... .Hardness:HRC50-56\4mm-18mm 4.Tec:Forging 5.Weight:34.68kg Komatsu PC200-5 track roller The company mainly produces all kinds ... parts,such as Track Roller, Carrier Roller, Sprocket ,Segmnet, Front Idler, Track Link assembly,Track Shoes,Track Bolt and Nuts,Track ... Bush and Pin,Bucket Pin,Roller Guide,Idler Yoke and so on undercarriage parts. Our products have passed ...