Worm gear with recirculating balls - has kidney-form races enclosed by half shells to form worm wheel

摘要

The worm gear with recirculating balls contains of a worm with a thread of semicircular section,. The worm wheel in which the balls recirculate has a kidney section, formed by two shells fixed to the periphery. The replacement of sliding by rolling friction reduces the coefficient of friction and improves the efficiency. The gear has a high load capacity.