Home Forums General Discussion Technical Questions Why use breaks on geared traction machines

RCD, I think your forgetting that elevator Ring and worm gears have a lead angle to improve efficiency. The sample you've given has no lead angle and cannot be compared to an elevator machine. As a rule of thumb, any Ring-Worm Assembly with a lead angle more than 5 degrees has the ability to Back Drive and must have a brake for safety. If you have the time and inclination just Google WORM GEAR BACK DRIVING and you will have all you need to know.