{"id":414,"date":"2025-12-24T01:23:46","date_gmt":"2025-12-24T01:23:46","guid":{"rendered":"https:\/\/pto-stone-crusher.com\/?post_type=product&p=414"},"modified":"2026-06-12T07:50:34","modified_gmt":"2026-06-12T07:50:34","slug":"ep-4550mm-rock-rake","status":"publish","type":"product","link":"https:\/\/pto-stone-crusher.com\/nl\/product\/ep-4550mm-rock-rake\/","title":{"rendered":"EP-4550mm ROCK RAKE"},"content":{"rendered":"
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EP-4550mm Rock Rake \u2014 EW-4000 & EW-4000T Series<\/h2>\n

Clearing a field of surface rocks is one of the most labor-intensive and equipment-punishing tasks in agricultural land preparation. The EP-4550mm rotshark<\/strong> transforms that challenge into a single, efficient tractor pass across a 3.6-meter working width. Designed for professional land preparation, orchard establishment, and large-scale soil remediation, this heavy-duty tractor-mounted implement systematically combs the soil surface, separating stones and debris from finer soil particles and consolidating them for easy collection or windrow disposal. It is a purpose-built rock rake for tractor<\/strong> operations \u2014 not a lightweight accessory, but a serious field machine rated at 1,800 kg (EW-4000) and 1,900 kg (EW-4000T) and requiring a minimum 100 cv tractor engine on the hydraulic variant.<\/p>\n

The EP series comes in two distinct configurations: the EW-4000, which uses hydraulic oil flow from the tractor (minimum 60 L\/min.) to drive its working mechanism, and the EW-4000T, a transmission-drive variant requiring a minimum engine power of 75 cv with no dedicated oil-flow requirement. Both share identical footprint dimensions \u2014 4,550 mm length \u00d7 2,400 mm width \u2014 and attach via a Category 2 three-point bottom linkage, making them compatible with the full range of mid-to-large agricultural tractors common across Korean farmland, Japanese-market export tractors, and global B2B equipment fleets. For buyers in South Korea evaluating a landscape rock rake<\/strong> at commercial scale, this product is engineered specifically for the performance levels Korean agricultural export standards and domestic field-preparation contractors demand.<\/p>\n<\/div>\n

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1. Technical Specifications \u2014 EP-4550mm Rock Rake (EW-4000 Series)<\/h2>\n

The table below covers the complete technical data for both variants of the EP-4550mm EW-4000 series. All dimensions are in millimeters unless stated. Engine power is expressed in metric CV (horsepower). Oil flow requirement applies to the EW-4000 hydraulic variant only.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Technical Parameter<\/th>\nEW-4000<\/th>\nEW-4000T<\/th>\n<\/tr>\n<\/thead>\n
Dimensions<\/td>\n<\/tr>\n
Length (mm.)<\/td>\n4,550<\/td>\n<\/tr>\n
Width (mm.)<\/td>\n2,400<\/td>\n<\/tr>\n
Height (mm.)<\/td>\n1,380<\/td>\n1,960<\/td>\n<\/tr>\n
Gewicht<\/td>\n1,800 Kg<\/td>\n1,900 Kg<\/td>\n<\/tr>\n
Bottom Linkage Category<\/td>\n2<\/td>\n<\/tr>\n
Werkbreedte<\/td>\n3.6 m.<\/td>\n<\/tr>\n
Tractor Requirements<\/td>\n<\/tr>\n
Engine Power (min.)<\/td>\n100 cv<\/td>\n75 cv<\/td>\n<\/tr>\n
Oil Flow (min.)<\/td>\n60 L\/min.<\/td>\n\u2014<\/td>\n<\/tr>\n
Werksnelheid<\/td>\n3 \u2013 5 Km\/h<\/td>\n<\/tr>\n
Required Control Valves<\/td>\n2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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\"Rock<\/div>\n

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2. Five Key Advantages of the EP-4550mm Rock Rake<\/h2>\n
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\u2460 Wide 3.6 m Working Width \u2014 Fewer Passes<\/h3>\n

