DJD
Member
Earlier today I picked up a old Black and Decker wildcat 9" grinder. It was pretty dirty so I cleaned it up. Reading the info tag and it has 120v dc for input, no mention about AC. Question is, will it be fine to run on AC?
DC only grinder?
- Thread starter DJD
- Start date
I'm not positive so wait till someone comes along who's sure as I was just a kid one the tail end of those things. I never remember not plunging them into the wall so I'm thinking there isn't a problem.
The DC part come into play running on the welder side. The old Lincoln SA 200's made DC power. My old DC grinder was a hand me down that I got in 1980
My friends brother borrowed it about 25 years ago and as far as I know it's still going fine on AC power
theoldwizard1
Well-known member
Does it have a plug on it ? There is such a thing as a "universal" motor, that runs on AC or DC.
jsaw
Well-known member
I Had a grinder that had a tag on it that stated it would run on A/C or D/C
The windings in the motor are wired so that the polarities of the fields and the armature are opposed to each other, so it does not matter if it is run on A/C or D/C.
Lots of older power tools were A/C or D/C