Planetary Track Drive Gearbox for Loaders
The planetary track drive gearbox for loaders is a compact, high-torque transmission system integral to tracked heavy machinery, such as compact track loaders and backhoe loaders. It functions by converting input power from a hydraulic motor or engine into mechanical energy, delivering amplified torque to propel the machine’s tracks across challenging terrains, including construction sites, mining operations, and agricultural fields. This planetary gearbox enables precise control, efficient movement, and the handling of substantial loads while minimizing energy loss and operational downtime.
The planetary track drive gearbox for loaders is a compact, high-torque transmission system integral to tracked heavy machinery, such as compact track loaders and backhoe loaders. It functions by converting input power from a hydraulic motor or engine into mechanical energy, delivering amplified torque to propel the machine's tracks across challenging terrains, including construction sites, mining operations, and agricultural fields. This planetary gearbox enables precise control, efficient movement, and the handling of substantial loads while minimizing energy loss and operational downtime.
At its core, the system operates on planetary gearing principles, comprising a central sun gear that receives rotational input, multiple planet gears orbiting the sun and meshing with it, and an outer ring gear that captures the motion to drive the output shaft. The planet gears are held by a carrier assembly, allowing for even load distribution and multiple gear ratios in a single, space-efficient unit. In loaders, the planetary gearbox integrates directly with the final drive, transferring power to the tracks to support tasks like digging, lifting, and material transport.

Planetary Track Drive Dimensions
EH 10000 SC

| Equipped with Hydraulic motor | |||||
| VOAC F12-60 | X = 146 | VOAC F12-80 | X = 157 | VOAC F12-110 | X = 175 |
| SAUER 51C060 | X = 207 | SAUER 51C080 | X = 212 | SAUER 51C110 | X = 219 |
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 100000 | 512 | 1080 | 410 | 6.5 | 1500÷460 | 42÷17 | 300 |
| Effective Reduction Ratio | |||||||
| 76.1 | 86 | 101.3 | 114.4 | 124.2 | 132.4 | 140.2 | 153.9 |
| 173.7 | 185.4 | 209.3 | |||||
EH 13000 SC TRACK

| Equipped with Hydraulic motor | |||||
| VOAC F12-80 | X = 157 | VOAC F12-110 | X = 175 | ||
| SAUER 51C080 | X = 212 | SAUER 51C110 | X = 219 | SAUER 51C160 | X = 240 |
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 150000 | 512 | 1080 | 440 | 7.5 | 2200÷650 | 42÷17 | 300 |
| Effective Reduction Ratio | |||||||
| 76.1 | 86 | 101.3 | 114.4 | 124.2 | 131 | 140.2 | 149 |
| 168.1 | 175.3 | 197.8 | 214.8 | 242.3 | |||
EH 16000 SC

| Equipped with Hydraulic motor | |||||
| VOAC F12-110 | X = 175 | VOAC F11-150 CETOP | X = 307 | ||
| SAUER 51C110 | X = 219 | SAUER 51C160 | X = 240 | ||
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 170000 | 765 | 1660 | 680 | 11.5 | 2200÷700 | 50÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 85.2 | 96.2 | 109.2 | 123.2 | 141.7 | 160 | 182.1 | 188.4 |
| 212.6 | 227.8 | 257.1 | |||||
EH 22000 SC

| Equipped with Hydraulic motor | |||||
| VOAC F11-150 CETOP | X = 307 | VOAC F11-250 | X = 431 | ||
| SAUER 51C160 | X = 239 | SAUER 51V250 | X = 460 | ||
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 240000 | 765 | 1660 | 880 | 15 | 2350÷950 | 50÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 86.6 | 97.6 | 112.6 | 127.1 | 142.7 | 151.9 | 161.1 | 168.1 |
| 182.3 | 211 | 223.3 | 252 | ||||
EH 26000 SC

| Equipped with Hydraulic motor | |||||
| VOAC F11-250 | X = 431 | ||||
| SAUER 51V250 | X = 460 | SAUER 51C160 | X = 239 | ||
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 280000 | 1080 | 2360 | 980 | 18 | 2500÷1100 | 50÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 86.6 | 97.6 | 112.6 | 127.1 | 142.7 | 151.9 | 161.1 | 168.1 |
| 182.3 | 211 | 223.3 | 252 | ||||
EH 33000 SC

