Mining Car Wheels 1. material: cast steel, cast iron 2. high loading capacity: 1-30tons Mining Car Wheels :200-600/900 250-600/900 300-600/900 350-600/9001. material: cast steel or cast iron 2. constitute: two wheels, one axle, four bearings, and other parts.3. loading capacity: 1-25tons, each one is ok.4. wheel sets gauge: 600mm, 762mm, 900mm, and etc.5. the type of the wheels: hollow wheel sets ...