... cast steel or cast iron 2. constitute: two wheels, one axle, four bearings, and other parts.3 ... solid wheel sets.6.the diameter of the wheels: 300mm, 350mm, 400mm, 450mm7.the material of ... two9.the material of the bearing: LYC32212, conical roller bearing, deep groove ball bearing 10. weight: 70kgPlease ... car, small loading capacity mine car, mining car wheels, wheel pairs, wheel sets, U channel steel ...