| Equipped with Hydraulic motor | |||||
| VOAC F11-250 | X = 431 | ||||
| SAUER 51V250 | X = 460 | ||||
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 350000 | 1120 | 2550 | 1280 | 21 | 3550÷1350 | 40÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 86.6 | 97.6 | 112.6 | 127.1 | 142.7 | 151.9 | 161.1 | 182.3 |
| 211 | 223.3 | 252 | |||||
EH 33000 W

| Equipped with Hydraulic motor | |||||
| VOAC F11-250 | X = 431 | ||||
| SAUER 51V250 | X = 460 | ||||
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 350000 | 1120 | 2550 | 1280 | 25 | 3550÷1350 | 40÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 86.6 | 97.6 | 112.6 | 127.1 | 142.7 | 151.9 | 161.1 | 182.3 |
| 211 | 223.3 | 252 | |||||
EH 45000 SC

| Equipped with Hydraulic motor | |||||
| VOAC F11-250 | X = 431 | ||||
| SAUER 51V250 | X = 460 | ||||
| Different input execution available on demand. | |||||
| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 450000 | 1120 | 2550 | 1560 | 24 | 3750÷1500 | 40÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 85.2 | 95.9 | 110.7 | 132.3 | 140.3 | 158.8 | 183.8 | 219.6 |
EH 60000 SC

| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 685000 | 1380 | 3050 | 3120 | 50 | 4000÷1300 | 30÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 330.7 | 373.1 | 442.3 | |||||
EH 70000 SC

| Output dimension | |||||||
| Maximum output torque | Capacity of bearings | Weight without motor | Oil Quantity | Brake torque | Opening pressure | Max. brake pressure | |
| [ Nm ] | Cd dynamic [ kN ] | C0 static [ kN ] | [ kg ] | [ liters ] | [ Nm ] | [ bar ] | [ bar ] |
| 865000 | 1380 | 3050 | 3120 | 50 | 4000÷1700 | 30÷20 | 300 |
| Effective Reduction Ratio | |||||||
| 287 | 323.8 | 368.6 | 415.8 | 437.7 | 493.7 | ||
Advantages of Planetary Track Drive Gearbox for Loaders
1. High Torque Capacity
The planetary track drive gearbox excels in delivering exceptional torque multiplication, enabling loaders to handle substantial loads with ease. This feature is particularly beneficial in heavy-duty applications where the machinery must propel tracks over uneven terrain, ensuring consistent power transmission without slippage.
2. Compact and Space-Efficient Design
A primary advantage of the track drive planetary gearbox is its compact configuration, which allows for seamless integration into the limited space of the loader chassis without compromising power output. This design incorporates coaxial alignment of input and output shafts, facilitating a smaller footprint compared to traditional gearboxes.
3. Superior Efficiency and Energy Savings
The planetary track drive boasts mechanical efficiency often exceeding 95%, which translates to reduced energy consumption and lower operational costs for loaders. Through precise gearing arrangements involving sun, planet, and ring gears, it minimizes frictional losses and heat generation during power transmission.
4. Enhanced Durability and Reliability
Built with robust materials and advanced sealing mechanisms, the planetary gearbox provides outstanding durability in harsh conditions encountered by loaders, such as exposure to dust, moisture, and extreme temperatures. Its even load distribution across planetary components reduces wear and tear, ensuring reliable performance over extended periods with minimal maintenance requirements.
5. Versatile Gear Ratios for Adaptability
The planetary gear reducer supports a wide range of customizable gear ratios, allowing loaders to optimize speed and torque for diverse tasks, from high-speed travel to low-speed, high-torque lifting. This versatility enables multi-stage configurations that adapt to varying operational demands, such as switching between precise control in delicate maneuvers and powerful propulsion on steep inclines.
6. Low Backlash and Precise Control
Featuring minimal backlash due to its intricate planetary gearing system, the track drive planetary gear reducer ensures precise motion control in loaders, which is vital for accurate positioning during loading and unloading activities. This precision enhances operator safety and efficiency by reducing unintended movements, while the gearbox's high stiffness maintains stability under dynamic loads.

