The planetary track drive gearbox, also known as a final drive or track drive planetary gearbox, is a critical component in heavy construction machinery such as bulldozers. It serves as the final stage in the power transmission system, converting high-speed, low-torque input from the engine or hydraulic motor into low-speed, high-torque output to propel the vehicle's tracks. This gearbox operates on the principles of epicyclic gearing, consisting of a central sun gear, multiple planet gears mounted on a carrier, and an outer ring gear.
In a bulldozer, the planetary gearbox is typically mounted on the drive sprocket or wheel, enabling precise control over track movement, including forward propulsion, reverse, and differential steering for maneuvers on uneven terrain. Advantages include enhanced durability against shock loads, improved efficiency through multiple load paths, and reduced maintenance compared to traditional bull gear systems. In bulldozers, this track drive planetary gearbox facilitates smooth power distribution to the tracks, supporting tasks like grading, pushing, and ripping while minimizing wear on components.

Wymiary napędu planetarnego
EH 10000 SC

| Wyposażony w silnik hydrauliczny |
| 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 |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 100000 | 512 | 1080 | 410 | 6.5 | 1500÷460 | 42÷17 | 300 |
| Efektywny współczynnik redukcji |
| 76.1 | 86 | 101.3 | 114.4 | 124.2 | 132.4 | 140.2 | 153.9 |
| 173.7 | 185.4 | 209.3 |
TOR EH 13000 SC

| Wyposażony w silnik hydrauliczny |
| VOAC F12-80 | X = 157 | VOAC F12-110 | X = 175 | | |
| SAUER 51C080 | X = 212 | SAUER 51C110 | X = 219 | SAUER 51C160 | X = 240 |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 150000 | 512 | 1080 | 440 | 7.5 | 2200÷650 | 42÷17 | 300 |
| Efektywny współczynnik redukcji |
| 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

| Wyposażony w silnik hydrauliczny |
| VOAC F12-110 | X = 175 | VOAC F11-150 CETOP | X = 307 | | |
| SAUER 51C110 | X = 219 | SAUER 51C160 | X = 240 | | |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 170000 | 765 | 1660 | 680 | 11.5 | 2200÷700 | 50÷20 | 300 |
| Efektywny współczynnik redukcji |
| 85.2 | 96.2 | 109.2 | 123.2 | 141.7 | 160 | 182.1 | 188.4 |
| 212.6 | 227.8 | 257.1 | | | | | |
EH 22000 SC

| Wyposażony w silnik hydrauliczny |
| VOAC F11-150 CETOP | X = 307 | VOAC F11-250 | X = 431 | | |
| SAUER 51C160 | X = 239 | SAUER 51V250 | X = 460 | | |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 240000 | 765 | 1660 | 880 | 15 | 2350÷950 | 50÷20 | 300 |
| Efektywny współczynnik redukcji |
| 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

| Wyposażony w silnik hydrauliczny |
| VOAC F11-250 | X = 431 | | | | |
| SAUER 51V250 | X = 460 | SAUER 51C160 | X = 239 | | |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 280000 | 1080 | 2360 | 980 | 18 | 2500÷1100 | 50÷20 | 300 |
| Efektywny współczynnik redukcji |
| 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

| Wyposażony w silnik hydrauliczny |
| VOAC F11-250 | X = 431 | | | | |
| SAUER 51V250 | X = 460 | | | | |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 350000 | 1120 | 2550 | 1280 | 21 | 3550÷1350 | 40÷20 | 300 |
| Efektywny współczynnik redukcji |
| 86.6 | 97.6 | 112.6 | 127.1 | 142.7 | 151.9 | 161.1 | 182.3 |
| 211 | 223.3 | 252 | | | | | |
EH 33000 W

| Wyposażony w silnik hydrauliczny |
| VOAC F11-250 | X = 431 | | | | |
| SAUER 51V250 | X = 460 | | | | |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 350000 | 1120 | 2550 | 1280 | 25 | 3550÷1350 | 40÷20 | 300 |
| Efektywny współczynnik redukcji |
| 86.6 | 97.6 | 112.6 | 127.1 | 142.7 | 151.9 | 161.1 | 182.3 |
| 211 | 223.3 | 252 | | | | | |
EH 45000 SC

