1)Product Basic Information 

Mateiral: 40 CR or 50Mn; 
Surface hardness: HRC 50-58, depth 4-10 mm 
 

2)Each roller shell is carefully heat treated to ensure long wear life and stress resistence; 
3)Each roller is precision machined to house special high impact low wear bimetal bushings. 
4)Reliable and long life time guaranteed; 
5)High strength and superior wear resistance. 
6)Professional, high-quality with competitive price, demanding 
7)Undercarriage parts for excavators and bulldozers ( komatsu, hitachi, caterpillar, sumitomo, kobelco, etc)