Watt Drive helical-worm gearboxes are drives consisting of a typical worm gearbox and one helical step. Compared to a standard helical-worm gearbox, this system is characterized by greater efficiency and durability up to 95%. It owes its popularity to its attractive price, availability, compact design and maintenance-free operation. Gearboxes can be mounted to the equipment by means of a flange, reaction arm or directly to the body.
Watt Drive helical-worm gearboxes are marked with S symbols.
The standard gear ratio of helical-worm gearboxes is in the range from I=3 to I=3400.