At 3.6 meters of effective working width, this power rock rake<\/strong> covers substantially more ground per pass than smaller landscape or garden units. For commercial field preparation contractors working on new crop establishment, vineyard clearance, or pasture improvement in South Korea’s Jeolla, Gyeonggi, or North Chungcheong agricultural regions, fewer passes means less fuel consumption, less operator fatigue, and significantly lower cost per hectare cleared. The wide working geometry is matched to the drawbar geometry of modern four-wheel-drive tractors commonly operated at Korean agricultural cooperatives and land reclamation projects across the peninsula.<\/p>\n<\/div>\n

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\u2461 Dual-Configuration Flexibility \u2014 Hydraulic or Transmission Drive<\/h3>\n

The EW-4000 uses the tractor’s hydraulic system (minimum 60 L\/min. oil flow), while the EW-4000T relies on a mechanical transmission drive, opening the machine to operators whose tractors have limited auxiliary hydraulic capacity. This dual-configuration design means that a single product family \u2014 the EP-4550mm \u2014 covers the broadest possible range of available tractor types. Korean agri-contractors managing mixed tractor fleets can standardize on this rock rake attachment<\/strong> series without worrying about hydraulic compatibility across every machine in their yard.<\/p>\n<\/div>\n

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\u2462 Category 2 Three-Point Linkage \u2014 Universal Mounting<\/h3>\n

Mounting via a Category 2 bottom linkage means the EP-4550mm connects to any standard Category 2 tractor hitch \u2014 the most common configuration on tractors in the 75\u2013200 cv range sold across South Korea, Japan, and Southeast Asia. There is no proprietary coupling hardware and no need for an adapter frame. The implement lifts fully clear of the ground for road transport and lowers precisely to working depth via the tractor’s existing draft control system. This universal mounting approach is one of the key reasons this 3 point rock rake<\/strong> design is specified by B2B buyers managing large fleet deployments.<\/p>\n<\/div>\n

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\u2463 Heavy-Duty Construction \u2014 Built for Commercial Loads<\/h3>\n

At 1,800\u20131,900 kg of operating weight, this is unmistakably a commercial-grade heavy duty rake for removing rocks<\/strong>, not a light landscape tool. The main frame is fabricated from structural steel sections, welded and reinforced at high-stress junctions to absorb the continuous impact loads generated during rock-strewn field operation. The tines and working elements are made from hardened steel alloys selected specifically for wear resistance against abrasive contact with granite, basalt, and compacted clay soils \u2014 the rock types most commonly encountered across Korea’s Jeju Island volcanic terrain and mountainous inland farmland.<\/p>\n<\/div>\n

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\u2464 Replaceable Wear Parts \u2014 Low Lifetime Maintenance Cost<\/h3>\n

The working tines and wear-contact components of the EP series rock rake machine<\/strong> are designed as bolt-on replaceable parts. When a tine wears down or suffers impact damage, field replacement takes minutes with standard hand tools \u2014 no specialized workshop required. For operations in remote Korean highland areas or island farming communities where downtime directly translates to lost planting windows, this serviceability is a genuine operational advantage. A well-maintained set of replacement parts held on-hand keeps the machine productive across multiple seasons without major overhaul costs.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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3. How the EP-4550mm Rock Rake Works<\/h2>\n

The fundamental principle behind any tractor-mounted rotshark<\/strong> is the separation of surface and shallow-subsurface stones from cultivable soil without removing soil from the field. As the tractor advances at a working speed of 3\u20135 km\/h, the machine’s arched frame lowers the tine bar assembly into contact with the soil surface at a consistent, adjustable working angle. The forward motion drags the tines through the soil, catching rocks, clods, root masses, and debris while allowing finer soil particles to fall back through the gaps between tine tips. This screening action is continuous \u2014 there are no cycles, no dumping pauses, and no collection hopper to empty \u2014 making the rock rake one of the fastest methods available for initial field clearance prior to seeding or planting.<\/p>\n

In the EW-4000 hydraulic configuration, the tractor’s auxiliary hydraulic circuit supplies a minimum 60 L\/min. oil flow to power the working mechanism’s active elements \u2014 typically an oscillating or rotating tine bar that improves rock-dislodging action in compacted or clay-heavy soils. The EW-4000T transmission-drive variant instead receives mechanical energy from a ground-drive wheel or PTO-linked transmission, making it suitable for tractors with limited hydraulic capacity. In both cases, the operator controls working depth and lateral pressure via the tractor’s three-point linkage and can adjust on-the-go without leaving the cab. Two control valves are required to manage the hydraulic functions \u2014 raising, lowering, and active mechanism control \u2014 both of which are standard outputs on any modern agricultural tractor sold in Korea or globally.<\/p>\n

