I need to change some undercarriage for my Komatsu excavator,but i do not how to confirm its quality.
YOu need to change some undercarriage? Usually You just rebuild it. With new parts of coarse. used parts on heavy equipment usually don't work out well.
The material for undercarriage should be 40CR or 50Mn alloy steel,make it good hardenss. hope this is helpful to you. :P
