Worm gearboxes are the most commonly used gearboxes in industrial machines.
Worm gearboxes are the most commonly used gearboxes in industrial machines. They owe their popularity to their attractive price, availability, compact design and maintenance-free operation.
Worm gearbox is a gearbox in which two elements work together: a worm (made of hardened steel) and a helix (made of bronze alloy). Gearboxes can be mounted to devices by means of a flange, reaction arm or directly to the body. An important advantage of worm gearboxes is self-locking.
Motovario worm gearboxes are marked with symbols:
– NMRV, NMRV-P – worm gearbox with IEC flange for mounting an asynchronous motor
– NRV – worm gearbox’s reducer
The standard worm gearbox’s ratio is in the range from I=5 to I=100.
By using the HW helical step or by assembling two gearboxes we can achieve a gear ratio up to I=10,000. The efficiency of the worm gearboxes, depending on the gear ratio, ranges from 40% to 85%.
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