Rocks gathered by the tines accumulate progressively ahead of the working bar, forming a loose windrow that runs parallel to the direction of travel. Once the tractor reaches the headland, it turns, and the accumulated rocks remain in their windrow for subsequent mechanical collection or boundary disposal. Over multiple passes with progressively finer working angles, even heavily rock-infested fields can be brought to a planting-ready surface condition. This systematic approach is what distinguishes the professional rock rake for tractor<\/strong> from hand methods or smaller garden equipment, and it is why land reclamation contractors and large-scale agricultural developers in South Korea, as well as buyers across Europe, North America, and Southeast Asia, consistently specify this equipment class for new land development projects.<\/p>\n<\/div>\n

\"EP-4550mm<\/p>\n

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4. Materials & Build Quality<\/h2>\n

The main structural frame of the EP-4550mm rock rake machine<\/strong> is fabricated from high-tensile structural steel, typically S355 or equivalent grade, selected for its combination of yield strength and weldability. The frame members are square- and rectangular-section hollow steel profiles, welded using automated or semi-automated MIG\/MAG processes at junctions that carry the highest bending and torsional loads during field operation. Post-weld inspection and stress-relief treatments are applied at critical connection points to reduce the risk of fatigue cracking under the cyclical loading generated by continuous rock impact.<\/p>\n

The working tines \u2014 the primary soil-contact elements \u2014 are produced from boron-alloyed hardened steel (typically 27MnCrB5 or similar), achieving a surface hardness of approximately 45\u201352 HRC after heat treatment. This hardness level is specifically chosen to resist abrasive wear from quartz-bearing rock surfaces, while maintaining enough core toughness to absorb the bending energy of striking a partially buried stone without shattering. Tines are bolted to the carrier bar using high-tensile fasteners (Grade 10.9), allowing field replacement of individual worn or damaged elements without specialized tooling. The complete tine bar assembly is mounted on the frame with adjustable working-angle brackets, enabling the operator to tune the raking depth and aggressiveness to match field conditions.<\/p>\n

External surfaces of the machine are prepared by shot-blasting to Sa 2.5 cleanliness standard before application of a two-coat paint system: an epoxy primer for corrosion protection and a polyurethane topcoat in the product’s characteristic high-visibility yellow-green color. This finish withstands the UV exposure, moisture, and mechanical abrasion typical of outdoor agricultural operation across the variable climate conditions of South Korea \u2014 from the humid summers of the southern coastal plains to the colder winters of Gangwon-do highland farming areas. All pivot and hinge points are equipped with grease nipples for regular lubrication maintenance, extending the service life of articulating components significantly beyond that of sealed-for-life alternatives in this duty class.<\/p>\n<\/div>\n

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5. Regulatory Compliance & International Standards<\/h2>\n

Agricultural implements mounted on tractors operate within regulatory frameworks that govern machinery safety, tractor compatibility, and in some countries, noise and vibration standards. Understanding the applicable regulations is an important part of procurement for B2B buyers operating commercial fleets in Korea and internationally.<\/p>\n

South Korea \u2014 Rural Development Administration (RDA) & KATS<\/h3>\n

In South Korea, agricultural machinery standards are administered by the Rural Development Administration (RDA \/ \ub18d\ucd0c\uc9c4\ud765\uccad) and the Korean Agency for Technology and Standards (KATS). Tractor-mounted implements must be compatible with the Category 2 three-point linkage standard per ISO 730, which this implement fully satisfies. Korean agricultural machinery safety regulations under the Agricultural Machinery Safety Act govern operator protection requirements; buyers should verify that the tractor cab and guarding provisions comply with local requirements when operating this implement at commercial scale. The Korea Forest Service (KFS \/ \uc0b0\ub9bc\uccad) additionally has guidelines for machinery used in forest land preparation, which is a common application for heavy-duty rock rakes in Korea’s extensive afforestation programs.<\/p>\n

