Motors
Motors
(OP)
Hi Guys,
I need to find a motor that "locks up" when it does not have power going to it. Do these exist and what would they be called?
I need to find a motor that "locks up" when it does not have power going to it. Do these exist and what would they be called?





RE: Motors
RE: Motors
RE: Motors
RE: Motors
RE: Motors
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: Motors
But as others have mentioned, a worm gear usually doesn't need one and on a satellite dish I have to imagine you have a very high gear ratio. Worth considering.
RE: Motors
I may consider a brake to provide faster stops for more precise positioning.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Motors
I only mentioned the brake motors because he asked if there was such a thing.
RE: Motors
RE: Motors
RE: Motors
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Motors
RE: Motors
Rob Steves - Zaber Technologies Inc - http://www.zaber.com
RE: Motors
I know this treads getting on a bit but here's my cents worth. I used to work on a lot of gantry cranes with Demag brand brake motors, these are quite interesting, the rotor is tapered. When energized the taper causes the rotor to suck into the stator. When de-energized a spring pushes the rotor out of the stator against a tapered brake shoe mounted where the fan housing would normally be. This seems simpler and required less maintenance than others where a separate solenoid activated brake is provided. I have never seen one operated by VFD but I imagine they would be OK.
Roy
RE: Motors
RE: Motors