workforce is leading to an increasing demand for automated solutions like rock rakes.

Manual stone removal is no longer economically viable. The current trend is towards using larger, more powerful agricultural implements to cover wider areas in a single pass. The EW-4000, with its 3.6-meter working width, perfectly fits this trend.

Client 1 Profile:
South Korea
Відгуки клієнтів:
“We’ve been using the EW-4000 for over a year now, and it’s a game-changer for our ginseng farm. The rocky soil here in Gangwon-do was a huge problem for planting, but with the 3.6-meter working width and its ability to clear everything from small stones to large boulders, our land preparation is faster and more efficient. This rock rake has saved us so much time and reduced wear on our planting equipment. We highly recommend it to anyone in Korea dealing with similar soil conditions.”

Client 2 Profile:
Global Farming Supplies, USA
Відгуки клієнтів:
“As a distributor in the United States, we’ve had a lot of inquiries about the EW-4000, and the feedback from our clients has been overwhelmingly positive. Farmers dealing with rocky soils in areas like the Midwest love how this machine clears debris efficiently, even in heavy, clay-rich soils. The rock rake’s compatibility with a wide range of tractors, from John Deere to Kubota, has made it a hit among our customers.”

We understand that soil conditions vary not only from country to country but also within different regions of the same country.

Our manufacturing facilities are equipped with advanced CNC machining equipment and robotic welding production lines, enabling us to provide exceptional customized services.

Unlike traditional fixed assembly lines, we can adjust the chassis reinforcement, tooth spacing, and hydraulic line layout of our rock rakes to suit specific regional needs, such as adapting to the heavy clay soils common in Southeast Asia or the dry, abrasive soils of the Middle East.

We offer OEM services to our distributors and can customize the connection system to suit specific tractors.

Whether you need a rock rake configuration for road construction or specialized equipment for agricultural production, our engineering team is ready to assist you.

10. About us

– Rock & Soil Equipment: Rock rakes, rock pickers, rotavators, rotary cultivators

– Potato-Specific Machinery: Potato planters, potato furrowers, potato diggers (2-row, trailed, 2-row trailed, 4-row trailed), potato harvesters (2-row, big-bag compatible), potato processing auxiliary equipment

– Livestock Machinery: Specialized equipment for livestock farming operations

– Agricultural Inputs: High-performance fertilizers

Дізнайтеся більше про нашу історію

11. Replaceable parts

11.1. PTO Drive Shaft and PTO Gearbox

1. PTO Shaft 

2. Agricultural Gearboxes / PTO Gearboxes

11.2. Agricultural Gearboxes (including various applications)

1. Rotary tiller gearboxes

2. Fertilizer spreader gearboxes

3. Rake & mower PTO gearboxes

11.3. Hydraulic Cylinders

1. Standard hydraulic cylinders

2. Custom hydraulic cylinders

11.4. Drive Chains / Sprockets / Couplings / Gear Components

1. Roller Chains

2. Chains & Sprockets

3. Couplings