| Wyposażony w silnik hydrauliczny |
| VOAC F11-250 | X = 431 | | | | |
| SAUER 51V250 | X = 460 | | | | |
| Różne wykonania wejściowe dostępne na żądanie. |
| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 450000 | 1120 | 2550 | 1560 | 24 | 3750÷1500 | 40÷20 | 300 |
| Efektywny współczynnik redukcji |
| 85.2 | 95.9 | 110.7 | 132.3 | 140.3 | 158.8 | 183.8 | 219.6 |
EH 60000 SC

| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 685000 | 1380 | 3050 | 3120 | 50 | 4000÷1300 | 30÷20 | 300 |
| Efektywny współczynnik redukcji |
| 330.7 | 373.1 | 442.3 | | | | | |
EH 70000 SC

| Wymiar wyjściowy |
| Maksymalny moment wyjściowy | Nośność łożysk | Waga bez silnika | Ilość oleju | Moment obrotowy hamulca | Ciśnienie otwarcia | Maksymalne ciśnienie hamulca |
| [ Nm ] | Cd dynamiczny [ kN ] | C0 statyczny [ kN ] | [kg] | [ litrów ] | [ Nm ] | [ bar ] | [ bar ] |
| 865000 | 1380 | 3050 | 3120 | 50 | 4000÷1700 | 30÷20 | 300 |
| Efektywny współczynnik redukcji |
| 287 | 323.8 | 368.6 | 415.8 | 437.7 | 493.7 | | |
Benefits of Planetary Track Drive Gearbox for Bulldozers
- Enhanced Torque Output and Power Transmission
The planetary track drive gearbox delivers exceptional torque multiplication, a critical factor for bulldozers operating on tough terrains. It effectively converts high-speed input from the engine into low-speed, high-torque output, making it easier for the machine to push, pull, and maneuver heavy loads. By utilizing epicyclic gearing, this gearbox ensures even power distribution to the tracks, improving traction and stability during demanding earthmoving tasks. - Compact Design and Space Efficiency
The track drive planetary gearbox is valued for its compact and space-saving design, which integrates seamlessly into the bulldozer’s undercarriage. Its high gear reduction ratios are achieved within a smaller footprint compared to traditional systems, contributing to better weight distribution. This compact design also lowers the machine’s center of gravity, enhancing stability and balance on uneven or sloping terrain. - Increased Durability and Reliability
Constructed to withstand the harsh conditions of heavy construction work, the planetary track drive is highly durable. It features multiple planet gears that evenly distribute stress, reducing wear on individual components and prolonging the lifespan of the entire system. This robust design minimizes the impact of shock loads, ensuring consistent operation in demanding environments. - Improved Efficiency and Fuel Savings
The track drive gearbox enhances bulldozer efficiency by optimizing power transmission and minimizing energy losses. Its epicyclic design reduces friction, enabling the engine to operate at optimal speeds while consuming less fuel. This efficient power transfer supports prolonged operations without significantly increasing operational costs. Moreover, the gearbox provides variable speed control, allowing the bulldozer to adapt seamlessly to changes in load and terrain. - Superior Maneuverability and Control
With its ability to provide precise differential steering, the planetary gearbox gives operators exceptional control over the bulldozer’s movements. It allows independent adjustment of track speeds, enabling tighter turns and improved responsiveness on challenging or confined job sites. This gearbox integrates seamlessly with hydrostatic systems, offering infinite speed variations without the need for gear shifts. - Zredukowane wymagania konserwacyjne
The modular design of the track drive planetary gear reducer simplifies maintenance and reduces downtime. Its sealed components prevent the ingress of particles, extending service intervals and minimizing the need for frequent inspections. The gearbox’s design makes it easy to replace worn parts without requiring extensive disassembly, lowering labor costs and ensuring quicker repairs.

