The mini excavator undercarriage typically consists of several components, including:
Tracks: The tracks are the main components of the undercarriage and are responsible for supporting the machine's weight and providing mobility. Mini excavators typically have rubber tracks, which offer good traction and reduce ground damage.
Idler: The idler serves as a support for the tracks and helps to maintain tension as they move around the sprockets. It also guides the tracks in a straight line and prevents them from slipping off.
Sprockets: The sprockets are located at either end of the tracks and are responsible for driving the tracks around in a circle. They are connected to the machine's hydraulic system and rotate as the operator moves the controls.
Rollers: The rollers are placed in between the idler and sprocket, and they help to distribute the weight of the machine evenly across the tracks. They also help to reduce wear and tear on the tracks by ensuring that they maintain a consistent tension.
Tensioner: The tensioner is responsible for keeping the tracks at the correct tension while they are moving around the machine. It is located near the idler and can be adjusted by the operator to ensure that the tracks are neither too loose nor too tight.
Final drives: The final drives are mounted on either side of the machine and are responsible for driving the sprockets which in turn drive the tracks. They are powered by the hydraulic system and so provide the necessary torque to move the machine across the ground.
Together, these components make up the mini excavator undercarriage, which is designed to provide stability, traction, and mobility to the machine.