Track Drive Planetary Gearbox Application Fields
1. Construction Industry
In the construction sector, the planetary track drive gearbox is essential for powering tracked equipment such as excavators, bulldozers, and compact track loaders. It delivers high torque for navigating uneven terrains and handling heavy loads during site preparation, demolition, and earthmoving tasks. This gearbox enhances machine stability and reduces slippage, contributing to improved productivity and safety on job sites where durability under constant stress is paramount.
2. Mining Industry
The planetary track drive plays a critical role in mining operations by driving tracked vehicles like loaders and haul trucks in underground and open-pit environments. It withstands extreme conditions, including dust, vibrations, and heavy payloads, while providing precise control for material extraction and transport. This application minimizes downtime and optimizes energy efficiency, supporting continuous operations in resource-intensive settings.
3. Agriculture Industry
Within agriculture, the planetary gearboxx is integrated into tracked tractors and harvesters to facilitate soil tillage, planting, and crop management on soft or uneven fields. Its compact design and high torque output prevent soil compaction while enabling smooth maneuverability, thereby increasing yield efficiency and reducing fuel consumption in large-scale farming operations across varied landscapes.
4. Renewable Energy Sector
In renewable energy applications, such as solar tracking systems and wind turbine maintenance vehicles, the track drive planetary gear reducer ensures accurate positioning and mobility on rugged terrains. It supports the alignment of panels for optimal sunlight capture and facilitates access to remote installation sites, promoting sustainable energy production with its reliable, low-maintenance performance in environmentally sensitive areas.
5. Forestry Industry
The track drive planetary gearbox is vital in forestry for equipping tracked skidders, feller bunchers, and forwarders that operate in dense woodlands and steep slopes. It provides superior traction and torque for log extraction and transportation, resisting impacts from debris and moisture while enhancing operational safety and efficiency in sustainable timber harvesting practices.
6. Oil and Gas Industry
In the oil and gas field, the track drive gearbox powers tracked drilling rigs and pipeline maintenance vehicles, enabling stable movement over unstable grounds during exploration and extraction. Its robust construction handles high loads and corrosive elements, ensuring uninterrupted workflows and cost-effective performance in remote, harsh drilling locations worldwide.
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| Planetary Track Drive for Excavators | Planetary Track Drive for Harvesters |
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| Planetary Track Drive for Dump Trucks | Planetary Track Drive for Feller Bunchers |
Planetary Track Drive Gearbox Installation Steps
1. Prepare the Loader and Gearbox
Begin by ensuring the loader is securely parked on a stable surface with all hydraulic systems deactivated. Inspect the planetary gearbox for any shipping damage and verify compatibility with the loader’s specifications. Gather the necessary tools, fasteners, and mounting accessories as per the manual’s instructions to avoid delays during installation.
2. Inspect and Clean Mounting Surfaces
Thoroughly clean the mounting surfaces on both the loader and the gearbox to remove any dirt, grease, or debris. Inspect the surfaces for irregularities or damage that could interfere with proper alignment. A clean and even mounting surface ensures secure attachment and prevents misalignment, which can lead to premature wear or operational issues.
3. Align the Gearbox with the Loader’s Final Drive
Carefully position the planetary gear reducer to align it with the loader’s final drive assembly. Use alignment tools or dowel pins if necessary to ensure precise coaxial placement of the input and output shafts. Proper alignment is critical to prevent stress on the drivetrain, ensuring smooth power transmission and extending the lifespan of the gearbox and connected components.
4. Secure the Gearbox to the Loader
Attach the gearbox to the loader’s chassis or mounting bracket using the specified bolts and fasteners. Tighten the bolts in a crisscross pattern to evenly distribute the load and prevent distortion. Use a torque wrench to apply the recommended torque settings, ensuring the gearbox is firmly secured and minimizing the risk of loosening due to vibrations during operation.
5. Connect Hydraulic or Power Input Systems
Attach the input shaft of the gearbox to the loader’s hydraulic motor or engine. Ensure all couplings, fittings, and seals are properly installed and tightened to prevent leaks or misalignment. For hydraulic-driven systems, check the hydraulic fluid levels and inspect hoses for wear or damage to ensure smooth power transfer and optimal performance.
6. Test and Verify Operation
After installation, test the planetary gearbox by operating the loader at low speeds to ensure proper functionality. Check for abnormal noises, vibrations, or leaks during operation. Monitor the alignment, torque output, and fluid levels, making adjustments as necessary. Conduct a final inspection to confirm that the gearbox is securely mounted and functioning as intended before resuming regular operations.

Additional information
| Edited by | Yjx |
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