ISO Standards \u2014 Three-Point Linkage & Safety<\/h3>\n

The Category 2 bottom linkage of this implement is designed to ISO 730:2009 (Agricultural wheeled tractors \u2014 Rear-mounted three-point linkage). This is the globally recognized standard that ensures dimensional interchangeability across tractor brands and implement suppliers. ISO 11684 governs safety signs and hazard pictograms on agricultural machinery, and this product series uses internationally standardized warning symbols at all pinch-point and hydraulic-hazard locations. Buyers in European export markets or those operating under CE-marked machinery frameworks should note that agricultural implements are covered by the EU Machinery Directive 2006\/42\/EC when placed on the EU market.<\/p>\n

European Union \u2014 Machinery Directive & CE Marking<\/h3>\n

For buyers in EU member states, tractor-mounted implements including rock rakes may require CE marking under the Machinery Directive 2006\/42\/EC, with a Declaration of Conformity provided by the manufacturer. ISO 4254-1 (Agricultural machinery \u2014 Safety \u2014 General requirements) sets the design framework for operator protection. Buyers importing this implement into EU markets should confirm documentation requirements with the relevant national authority.<\/p>\n

United States \u2014 ASABE Standards<\/h3>\n

In the US market, the American Society of Agricultural and Biological Engineers (ASABE) publishes Standard S217 governing three-point hitch dimensions. The Category 2 linkage on this implement conforms to ASABE S217 dimensions, ensuring compatibility with American-market tractors. OSHA agricultural equipment regulations (29 CFR Part 1928) set worker safety requirements around tractor-mounted implements during commercial operation.<\/p>\n

Australia & New Zealand<\/h3>\n

Australian Standard AS 2671 covers hydraulic fluid power requirements relevant to the EW-4000 hydraulic variant. Safe Work Australia guidelines for agricultural machinery operation apply when this implement is used by employees on commercial farms or contract land-clearance operations. New Zealand buyers should refer to WorkSafe NZ guidelines on tractor-implement safety in forestry and agriculture contexts.<\/p>\n<\/div>\n

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6. Application Scenarios<\/h2>\n

The EP-4550mm rotshark<\/strong> is a versatile land preparation tool suited to a wide range of environments and project types. Its 3.6-meter working width and heavy-duty construction make it particularly effective in commercial-scale operations where efficiency per hectare is the primary driver.<\/p>\n

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New Crop Field Establishment<\/h3>\n

When converting previously uncultivated land \u2014 reclaimed hillside terracing in Korea’s Gangwon-do province, newly drained lowland areas in Jeolla-do, or former forest clearances \u2014 the soil surface is typically laden with rocks, root stocks, and debris. A single pass with this landscape rock rake<\/strong> across the prepared ground consolidates that material into manageable windrows, leaving a stone-free seedbed ready for direct drilling or transplanting. The 3.6 m working width ensures that even large new-development sites are ready within a practical number of working days, critical for meeting seasonal planting windows.<\/p>\n<\/div>\n

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Orchard & Vineyard Preparation<\/h3>\n

Establishing orchards on rocky slopes \u2014 apple and pear orchards in Korea’s Chungcheong regions, or citrus groves on Jeju Island’s volcanic terrain \u2014 requires thorough rock removal before tree planting to protect subsequent cultivation equipment and prevent fruit quality issues from shallow rocky rootzones. The rock rake for tractor<\/strong> efficiently handles the surface and near-surface stone load, while the adjustable working angle prevents damage to loosened topsoil structure. The rock rake’s wide working pass keeps pre-planting preparation costs manageable even on larger orchard plots.<\/p>\n<\/div>\n

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Golf Course & Sports Field Construction<\/h3>\n

Golf course development and sports field construction in South Korea’s rapidly expanding leisure sector demands rigorous sub-surface and surface preparation. Rocks left in a sports turf sub-base cause uneven settlement, drainage problems, and injury risk. The EP series power rock rake<\/strong> efficiently processes the upper soil profile before final grading and turf installation, providing the clean, well-structured growing medium that high-quality turf grass establishment requires. Its working speed and width make it productive even on large fairway areas or full-scale football pitch projects.<\/p>\n<\/div>\n

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Reforestation & Forest Land Preparation<\/h3>\n

