Product Overview This track roller (bottom roller) is an aftermarket undercarriage spare part engineered for IHI CCH400, CCH500, and CCH700 crawler cranes. Manufactured from high-strength alloy steel with a quenched and tempered finish, it delivers dependable wear resistance and stable operation in demanding job site conditions. Each unit features a leak-proof floating seal and precision-machined dimensions, allowing direct replacement without modification. It is a reliable,