Zastosowania przekładni planetarnych z napędem gąsienicowym
- Branża budowlana
In construction, the planetary track drive gearbox powers heavy equipment like bulldozers, excavators, and earth-moving machines. Its high torque output and precise control enable efficient operation on rugged terrains. This gearbox enhances durability and load-bearing capacity, ensuring reliable performance in critical tasks such as digging, grading, and site preparation. Its robust design allows machinery to handle extreme loads effectively, making it indispensable for construction projects. - Przemysł górniczy
The mining sector extensively employs the track drive planetary gearbox in equipment like haul trucks, drilling rigs, and underground loaders. It delivers the exceptional torque multiplication required for managing extreme loads and harsh conditions in mining operations. This gearbox ensures smooth and reliable power transmission, enhancing safety and efficiency in tasks such as phosphate extraction, ore processing, and steel milling. Its ability to withstand heavy-duty applications makes it ideal for mining. - Agricultural Industry
The planetary track drive is vital in agriculture, powering tractors, harvesters, and irrigation systems for optimal field performance. It provides variable speed control and high torque output, essential for activities like plowing, planting, and harvesting on uneven terrain. Additionally, the gearbox supports processes such as sugarcane handling and crop transportation, improving fuel efficiency and minimizing soil compaction. This ensures sustainable farming practices and increased productivity. - Bulk Material Handling Industry
The track drive gearbox is critical in bulk material handling, powering equipment like conveyors, mixers, and drum systems in industries such as cement and asphalt production. It ensures consistent torque delivery for transporting heavy aggregates and powders efficiently. This gearbox excels in continuous operations, offering resistance to wear caused by abrasive materials and reducing the risk of overloads. Its durability ensures smooth functioning in material handling processes. - Przemysł leśny
In forestry, the track drive planetary gear reducer powers equipment such as log skidders, harvesters, and wood chippers, ensuring high torque output for demanding operations. It provides precise control and variable speed adjustments, enabling efficient cutting, hauling, and processing of timber. This gearbox enhances the reliability of forestry machinery, allowing continuous operation in rugged and remote environments. Its durability and efficiency contribute to sustainable logging and wood processing practices.
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| Planetary Track Drive for Forestry Dozers | Planetary Track Drive for Sprayers |
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| Planetary Track Drive for Large Excavators | Napęd gąsienicowy planetarny do ładowarek |
Common Troubleshooting of Planetary Track Drive
- Overheating Issues
Overheating in the planetary track drive gearbox often results from insufficient lubrication or overloaded operations in heavy machinery like bulldozers. To troubleshoot, first inspect the oil level and viscosity in the gearbox, replacing it if contaminated or degraded. Ensure proper ventilation and clean any debris blocking heat dissipation. Monitor operating temperatures regularly to prevent damage to internal components of the track drive, promoting longevity and efficiency. - Noise and Vibration Problems
Excessive noise or vibration in the planetary gear reducer can indicate worn bearings or misaligned gears within the system. Begin troubleshooting by examining the gearbox for loose bolts and ensuring all mounting points are secure. Lubricate moving parts adequately and replace damaged components promptly. This approach minimizes downtime for the planetary track drive, enhancing overall machine performance in demanding environments. - Leakage Concerns
Leaks in the track drive planetary gearbox typically arise from faulty seals or cracked housings due to wear or impact. Troubleshoot by visually inspecting the gearbox for oil stains and tightening any loose connections. Replace worn seals and gaskets immediately to avoid lubricant loss. Regular checks on the track drive prevent contamination ingress, ensuring reliable operation and reducing repair costs over time. - Loss of Power
When the track drive gearbox experiences power loss, it may be caused by internal wear or hydraulic issues in bulldozer applications. To address this, test the input pressure and flow rates to the gearbox, verifying they align with specifications. Disassemble if necessary to check for stripped gears. Proper maintenance of the planetary track drive restores torque output, improving traction and productivity on site. - Gear Wear and Damage
Gear wear in the planetary gearbox often stems from contamination or improper lubrication, leading to pitting or scoring. Troubleshoot by draining and analyzing the oil for metal particles in the gearbox, indicating internal breakdown. Clean the system thoroughly and replace affected gears. Implementing a routine inspection schedule for the planetary gear reducer mitigates future damage, ensuring sustained durability in harsh conditions. - Contamination Intrusion
Contamination entering the gearbox can cause accelerated wear and operational failures in tracked vehicles. Start troubleshooting by examining seals and filters in the gearbox for breaches, then flush the system to remove debris. Use high-quality, filtered lubricants to protect internals. Vigilant monitoring of the planetary track drive gearbox environment prevents such issues, maintaining peak performance and extending service intervals effectively.
