worm wheel1.widely used in turbines,shaft liners and axletrees,good resistance to wearing,with high precision in dime Worm wheel feature:1.widely used in turbines, shaft liners and axletrees;good resistance to wear, with high precision in dimensions,low noise, advanced centric running castings. 2.With air vent and high precision.3.The structure is compact and the weight is large. 4.Packing:wooden ...