Material: Cast iron hub GG25 with toothed ring made of special bronze G-CuSn12Ni.

Pressure angle: 20°. The gear wheels can only be used with worms having the same centre distance and the same transmission.

** Width of the main body: 26 mm, tapered, to be paired with Tooth Width 20 mm

* The figures stated for the efficiency are only reference values, since - besides the lead angle - also mounting, lubrication, speed and assembly have an influence on the efficiency.