Korea’s ambitious national afforestation programs \u2014 managed by the Korea Forest Service \u2014 involve planting large areas of highland and coastal forest. Before young tree seedlings can be planted, the ground must be cleared of surface rocks that would impede planting machinery and damage seedling roots. The rock landscape rake<\/strong> handles this preparatory task efficiently, processing wide strips of forestry ground ahead of the planting crew or automated planting equipment. The machine’s hydraulic or transmission-drive versatility accommodates the range of tractor types used in Korean forestry operations.<\/p>\n<\/div>\n

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Pasture Renovation & Grassland Improvement<\/h3>\n

Pasture renovation \u2014 overseeding degraded grassland with improved grass varieties for cattle or dairy production \u2014 requires a clean, stone-free seed contact zone for good germination. Residual surface rocks left after initial cultivation prevent uniform seeding depth and can damage roller equipment used to firm the seedbed. The tow behind rock rake<\/strong> class of implement, of which the EP-4550mm is the heavy commercial equivalent, collects these stones systematically ahead of the seeder, delivering the clean surface needed for high germination rates on Korean dairy farms in Gyeonggi-do and Gangwon-do regions.<\/p>\n<\/div>\n

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Land Reclamation & Construction Site Cleanup<\/h3>\n

Construction site topsoil restoration requires removal of rubble, coarse gravel, and building debris mixed into disturbed soil before that area can be returned to agricultural or landscaping use. The rock screening rake<\/strong> function of the EP series \u2014 passing soil through the tine gaps while retaining larger material \u2014 is directly applicable to this type of land remediation project. Korean municipal and government-funded land reclamation projects along the West Sea coastal reclamation zones and on former industrial sites increasingly specify this type of equipment for post-construction soil cleaning prior to agricultural return.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\"pto-stone-crusher-rock-rake2\"<\/div>\n

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7. About Us<\/h2>\n

We are a specialist manufacturer and international distributor of professional agricultural land preparation equipment, with an established supply track record covering B2B buyers in South Korea, Japan, Australia, North America, Europe, and Southeast Asia. Our product range \u2014 including rock rakes, stone crushers, PTO-driven soil preparation attachments, and associated drive components \u2014 is developed and quality-tested for demanding commercial field conditions. Every machine leaves our production facility with a full dimensional check, hydraulic pressure test (where applicable), and pre-delivery inspection against the published specification sheet.<\/p>\n

For Korean buyers, we have experience coordinating shipments through Busan Port and Incheon logistics hubs, and we can prepare documentation in the format required by Korean customs authorities (\uad00\uc138\uccad) and the Rural Development Administration’s machinery registration process. Technical support is available for machine commissioning, operator training, and spare-parts supply. We stock the most commonly replaced wear items \u2014 tines, mounting hardware, and hydraulic fittings \u2014 for dispatch without lead time delays that would impair seasonal field preparation schedules.<\/p>\n

WorkShop<\/h3>\n
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8. Related Products \u2014 Complete Drive System<\/h2>\n

The EP-4550mm rock rake is part of a complete soil preparation and land clearance system. We also produce and supply the compatible drive components that keep your implement running efficiently \u2014 covering PTO shafts, gearboxes, and power transmission accessories for the full range of PTO-driven land preparation equipment.<\/p>\n

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Sprockets<\/a> \u2014 Drive System Components<\/h3>\n

Precision-engineered sprockets for PTO-driven and hydraulically actuated agricultural implements. Correct sprocket sizing ensures full power transfer from the tractor to the working mechanism of your rock rake attachment, extends chain and drive component life, and reduces the heat generated by mismatched drive geometry. Sourcing your implement and its drive sprockets from the same technical supply chain eliminates compatibility guesswork and simplifies spare-parts management across your fleet.<\/p>\n<\/div>\n

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Gearboxes \u2014 Power Transmission<\/h3>\n

Agricultural gearboxes for PTO-driven soil preparation machinery, stone crushers, and rock rake systems. Our gearbox range covers the speed reduction and torque multiplication requirements of medium to heavy implements operating at PTO speeds of 540\u20131000 RPM. Paired with the EW-4000T transmission-drive variant, a correctly specified gearbox ensures the working mechanism receives consistent drive power across the 3\u20135 km\/h operating speed range without thermal or fatigue issues. One-stop supply of implement, gearbox, and drive shafts simplifies your procurement process significantly.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\"Sprocket<\/div>\n

