This is a heavy-duty worm gear set for hoisting machinery featuring a large module. Characterized by its substantial size and robust tooth profile, it represents a typical industrial-grade power transmission component. The tooth flanks have undergone precision grinding, resulting in high surface finish. This process minimizes frictional losses and heat generation during meshing with the worm gear.
The worm itself is a stepped shaft, with a continuous hourglass (toroidal) or cylindrical helical thread machined into its central section. The left end of the shaft features threads and a locknut assembly—typically utilized for bearing mounting or securing auxiliary components—while the right end consists of a smooth journal.
Its defining features include the complex geometry of the worm shaft (incorporating precision bearing seats and locking interfaces) and the multi-bolt flange connection employed on the worm gear.
This large-module, heavy-duty worm gear set with a flanged worm wheel serves the critical dual purpose of “low-speed, high-torque output plus mechanical self-locking to prevent load drop” in large-scale hoisting machinery. It represents a classic final-stage reduction and safety backup unit within the lifting mechanism.
