I have been looking for similar items and came across this site. Look under permanent magnet clutch/brakes. I think this just micht work for you.
http://www.ogura-clutch.com
Thanks Nuclear,
I have actually spoken with Jeamar on the phone. I am trying to create a custom product and they were not interested in anything except their established product line. I approached them because I liked their apparent quality but I need a custom piece and their winches cost too...
As an alternative to relying on the worm gear for braking, is there a simple bi-directional shaft brake on the market. I have found sprag clutches, uni-directional bearings and very expensive disk brake assemblies but I was hoping for something more elegant and cost effective.
I have been finding the anti-backdriving ratios for worm gears posted to be anywhere from 30:1 to 50:1. I want to use a worm gear for a winch but I want a ratio between the input and output to be much lower. Is it possible to have the gearing to be, say, 40:1 and then attach the gear to a larger...
I have an invention and need to find a skilled and reliable source for design and manufacturing of a winch type device. It is an item I am planning on mass marketing so I need to be able to retain rights and control.
Any suggestions would be of help.