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Veelgestelde vragen<\/h2>\n
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\nQ1. What is a rock rake and how does it remove stones from agricultural soil effectively?
\n\u25bc<\/span><\/summary>\n
A rock rake is a tractor-mounted or tow-behind agricultural implement fitted with a series of hardened steel tines arranged across a working bar. As the tractor advances, the tines penetrate the soil surface and drag through the upper profile, catching rocks, stones, and debris while allowing finer soil particles to fall back through the gaps between tine tips. The collected stones accumulate into windrows ahead of or behind the working bar, depending on the machine’s design. The EP-4550mm rock rake covers 3.6 meters of working width per pass, making it highly efficient for commercial field preparation where large areas must be cleared before seeding or planting.<\/div>\n<\/details>\n<\/div>\n
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\nQ2. Which tractor size do I need to run the EP-4550mm rock rake effectively in Korean farming conditions?
\n\u25bc<\/span><\/summary>\n
The EW-4000 hydraulic variant requires a minimum engine power of 100 cv (approximately 74 kW) and a hydraulic oil flow of at least 60 L\/min. from the tractor’s auxiliary circuit. The EW-4000T transmission-drive variant requires only 75 cv minimum. Both attach via a Category 2 three-point linkage, which is standard on tractors from 75\u2013200 cv across most Korean and Japanese tractor brands including LS Tractor (Korean-made), TYM, Dongfeng, and the Kubota or Yanmar models widely operated on Korean farms. If your tractor meets these power and hydraulic requirements, the EP-4550mm will operate within its designed parameters.<\/div>\n<\/details>\n<\/div>\n
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\nQ3. What is the best tool to remove rocks from soil across large agricultural fields in Korea’s mountainous regions?
\n\u25bc<\/span><\/summary>\n
For large-scale commercial land preparation in Korea’s mountainous Gangwon-do or hilly Chungcheong regions, a tractor-mounted power rock rake in the EP-4550mm class is the most cost-effective and efficient solution. It clears a 3.6 m wide strip per pass at speeds of 3\u20135 km\/h, which translates to processed areas of approximately 1\u20132 hectares per hour depending on soil conditions and operator technique. For smaller plots or garden-scale work, a smaller pull-behind rock rake or a hand rake for removing rocks would be more practical, but for professional land preparation contracts, the powered tractor-mounted implement is the best tool available.<\/div>\n<\/details>\n<\/div>\n
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\nQ4. Where can I find a reliable rock rake manufacturer who supplies to Korea with proper technical support and spare parts?
\n\u25bc<\/span><\/summary>\n
When evaluating a rock rake manufacturer for Korean supply, look for: established B2B export experience to Northeast and Southeast Asia; availability of technical documentation in English (and ideally Korean); stock of replaceable wear parts (tines, fasteners, hydraulic fittings) for rapid dispatch; Category 2 linkage compliance per ISO 730; and willingness to provide a machine trial or demonstration before volume commitment. We meet all of these criteria and have existing logistics relationships with Korean freight forwarders experienced in agricultural machinery imports through Busan Port.<\/div>\n<\/details>\n<\/div>\n
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\nQ5. What does a rock rake do differently from a disc harrow or rotary tiller when preparing rocky farmland?
\n\u25bc<\/span><\/summary>\n
A disc harrow cuts and mixes soil but does not separate rocks from the soil \u2014 it simply buries or redistributes them. A rotary tiller pulverizes soil and organic matter but is severely damaged by rock contact, making it unsuitable for stony fields until after stone removal. The rock rake, by contrast, specifically separates stones from soil by screening the upper profile through its tine assembly, collecting rocks in windrows while leaving the soil profile structurally intact. This is its unique function \u2014 it does not cultivate, it clears \u2014 and it is used before disc harrowing or rotary tillage, not as a substitute for them.<\/div>\n<\/details>\n<\/div>\n
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\nQ6. How often do I need to replace the tines on a heavy duty rock rake used in Korean volcanic basalt soil conditions?
\n\u25bc<\/span><\/summary>\n
