Trasmital Bonfiglioli Raupengetriebe i 1:122 2174688 2T705C3122002 Travel Drive
The Trasmital Bonfiglioli Raupengetriebe i 1:122 travel drive, identified by codes 2174688 and 2T705C3122002, is a crawler track gearbox designed for heavy machinery. The German term Raupengetriebe refers to a track or crawler drive, and Fahrantrieb refers to a travel drive. Trasmital is a brand within the Bonfiglioli group, and its travel drives are used in construction equipment, earth moving machines, and tracked vehicles. The 1:122 ratio indicates a very high reduction, which is typical for crawler final drives that must convert motor speed into slow, high torque track movement.
Product Overview
Crawler travel drives are mounted at the track frame and drive the sprocket that engages the track chain. Because tracked machines move slowly but require high traction force, the final drive must provide a large reduction ratio and high output torque. The 1:122 ratio of this unit is suited to this duty. The drive must also withstand shock loads, vibration, dust, and outdoor conditions common in construction and earth moving work.
The codes 2174688 and 2T705C3122002 identify the specific build and configuration. Travel drives are integrated into the machine chassis, and the mounting interface, output shaft, and brake arrangement must match the track frame and hydraulic or electric motor. The nameplate and dimensional drawing should be consulted for exact installation data.
Construction and Design
The travel drive housing is designed for high rigidity so that the gear stages remain stable under heavy load. The gear stages are typically planetary or multi stage designs that distribute load across several gears. Bearings support the input and output shafts and are selected for high radial and axial forces. Seals protect the internal components from dust, water, and mud. Lubrication is contained within the housing and distributed to the gears and bearings during operation.
Many crawler travel drives include an integrated brake that holds the machine on slopes and releases during travel. The brake arrangement and release mechanism should be checked against the machine requirements. The output interface connects to the track sprocket, and correct alignment is important for long bearing and seal life. The housing may include mounting flanges and bolt patterns that match the track frame.
Performance Characteristics
The 1:122 ratio determines the output speed by dividing the input speed by 122. The output torque is multiplied accordingly, subject to the efficiency and torque limits of the gearbox. The drive must be selected for the machine weight, track force, and travel requirements. Shock loads during turning, braking, and uneven ground should be considered in the service factor.
Thermal capacity is important because travel drives operate under continuous load in demanding environments. Lubrication condition and operating temperature should be monitored. The brake must be able to hold the machine on the specified slope. Correct installation and maintenance help maintain stable performance and long service life.
Applications
The Trasmital Bonfiglioli travel drive is suitable for crawler excavators, bulldozers, drilling rigs, tracked loaders, and other tracked machinery. The high reduction ratio supports slow, powerful track movement. The robust construction is intended for construction sites, mining, and earth moving environments where dust, vibration, and shock loads are present.
The drive should be matched to the machine hydraulic or electric motor and the track frame. Correct selection helps ensure reliable travel, controlled steering, and long service life. The travel drive should be installed and maintained by qualified personnel following the machine manufacturer procedures.
Installation Guidelines
Installation should begin with a check of the nameplate data and a visual inspection of the travel drive. The mounting interface should be cleaned and checked for damage. The drive should be aligned with the track frame and sprocket according to the machine documentation. Mounting bolts should be tightened to the specified torque. The brake release and hydraulic or electric connections should be made according to the machine requirements.
After installation, the travel drive should be checked for smooth rotation and correct oil level. The brake should be tested for holding and release. A low speed travel test helps confirm correct operation. Any unusual noise, vibration, or temperature rise should be investigated before full service.
Maintenance Recommendations
Regular maintenance supports reliable performance and long service life. Oil level and oil condition should be checked at recommended intervals. The first oil change should be performed after the initial running in period, and later changes should follow the schedule for the operating conditions. Seals and bearings should be inspected periodically. Leakage, abnormal noise, or vibration should be addressed promptly.
The exterior of the travel drive should be kept clean to support heat dissipation. In dusty or muddy environments, additional protection may be needed. Maintenance records help identify trends and support planned servicing. Following a consistent maintenance schedule reduces the risk of unexpected downtime.
Selection Considerations
When selecting the travel drive, engineers should confirm the required output torque, output speed, machine weight, track force, duty cycle, and environmental conditions. The 1:122 ratio and input speed determine the output speed. The available torque depends on the input power and gearbox efficiency. A service factor should be applied for shock loads, turning, and uneven ground.
The mounting interface, output shaft, and brake arrangement must match the machine. The hydraulic or electric motor interface must be compatible. Correct selection and installation help ensure reliable travel, stable thermal behavior, and long service life.
Conclusion
The Trasmital Bonfiglioli Raupengetriebe i 1:122 2T705C3122002 travel drive offers a high reduction crawler drive solution for heavy machinery. Its robust construction supports high torque transmission and reliable travel in tracked vehicles and construction equipment. With correct installation and maintenance, the drive provides dependable performance and long service life.
