Instead of the worm directly engaging, the recirculating balls are filled between the nut and the worm.

This paper presents the properties of the U-joint spiders and the worms of recirculating ball steering gear which made from a low quenchability steel 60D, as well as their testing results on the road.

Application: Main shaft of machine tool, auto steering structure, main shaft of lathe, grinder, milling machine, drill press, water power dynamotor, tower crane, screw shaft and so on.