3. Loading capacity: 1-300 tons, can be customized. 4. The type of the wheels: single flange wheel, double flange wheel, hollow wheel sets and solid wheel sets; 5. The diameter of the rail troley steel wheels : 300mm, 350mm, 400mm, 450mm;500mm; 900mm, etc. We can supply a range of hardness forged rail wheel and PU wheels including: Crane Wheels