Planetary Wheel Drive for Mining Wheel Dozers
The planetary wheel drive for mining wheel dozers is a specialized gearbox system engineered to optimize power transmission in heavy-duty earthmoving equipment. It employs a planetary gear arrangement, consisting of a central sun gear, surrounding planet gears, and an outer ring gear, to convert high-speed, low-torque input from the engine into low-speed, high-torque output at the wheels. This configuration enhances traction, efficiency, and maneuverability in demanding mining environments, such as quarries and open-pit operations, where wheel dozers must handle massive loads and uneven terrain.
The planetary wheel drive for mining wheel dozers is a specialized gearbox system engineered to optimize power transmission in heavy-duty earthmoving equipment. It employs a planetary gear arrangement, consisting of a central sun gear, surrounding planet gears, and an outer ring gear, to convert high-speed, low-torque input from the engine into low-speed, high-torque output at the wheels. This configuration enhances traction, efficiency, and maneuverability in demanding mining environments, such as quarries and open-pit operations, where wheel dozers must handle massive loads and uneven terrain. Renowned for its compact design and exceptional resilience, the planetary wheel drive minimizes downtime by withstanding extreme loads, vibrations, and abrasive conditions typical in mining applications.

Planetary Wheel Drive Gearbox 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 |
Mining Wheel Dozer Wheel Drive Planetary Gearbox Advantages
- Enhanced Torque Conversion
This planetary wheel drive gearbox efficiently transforms high-speed, low-torque engine input into low-speed, high-torque output, ensuring superior traction and maneuverability on uneven mining terrain, which is critical for handling massive loads without compromising performance. - Superior Durability and Reliability
Designed to withstand extreme loads, vibrations, and abrasive conditions prevalent in mining sites, the planetary system minimizes equipment downtime and extends operational lifespan, thereby reducing maintenance costs and enhancing overall productivity. - Even Load Distribution
By employing a configuration of sun, planet, and ring gears, it distributes mechanical stress uniformly across multiple contact points, which significantly reduces wear and tear under heavy-duty applications like dozing in quarries or open-pit mines. - High Efficiency and Compact Design
The compact structure allows for space-saving integration into wheel dozers while achieving high transmission ratios and efficiency, leading to improved fuel economy and better performance in confined mining spaces without sacrificing power output. - Smooth Shifting and Precision
Featuring consistent planetary powershift mechanisms, it enables seamless gear transitions and precise control, which is vital for mining operations requiring rapid adjustments to speed and torque, ultimately boosting operator safety and machine responsiveness. - Resilience in Harsh Environments
Engineered for peak bearing capacity and resilience against environmental stressors such as dust and extreme temperatures in mining, this wheel drive planetary gearbox ensures reliable long-term operation, contributing to higher uptime and lower total ownership costs for wheel dozers.

Planetary Wheel Drive Gearbox Application Areas
- Mining Industry
In the mining sector, planetary wheel drive gearboxes are essential for powering wheel dozers, excavators, and bucket wheel drives, enabling efficient handling of heavy loads in harsh environments like open-pit mines and quarries, where they ensure reliable performance under extreme vibrations and abrasive conditions. - Construction Equipment
These planetary gearboxes are widely utilized in construction machinery such as loaders, graders, and compactors, offering superior torque conversion for maneuvering on uneven terrain, which enhances productivity and durability in building sites and infrastructure projects requiring precise power distribution. - Agricultural Machinery
Planetary wheel drives play a crucial role in tractors and harvesting equipment, delivering high torque at low speeds to optimize traction in fields, thereby improving fuel efficiency and operational reliability for tasks like plowing, tilling, and crop transportation in diverse farming conditions. - Robotics and Automation
In robotics and automated systems, these planetary gear reducers facilitate precise motion control and compact integration, supporting high-torque applications in assembly lines and industrial robots, which ensures accuracy, reduced backlash, and enhanced efficiency in manufacturing and packaging processes. - Automotive Systems
Employed in automotive transmissions and drive systems, wheel drive gearboxes enable smooth gear shifting and torque multiplication, contributing to improved vehicle performance, fuel economy, and handling in passenger cars, trucks, and off-road vehicles across the transportation sector. - Material Handling Equipment
These planetary gearboxes are integral to cranes, conveyors, and forklifts in material handling operations, providing robust power transmission for lifting and moving heavy loads in warehouses and logistics centers, thereby minimizing downtime and maximizing safety in industrial environments.
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Wheel Drive Planetary Gearbox Troubleshooting
- Overheating Issues
Monitor temperature during operation; overheating often stems from insufficient lubrication, overload, or poor ventilation. Solutions include checking and replenishing lubricant levels, ensuring proper cooling systems, and reducing operational loads to prevent thermal damage and maintain efficiency in demanding environments. - Excessive Noise and Vibration
Unusual sounds or vibrations indicate misalignment, worn gears, or bearing failures. Inspect for loose components, realign shafts if necessary, replace damaged parts, and balance the system to restore smooth operation and prevent further mechanical degradation. - Lubricant Leaks
Leaks commonly result from damaged seals, gaskets, or overfilled reservoirs. Identify leak sources through visual inspection, replace faulty seals, clean affected areas, and verify lubricant quality to avoid contamination and ensure optimal gearbox performance under high-stress conditions. - Gear Wear or Scoring
Wear patterns on gears signal inadequate lubrication, misalignment, or abrasive contaminants. Conduct regular inspections, apply appropriate lubricants, realign components, and filter contaminants to mitigate scoring, thereby prolonging gear life and enhancing torque transmission reliability. - Misalignment Problems
Shaft or component misalignment leads to uneven load distribution and premature failure. Use precision tools to measure alignment, adjust mounting as required, and secure all fasteners to correct deviations, improving overall stability and operational efficiency in wheel drive applications. - Bearing Failures
Bearings may fail due to overload, contamination, or lack of maintenance, causing operational halts. Inspect for wear signs, clean and lubricate regularly, replace defective bearings promptly, and monitor load conditions to prevent failures and ensure sustained gearbox functionality.

Additional information
| Edited by | Yjx |
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