The hoist travels by guide rollers and flangeless wheels remarkably reduce the wear of I-beam and wheels. Positioning is facilitated by a brake provided and small travel inertia. Brake torque can be adjusted, also. Besides the standard type and the low headroom type, wheels of the double rail type from two to five tons are quenched, and thus the lifetime is more than 2.5 times longer than that of previous hoists.
By the Self-adjusting of Center Core, the wheels can closely follow the rails