1. Do worm gears have a self-locking mechanism?

The self-locking of a worm gear depends, among other things, on the pitch angle of the gearing, the speed and the type and temperature of the lubricant. The self-locking increases as the efficiency decreases. When it comes to self-locking, a distinction is made between static self-locking (Rs) and dynamic self-locking (Rd).

There are 3 areas of self-inhibition:

A) There is self-locking if the efficiency is less than 0.45
B) Uncertain self-locking if the efficiency is between 0.45 and 0.55
C) There is no self-locking if the efficiency is greater than 0.55