Planetary Wheel Drive Gearbox for Disc Harrows
The planetary wheel drive gearbox for disc harrows is a compact epicyclic gear system engineered for high torque multiplication and speed reduction, enabling efficient power transmission in agricultural machinery. In disc harrows, implements used for soil tillage by breaking up clods, incorporating residues, and leveling the ground, this wheel drive planetary gearbox typically integrates with wheel or hub drives to enhance propulsion, traction, and stability on uneven terrain during operations like secondary cultivation or seedbed preparation.
The planetary wheel drive gearbox for disc harrows is a compact epicyclic gear system engineered for high torque multiplication and speed reduction, enabling efficient power transmission in agricultural machinery. It features a central sun gear surrounded by orbiting planet gears mounted on a carrier, all enclosed within an outer ring gear, which collectively provide superior torque density and load-bearing capacity while maintaining a space-saving design. In disc harrows, implements used for soil tillage by breaking up clods, incorporating residues, and leveling the ground, this wheel drive planetary gearbox typically integrates with wheel or hub drives to enhance propulsion, traction, and stability on uneven terrain during operations like secondary cultivation or seedbed preparation.

Planetary Wheel Drive Dimensions
Technical Definitions
| Symbols | Units of measurement | Description |
| i | - | Reduction ratio |
| T2max | [Nm] | Maximum output torque |
| T2p | [Nm] | Peak output torque |
| T2maxint | [Nm] | Maximum intermittent torque |
| T2cont | [Nm] | Continuous output torque |
| Pcont | [kW] | Maximum continuous power |
| Pint | [kW] | Maximum intermittent power |
| n1max | [rpm] | Maximum input speed |
| n2max | [rpm] | Maximum output speed |
GR 80

| Type | Motor disp. [cc] | Total disp. [cc] | i | Torque | Speed n2max | Power | |||||||
| T2cont | T2maxint | T2p | Pcont [kW] | Pint [kW] | |||||||||
| [Nm] | Δp [bar] | [Nm] | Δp [bar] | [Nm] | Δp [bar] | [rpm] | portata flow [l/min] | ||||||
| GR80-MR50 | 51,6 | 269,9 | 5,23 | 470 | 145 | 570 | 175 | 630 | 205 | 115 | 30 | 5,5 | 7 |
| GR80-MR80 | 80,3 | 420,0 | 800 | 145 | 960 | 175 | 1060 | 205 | 68 | 30 | 5,5 | 7 | |
| GR80-MR100 | 99,8 | 522,0 | 800 | 115 | 1000 | 145 | 1310 | 205 | 55 | 30 | 5,5 | 7 | |
| GR80-MR125 | 125,7 | 657,4 | 800 | 95 | 1000 | 120 | 1500 | 190 | 45 | 30 | 5,5 | 7 | |
| GR80-MR160 | 159,6 | 834,7 | 800 | 75 | 1000 | 95 | 1500 | 145 | 33 | 30 | 5 | 7 | |
| GR80-MR200 | 199,8 | 1045,0 | 800 | 60 | 1000 | 75 | 1500 | 115 | 26 | 30 | 5 | 7 | |
| GR80-MR250 | 249,3 | 1303,8 | 800 | 50 | 1000 | 60 | 1500 | 95 | 21 | 30 | 4,5 | 6 | |
GR 200

| Type | Motor disp. [cc] | Total disp. [cc] | i | Torque | Speed n2max | Power | |||||||
| T2cont | T2maxint | T2p | Pcont [kW] | Pint [kW] | |||||||||
| [Nm] | Δp [bar] | [Nm] | Δp [bar] | [Nm] | Δp [bar] | [rpm] | portata flow [l/min] | ||||||
| GR200-MR50 | 51,6 | 319,9 | 6,20 | 560 | 145 | 670 | 175 | 740 | 205 | 98 | 30 | 5,5 | 7 |
| GR200-MR80 | 80,3 | 497,9 | 950 | 145 | 1150 | 175 | 1250 | 205 | 58 | 30 | 5,5 | 7 | |
| GR200-MR100 | 99,8 | 618,8 | 1180 | 145 | 1420 | 175 | 1560 | 205 | 46 | 30 | 5,5 | 7 | |
| GR200-MR125 | 125,7 | 779,3 | 1450 | 145 | 1750 | 175 | 1920 | 205 | 38 | 30 | 5,5 | 7 | |
| GR200-MR160 | 159,6 | 989,5 | 1600 | 125 | 2100 | 165 | 2450 | 205 | 29 | 30 | 5 | 7 | |
| GR200-MR200 | 199,8 | 1238,8 | 1600 | 100 | 2150 | 135 | 2500 | 165 | 23 | 30 | 5 | 7 | |
| GR200-MR250 | 249,3 | 1545,7 | 1600 | 80 | 2150 | 105 | 2500 | 135 | 18 | 30 | 4,5 | 6 | |
| GR200-MR315 | 315,7 | 1957,3 | 1600 | 65 | 2150 | 85 | 2500 | 110 | 15 | 30 | 4 | 5 | |
| GR200-MR375 | 372,6 | 2310,1 | 1600 | 55 | 2150 | 70 | 2500 | 90 | 12 | 30 | 3,5 | 4,5 | |
EH 210

