... : 300mm, 350mm, 400mm, 450mm, etc. 3.Heavy loading Railway Wheel Set:1. material: cast steel or cast iron 2. constitute: two ... etc.5. the type of the wheels: hollow wheel sets and solid wheel sets.6.the diameter of the wheels: 300mm, ... material of the bearing: LYC32212, conical roller bearing, deep groove ball bearing10. weight: 70kgRailway Wheel Set Technical parameters: ModelMine Car Weight kgTrack ...