Worm gear winch drive HDE7

1. The annular surface wraps the worm structure, and the transmission torque is large. 2. The raceway and tooth surface are quenched, with high hardness and rigidity. 3. The bearing diameter, axial load and overturning moment are large. 4. The amount of maintenance is very small, and the grease is used for life without replacement. 5. With self-locking function.