We have the following models of used construction equipment for sale:
Komatsu Excavators:pc120-5,pc120-6,pc200-1,pc200-2,pc200-3pc400lc,etc
Hitachi Excavators:ex120,ex200-1,ex200-2,ex200-6,ex200-7,ex300, ex400, ex700, ex800,etc
Caterpillar Excavators:325c,320b,320c,330bl,320d;
All kind of Excavator, Bulldozer,Wheel Loader,Cranes(truck crane, town crane, Crawler Crane),Road Roller, Forklift, Truck, Grader and so on.
Reasons for Crawler excavator Tracks off:
1. Tensioner devices: butter is not enough, springs of tensioner ruptured.
2. Too much abrasion on Connecting pins.
3. The chain-protecting armor get damaged
4. Driven Gear/teeth get badly damaged.
5. Severe abrasion on the Guide Pulley.
used excavator Komatsu PC210-7
model:PC210-7
origin: Japan
We export China construction machinery with high quality and good service. We offer spade machinery such as China excavators,China  track excavator,wheel loaders, China bulldozers and China forklifts.