| Type | Weight | Oil quantity | i (da÷a / From÷to) | T2max [Nm] | n1max [rpm] | ||||
| EH 212 | EH 213 | EH 212 | EH 213 | EH 212 | EH 213 | ||||
| EH 210 S | 35 | 40 | 0.8 | 1 | 11 ÷ 29 | 41 ÷ 129 | 3950 | 3500 | |
| EH 210 SC | |||||||||
| EH 210 PD | - | - | |||||||
EH 240

| Type | Weight | Oil quantity | i (da÷a / From÷to) | T2max [Nm] | n1max [rpm] | ||||
| EH 242 | EH 243 | EH 242 | EH 243 | EH 242 | EH 243 | ||||
| EH 240 S | 35 | 40 | 0.8 | 1 | 12 ÷ 31 | 45 ÷ 135 | 5600 | 3500 | |
| EH 240 SC | |||||||||
| EH 240 PD | - | - | |||||||
EH 350

| Type | Weight | Oil quantity | i (da÷a / From÷to) | T2max [Nm] | n1max [rpm] | ||||
| EH 352 | EH 353 | EH 352 | EH 353 | EH 352 | EH 353 | ||||
| EH 350 S | 55 | 60 | 1 | 1.2 | 15 ÷ 31 | 52 ÷ 135 | 7200 | 3500 | |
| EH 350 PD | |||||||||
EH 610

| Type | Weight | Oil quantity | i (da÷a / From÷to) | T2max [Nm] | n1max [rpm] | ||||
| EH 612 | EH 613 | EH 612 | EH 613 | EH 612 | EH 613 | ||||
| EH 610 S | 60 | 70 | 1.2 | 1.5 | 12 ÷ 31 | 47 ÷ 138 | 13500 | 3500 | |
| EH 610 PD | |||||||||
EH 910

| Type | Weight | Oil quantity | i (da÷a / From÷to) | T2max | n1max | |
| EH 913 | EH 913 | EH 913 | [Nm] | [rpm] | ||
| EH 910 S | 130 | 1 | 47 ÷ 131 | 24200 | 3500 | |
| EH 910 PD | ||||||
S Version

| Size | Dimensions | ||||||||||
| D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | L1 | L2 | L3 | |
| EH 210 S | 230 | 200 | 180 h9 | 190 h9 | 210 | 229.5 | M10 n°8 | M10 n°8 | 253 | 73 | 180 |
| EH 240 S | 230 | 200 | 180 h9 | 190 h9 | 210 | 229.5 | M10 n°8 | M10 n°8 | 253 | 73 | 180 |
| EH 350 S | 270 | 230 | 190 h8 | 200 h7 | 240 | 280 | M16 n°8 | M16 n°8 | 242 | 107 | 178 |
| EH 610 S | 260 | 230 | 190 f7 | 220 h7 | 260 | 286 | M16 n°12 | M16 n°16 | 243 | 72 | 171 |
| EH 910 S | 330 | 300 | 270 f7 | 280 h7 | 350 | 370 | M16 n°18 | M16 n°18 | 368 | 115 | 253 |
PD Version

