... Joint type; Sealed&Lubricated Joint type; Dry type Undercarriage parts for crawler crane, excavator and bulldozer, including track chains, track shoes ... roller, idler, carrier roller, bolt & nut, etc.Which can suitable for many modle, such as CAT, VOVO, DOOSAN, SUMITOMO, KOMATSU, ... same time, we can customize track shoes, swamp shoes for you, according to your requirements or drawings.Track Chain Assy ...