Tine wear rate depends heavily on the abrasiveness and hardness of the rocks being processed. On Jeju Island’s basalt-rich volcanic soils \u2014 among the most abrasive agricultural soil environments in Korea \u2014 hardened boron-steel tines typically last between 80\u2013150 operating hours before reaching the minimum acceptable working length and requiring replacement. On softer sandstone or granite-derived soils in inland Korean regions, service intervals of 150\u2013250 hours are more typical. We recommend inspecting tine length at every 50-hour service interval and carrying a full set of replacement tines on any major land clearance project to avoid unexpected downtime.<\/div>\n<\/details>\n<\/div>\n
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\nQ7. Which rake is best for rocks when I need to clear stones from a new orchard site in Gyeonggi-do, Korea?
\n\u25bc<\/span><\/summary>\n
For a new orchard site in Gyeonggi-do where you have a 100+ cv tractor available, the EW-4000 hydraulic rock rake is the recommended choice. It provides the active working mechanism that handles compacted or clay-heavy Gyeonggi-do soils more effectively than a passive tine design, and the 3.6 m working width means even a 2\u20135 hectare orchard site can be rock-cleared in one or two working days. If your tractor has limited hydraulic output, the EW-4000T transmission-drive version (requiring only 75 cv) is the appropriate alternative and delivers comparable rock-clearing performance in lighter soil conditions.<\/div>\n<\/details>\n<\/div>\n
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\nQ8. How does a landscape rock rake differ from a rockhound landscape rake and which suits commercial Korean land clearing projects?
\n\u25bc<\/span><\/summary>\n
A rockhound landscape rake is typically a North American product name for a powered rotating-tine rake attachment, often used on skid-steer loaders for small-area lawn or landscaping projects. A landscape rock rake in the commercial tractor-mounted category \u2014 such as the EP-4550mm EW-4000 series \u2014 is a fundamentally heavier, wider, and more productive machine designed for agricultural-scale field clearing, not garden or lawn work. For professional Korean land clearing contractors working on fields of one hectare or more, the tractor-mounted commercial rock rake is the correct product category. The rockhound or similar skid-steer attachments are better suited to tight-access landscaping projects where tractor access is limited.<\/div>\n<\/details>\n<\/div>\n
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\nQ9. When should I use a pull behind rock rake versus a 3 point mounted rock rake for Korean agricultural fieldwork?
\n\u25bc<\/span><\/summary>\n
A pull behind rock rake (tow-behind) is typically lighter, simpler, and requires only a drawbar hitch, making it accessible for tractors without Category 2 three-point linkage capability \u2014 useful for smaller, older Korean tractors or for use behind ATVs on smaller plots. A 3 point rock rake, such as the EP-4550mm EW-4000, mounts on the rear three-point linkage, allowing the operator to hydraulically control working depth and lift the implement for headland turns without leaving the cab. The three-point mounted version is generally more precise in working depth, more stable in uneven terrain, and significantly more productive on commercial-scale fields. For Korean farms with modern three-point equipped tractors, the mounted option is the preferred specification.<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n

Redacteur: PXY<\/p>","protected":false},"excerpt":{"rendered":"

The EW-4000 is a highly efficient heavy-duty stone rake designed for agriculture and construction, capable of easily clearing stones and debris from the soil. It has a working width of 3.6 meters and is suitable for various soil types, performing exceptionally well in rocky terrain. Powered by a PTO drive system, it requires a minimum engine power of 100 CV and a hydraulic flow rate of 60 L\/min, and is equipped with a 2-way control valve for efficient and stable operation. The EW-4000 not only efficiently cleans the soil but also extends the lifespan of other agricultural equipment by preventing damage to planting and harvesting machinery from stones, making it an ideal choice for land preparation and crop cultivation.<\/p>","protected":false},"featured_media":419,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[25],"product_tag":[28],"class_list":["post-414","product","type-product","status-publish","has-post-thumbnail","product_cat-rock-rake","product_tag-rock-rake","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/product\/414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/media\/419"}],"wp:attachment":[{"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/media?parent=414"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/product_brand?post=414"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/product_cat?post=414"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pto-stone-crusher.com\/nl\/wp-json\/wp\/v2\/product_tag?post=414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}