Planetary Wheel Drive Gearbox for Mining Wheel Loaders
The planetary wheel drive gearbox for mining wheel loaders is a sophisticated transmission system engineered to deliver high torque and efficient power transmission in demanding mining environments. It employs an epicyclic gear configuration, comprising a central sun gear, multiple planet gears mounted on a carrier, and an outer ring gear, which facilitates torque multiplication and speed reduction while maintaining a compact, hub-mounted design. This arrangement distributes loads evenly across the gears, enhancing durability and resistance to wear under heavy loads and uneven terrain typical in mining operations.
The planetary wheel drive gearbox for mining wheel loaders is a sophisticated transmission system engineered to deliver high torque and efficient power transmission in demanding mining environments. It employs an epicyclic gear configuration, comprising a central sun gear, multiple planet gears mounted on a carrier, and an outer ring gear, which facilitates torque multiplication and speed reduction while maintaining a compact, hub-mounted design. This arrangement distributes loads evenly across the gears, enhancing durability and resistance to wear under heavy loads and uneven terrain typical in mining operations.
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 |
Mining Wheel Loader Wheel Drive Planetary Gearbox Benefits
- High Torque Capacity
This wheel drive planetary gearbox excels in delivering exceptional torque multiplication through its multi-stage planetary configuration, allowing wheel loaders to handle heavy payloads and steep inclines in mining operations without straining the engine, thereby ensuring reliable power transmission under extreme loads and improving overall operational efficiency. - Compact and Lightweight Design
By utilizing a nested arrangement of sun, planet, and ring gears, the planetary system achieves a space-saving footprint that reduces the overall weight of the wheel loader, facilitating better maneuverability in confined mining sites while maintaining structural integrity and minimizing material usage. - Superior Efficiency
The design promotes high mechanical efficiency by distributing load evenly across multiple planet gears, resulting in minimal energy loss during power transfer, which optimizes fuel consumption and extends the operational range of mining wheel loaders in remote or resource-intensive settings. - Enhanced Durability and Reduced Maintenance
Engineered to withstand shock loads, vibrations, and abrasive conditions prevalent in mining, this planetary gearbox features robust components that lower wear rates, decrease downtime for repairs, and extend service intervals, ultimately reducing long-term ownership costs for operators. - Improved Fuel Economy
Through precise torque management and reduced frictional losses, the planetary wheel drive gearbox contributes to better fuel efficiency in wheel loaders, enabling prolonged operation on a single tank and supporting sustainable mining practices by lowering emissions and operational expenses. - Boosted Productivity
This technology ensures seamless integration with wheel assemblies for optimal traction and speed control, allowing mining wheel loaders to perform tasks like material hauling and terrain navigation more effectively, thereby increasing throughput and enhancing site-wide productivity in high-demand environments.
Planetary Wheel Drive Gearbox Uses
- Material Handling in Mining Operations
Employed in mining wheel loaders, this planetary wheel drive facilitates efficient torque transmission to wheels, enabling the handling of substantial ore loads and navigation over rough terrain, which enhances productivity in underground and open-pit mining by providing reliable propulsion and minimizing slippage during heavy-duty excavation tasks. - Construction Equipment Propulsion
Integrated into excavators and motor graders, the planetary wheel drive gearbox delivers precise speed reduction and torque multiplication, supporting tasks such as earthmoving and grading on construction sites, where its compact structure allows for better maneuverability in confined spaces while withstanding high shock loads. - Agricultural Machinery Applications
Utilized in harvesters and feed mixers, this planetary gearbox ensures smooth power delivery for operations like crop harvesting and soil tilling, offering high efficiency in torque distribution that reduces fuel consumption and extends equipment lifespan in variable field conditions. - Forestry Equipment Operations
In forestry machines such as log loaders and forwarders, the wheel drive gearbox provides robust torque for traversing uneven wooded terrain and handling timber loads, with its durable design resisting environmental abrasives and enabling sustained performance in remote logging sites. - Off-Highway Truck and Dozer Functionality
Applied in off-highway trucks and bulldozers for mining and construction, it achieves double speed reduction through planetary gearsets, facilitating heavy payload transport and earth pushing with enhanced stability and load-bearing capacity under extreme operational stresses. - Skid Steer Loader Maneuverability
Incorporated in skid steer loaders for versatile site work, the planetary gear reducer changes drive torque and speed, allowing quick directional shifts and efficient material handling in landscaping or small-scale mining, while its coaxial layout optimizes space and improves overall machine responsiveness.