| Size | Dimensions | ||||||||||
| D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | L1 | L2 | L3 | |
| EH 210 PD | 230 | 200 | 180 h9 | 160.8 f8 | 205 | 240 | M10 (8x) | M18x1.5 (6x) | 210 | 140 | 70 |
| EH 240 PD | 230 | 200 | 180 h9 | 160.8 f8 | 205 | 240 | M10 (8x) | M18x1.5 (6x) | 210 | 140 | 70 |
| EH 350 PD | 240 | 209.55 | 177.8 h8 | 200 h7 | 241.3 | 280 | 5/8"-11 UNC (6x) | 5/8"-19 UNF (9x) | 285 | 107 | 178 |
| EH 610 PD | 260 | 230 | 190 f7 | 220 h7 | 275 | 310 | M16 (12x) | M20x1.5 (8x) | 293 | 72 | 221 |
| EH 910 PD | 330 | 300 | 270 f7 | 280 h7 | 335 | 375 | M16 (18x) | M22x1.5 (10x) | 368 | 115 | 253 |
Disc Harrow Planetary Wheel Drive Gearbox Features
- High Torque Density and Multiplication
This planetary wheel drive gearbox excels in delivering exceptional torque density, allowing for efficient multiplication of input torque while reducing speed, which is crucial for disc harrows navigating tough soil conditions and heavy loads during tillage, ensuring consistent power transfer without excessive energy loss. - Compact and Space-Saving Design
Engineered with a central sun gear surrounded by orbiting planet gears within an outer ring, the compact structure minimizes space requirements, making it ideal for integration into disc harrow wheel drives where equipment size and weight must be optimized for maneuverability in the field. - Robust Durability for Severe Duty Applications
Constructed from high-strength alloy steels, the planetary wheel drive withstands extreme operational stresses in disc harrows, such as uneven terrain and continuous heavy-duty use, providing long-term reliability and reduced maintenance needs in demanding agricultural environments. - Efficient Power Transmission and Speed Reduction
Featuring an epicyclic gear train, it ensures smooth and efficient power transmission from hydraulic or electric motors to the wheels, enabling precise speed reduction that enhances traction and stability for disc harrows during soil preparation and residue incorporation tasks. - Modular and Customizable Configurations
Available in various modular designs with options for shaft, wheel outputs, and slewing capabilities, this wheel drive planetary gearbox can be highly customized to fit specific disc harrow models, accommodating diverse operational requirements and improving overall machinery versatility in farming applications. - Enhanced Strength and Load Distribution
The planetary arrangement distributes loads evenly across multiple gears, making it stronger than traditional spur gearboxes and better suited for disc harrows that encounter high-impact forces, thereby prolonging component life and maintaining performance under variable field conditions.

Planetary Wheel Drive Applications
- Agricultural Industry
In the agricultural sector, wheel drive planetary gearboxes are utilized in equipment such as tractors, combines, harvesters, and feed mixers, providing high torque density and efficient power transfer to handle rugged terrains and heavy loads, thereby improving productivity in soil tillage, crop harvesting, and livestock feeding operations. - Construction Industry
These wheel drive gearboxes play a critical role in construction machinery, including excavators, loaders, and bulldozers, where they facilitate wheel drives, track drives, and slew mechanisms, ensuring robust torque multiplication and precise control for tasks like earthmoving, digging, and material relocation on challenging job sites. - Mining Industry
Within mining operations, planetary wheel drive gearboxes are integrated into heavy-duty equipment such as haul trucks, drills, and mineral processing machines, delivering exceptional resilience and compact construction to withstand extreme conditions, high loads, and continuous use in extraction and material transport processes. - Forestry Industry
Forestry applications employ these planetary gearboxes in machinery like feller bunchers, tracked harvesters, forwarders, and log handling equipment, enabling high torque output and reliable performance for operations including tree felling, debarking, sawing, and timber transportation in dense and uneven woodland environments. - Material Handling Industry
In material handling systems, planetary wheel drives are key to automated guided vehicles (AGVs), forklifts, and warehouse shuttles, offering compact integration and high radial load capacity to support efficient intralogistics, precise movement, and heavy-duty lifting in warehouses, distribution centers, and industrial facilities. - Renewable Energy Industry
These planetary gear reducers are applied in renewable energy setups, particularly in wind turbine slew drives and solar tracking systems, providing optimized torque density and customization for reliable rotation and positioning, which enhances energy capture efficiency and reduces maintenance in harsh outdoor conditions.
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Choose the Right Planetary Wheel Drive for Disc Harrows
- Assess Torque Requirements and Load Capacity
Begin by evaluating the maximum torque needed based on the disc harrow's operational demands, such as soil density, tillage depth, and attachment weight, to ensure the gearbox can handle heavy loads without failure, thereby preventing downtime and extending equipment lifespan in rugged field conditions. - Determine the Optimal Gear Reduction Ratio
Calculate the required speed reduction ratio to match the input from hydraulic motors or tractors with the desired wheel output speed, enabling precise control during disc harrowing tasks like clod breaking and residue incorporation, while maintaining efficiency and minimizing energy consumption. - Evaluate Size and Space Constraints
Consider the compact design of the planetary gearbox to ensure it fits seamlessly into the wheel drive assembly of the disc harrow, optimizing overall machinery dimensions for better maneuverability, transportability, and integration without compromising on torque density or structural integrity. - Factor in Environmental and Durability Conditions
Select a gearbox constructed from high-strength materials that can withstand harsh agricultural settings, including dust, moisture, and varying temperatures, to provide robust performance and reduced maintenance needs during prolonged disc harrowing operations in diverse terrains. - Check Compatibility with Power Sources
Ensure the planetary gearbox reducer aligns with the tractor's horsepower and input speed specifications, as well as compatibility with hydraulic or electric drives, to achieve seamless power transfer and enhance traction for disc harrows used in seedbed preparation and soil leveling tasks.

Additional information
| Edited by | Yjx |
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