![](https://osmedia.liugong.com/wp-content/blogs.dir/4/files/2021/03/Undercarriage_Track-roller.jpg)
TRACK ROLLER
Transfer the weight of the excavator to the track; Buffer the impact when digging and walking.
![](https://osmedia.liugong.com/wp-content/blogs.dir/4/files/2021/03/Undercarriage_sprocket.jpg)
SPROCKET
Use the tensioning device to move the idler to adjust the tension of the track.
![](https://osmedia.liugong.com/wp-content/blogs.dir/4/files/2021/03/Undercarriage_idler-roller.jpg)
IDLER ROLLER
Guide the track running to prevent track deviation.Use the tensioning device to move the idler to adjust the tension of the track.
![](https://osmedia.liugong.com/wp-content/blogs.dir/4/files/2021/03/Undercarriage_carrier-roller.jpg)
CARRIER ROLLER
Hold up the upper track to prevent it from sagging excessively due to its own weight.
![](https://osmedia.liugong.com/wp-content/blogs.dir/4/files/2021/03/Undercarriage_Caterpillar.jpg)
CATERPILLAR
By increasing the contact area and reducing the pressure on the ground, it can work smoothly on the soft ground.