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| Planetary Wheel Drive for Mining Wheel Dozers | Planetary Wheel Drive for Motor Graders |
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| Planetary Wheel Drive for Combine Harvesters | Planetary Wheel Drive for Wheel Cranes |
Planetary Wheel Drive vs. Planetary Track Drive
| Aspect | Planetary Wheel Drive | Planetary Track Drive |
|---|---|---|
| Design Adaptation | Optimized for wheeled vehicles with a compact, coaxial layout integrating directly into wheel hubs for efficient power transfer to tires. | Engineered for tracked systems, focusing on torque delivery to sprockets or tracks, often with higher reduction ratios to handle continuous track motion. |
| Primary Applications | Commonly used in mining wheel loaders, agricultural tractors, forklifts, excavators, and motor graders for tasks requiring mobility on varied surfaces. | Employed in bulldozers, tanks, railway locomotives, combines, and heavy excavators for operations on soft, uneven, or slippery terrains demanding superior grip. |
| Torque Capacity | Provides high torque multiplication, typically up to 100,000 Nm, suitable for heavy payloads but generally lower than track drives in extreme load scenarios. | Offers superior torque transmission, often exceeding wheel drives, with enhanced capabilities for extreme stresses and higher reduction ratios in demanding conditions. |
| Efficiency | Achieves high mechanical efficiency through even load distribution across multiple planet gears, minimizing energy loss and optimizing fuel consumption in wheeled machinery. | Maintains good efficiency but may experience slightly higher frictional losses due to track friction; prioritizes power over peak efficiency in tracked applications. |
| Compactness | Features a space-saving nested gear arrangement, reducing overall vehicle footprint and enabling better integration in confined spaces for wheeled equipment. | Compact design adapted for track systems, though often bulkier to accommodate higher torque demands and integration with track assemblies. |
| Weight | Lighter overall due to minimized material usage, contributing to improved vehicle agility and reduced operational weight in wheeled configurations. | Heavier construction to withstand greater loads and stresses, which can increase the total weight of tracked vehicles but enhances stability. |
| Maneuverability | Enhances agility and quick directional changes in wheeled vehicles, ideal for navigating tight mining sites or construction areas with variable speeds. | Supports stable, controlled movement in tracked machinery, but typically offers less agility compared to wheels, focusing on straight-line propulsion. |
| Traction | Relies on tire contact for traction, effective on firm surfaces but may slip on loose or wet terrain without additional aids like differentials. | Provides exceptional traction via continuous tracks, excelling on soft, muddy, or uneven grounds where wheels would falter, ensuring reliable propulsion. |
| Durability in Harsh Environments | Robust against shock loads and abrasives, with reduced wear in mining or construction, but may require more frequent checks in highly abrasive wheeled operations. | Highly durable under extreme conditions like forestry or military use, resisting vibrations and impacts better due to track distribution of forces. |
| Speed Range | Offers a wide output speed range for variable operations, allowing faster travel speeds in wheeled loaders for efficient site-to-site movement. | Focuses on lower speeds with high torque for precise control, suitable for slow, powerful tasks in tracked equipment like earthmoving or hauling. |
| Load Distribution | Distributes loads evenly across planet gears for balanced performance, reducing backlash and extending lifespan in wheeled drive systems. | Even load sharing with added emphasis on handling uneven track loads, providing greater stability and reduced component stress in tracked setups. |
| Cost | Generally more cost-effective for standard wheeled applications due to simpler integration and lower material requirements in production. | Higher initial cost owing to specialized components for track integration and enhanced torque handling, but offers long-term savings in rugged uses. |
| Maintenance Requirements | Easier access for maintenance in wheel hubs, with lower downtime; features like sealed units reduce contamination in mining environments. | Requires more specialized maintenance for track components, but planetary design minimizes gear wear, leading to extended service intervals. |
| Noise Levels | Operates with lower noise due to precise gear meshing and compact design, beneficial in noise-sensitive construction or agricultural settings. | May produce higher operational noise from track movement, though the gearbox itself maintains low internal noise through efficient planetary gearing. |
| Backlash | Exhibits minimal backlash for precise control in wheeled machinery, improving responsiveness in tasks like material handling or grading. | Designed with low backlash to ensure accurate torque delivery in tracked systems, critical for safety in high-load operations like bulldozing. |
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| Planetary Wheel Drive | Planetary Track Drive |
Additional information
| Edited by | Yjx |
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