Komatsu excavator EC140 PC135 SA 1143-01060 VOE 14524182 travel motor assy for TM22VC final drive assy

The excavator travel assembly is the core component for machine movement, consisting of a hydraulic motor, reduction gearbox, sprocket, track chain, idler wheel, carrier roller, and track roller. Its key function is to convert hydraulic energy into mechanical power, enabling stable mobility across challenging terrains.

Not all excavator undercarriages are the same! They are designed and configured to handle different ground conditions, directly impacting your machine's capability and stability. For standard conditions like dirt and gravel, a typical standard width/length undercarriage offers good balance and maneuverability. Working in soft, muddy, or marshy terrain? You need a Wide Undercarriage (longer track frames and wider track shoes). This spreads the machine's weight over a larger area, significantly reducing ground pressure (measured in PSI) to prevent sinking. Think of snowshoes versus regular shoes. For even more extreme flotation, Extra-Wide or Swamp Undercarriages with extremely wide triple-grouser shoes are used. Conversely, in confined spaces or dense forests, a Narrow Undercarriage might be chosen for better maneuverability, though it sacrifices some stability. Long Undercarriages (increased distance between front idler and rear sprocket) provide superior stability on slopes and better weight distribution for heavy lifting. Choosing the right undercarriage configuration during purchase or rental is critical for safe and efficient operation on your specific job site. Using the wrong type can lead to instability, sinking, or excessive wear.