LumberJocks

Slow speed grinder on the fritz

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Ben posted 03-04-2018 05:22 PM 282 views 0 times favorited 5 replies Add to Favorites Watch
View Ben's profile

Ben

387 posts in 3058 days


03-04-2018 05:22 PM

I have a Woodcraft slow speed grinder – about 9 years old and seen very little use.
Recently it comes on, spins at a very slow speed for maybe 10-20 seconds, sort of whiny, then stops with the motor whining.

Any ideas on how to fix?

Thanks.


5 replies so far

View MrUnix's profile (online now)

MrUnix

7049 posts in 2400 days


#1 posted 03-04-2018 06:05 PM

Whining sounds like bearings going bad. Open it up and check.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View Lazyman's profile

Lazyman

2635 posts in 1589 days


#2 posted 03-05-2018 12:54 PM

If you spin it by hand is there any resistance or noise? If not, my guess would be the capacitor is bad.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View BoardButcherer's profile

BoardButcherer

144 posts in 296 days


#3 posted 03-05-2018 01:27 PM

Bench grinders don’t usually have capacitors, do they?

My bet is on a broken wire coming off of the commutator. If it wasn’t attached well just warming up and cooling off in your shop for 9 years could’ve caused it to pull loose.

View Lazyman's profile

Lazyman

2635 posts in 1589 days


#4 posted 03-05-2018 01:49 PM



Bench grinders don t usually have capacitors, do they?

My bet is on a broken wire coming off of the commutator. If it wasn t attached well just warming up and cooling off in your shop for 9 years could ve caused it to pull loose.

- BoardButcherer

Yes. The capacitor is usually in the base or behind the switch.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View BoardButcherer's profile

BoardButcherer

144 posts in 296 days


#5 posted 03-05-2018 02:24 PM


Bench grinders don t usually have capacitors, do they?

My bet is on a broken wire coming off of the commutator. If it wasn t attached well just warming up and cooling off in your shop for 9 years could ve caused it to pull loose.

- BoardButcherer

Yes. The capacitor is usually in the base or behind the switch.

- Lazyman

Thanks. Never had to break one down.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com