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Bench Grinder Brake Repair?
- Thread starter tomfrommv
- Start date
- Replies 6
- Views 1,084
ballen
Diamond
- Joined
- Sep 25, 2011
- Location
- Garbsen, Germany
I have one of these - picked up for $15 at a garage sale in Wisconsin eons ago. Great grinder, cast iron guards, very heavy, incredibly smooth. But it has a brake? I never realized that... must not be working on mine either ... takes ages to spin down. Isn't there the danger of unthreading the wheels while braking?
You're right I'm wrong -- took it apart and there is NO brake. Everything looks real nice though. My mistake, in hindsight, was this: it used to slow down real nice, but then I installed a new grind stone; with the new grindstone (more flywheel mass) it now coasts forever. Good to go for another 70 years!
Mr_CNC_guy
Cast Iron
- Joined
- Jul 29, 2018
- Location
- New England
I wonder if changing the switch to one that shorted the motor leads
when turned off would slow the motor faster.
when turned off would slow the motor faster.
ballen
Diamond
- Joined
- Sep 25, 2011
- Location
- Garbsen, Germany
If that works, it will generate a big inductive current surge and burn out the switch contacts. And maybe unthread the grinding wheel. Neither would be good.
richard newman
Titanium
- Joined
- Jul 28, 2006
- Location
- rochester, ny
Why would you want a brake on a bench grinder?
Cyclotronguy
Stainless
- Joined
- Sep 21, 2005
- Location
- Northern California
If the gridner motor is a perm split. IE no potential relay or centrifigual switch, wire a incandescent lamp in parallel with the motor for some braking action.
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