Changing bearings in Grizzly G1023 motor.

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Forum topic by lateralus819 posted 12-01-2013 05:46 PM 2700 views 0 times favorited 5 replies Add to Favorites Watch
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2241 posts in 1885 days

12-01-2013 05:46 PM

Recently aquired G1023, makes a nasty noise upon startup. Took off the fan shroud, as well as the fan and started it up. Still makes noise. Like a grinding noise. When spinning by hand i can feel some grittyness, not bad but its apparent.

Is this something i could tackle myself? I keep trying to find articles relating to it, but all i can find is how to replace arbor bearings.

It’s a 1999 model. Some points it would be whisper quiet for a few seconds and then persist.

5 replies so far

View mantwi's profile


312 posts in 1892 days

#1 posted 12-01-2013 06:28 PM

I also have an older Grizzly G1023 and experienced the same issue, it was definitely the bearings. The fix is very doable,you can get bearings at any bearing supply house. I paid $27.00 for the pair. The size is stamped on the bearing itself so it’s not a problem knowing what to use. By the way the Grizzly uses the same size and type bearings as the Delta Unisaw. I am including a link to the videos I used to learn how to replace mine. The first video has 4 parts (I suggest watching parts 2 & 3) and is about replacing arbor bearings it demonstrates the removal and replacement of bearings the procedure is the same on the motor. The 2nd link shows how to take a motor apart and replace the bearings and between the two sources you will get the knowledge need to perform this job. If you don’t have manual Grizzly has online versions that are helpful when trying to remember what goes where. By the way I do suggest replacing the arbor bearings while your at it.

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2241 posts in 1885 days

#2 posted 12-01-2013 06:37 PM

Excellent info. Thanks so much. How long did it take you roughly?

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2241 posts in 1885 days

#3 posted 12-01-2013 06:43 PM

Okay just watched the 2nd video. My question is, when i took off the fan shield, i noticed some wires and stuff at the end of the shaft, that doesn’t pose a problem removing the inner most bearing?

I might as well just do this myself. I imagine a repair might cost upwards of $100.

View MedicKen's profile


1615 posts in 3457 days

#4 posted 12-02-2013 06:47 AM

The bearings should be fairly straightforward to replace. Be aware that you will have a centrifugal switch inside the motor and the wiring to the switch will be short. Be careful when you get the bell ends loose. Here is a good article on a Baldor motor showing the switch. Start to finish should be 30-60 minutes.

-- My job is to give my kids things to discuss with their

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2241 posts in 1885 days

#5 posted 12-03-2013 12:23 AM

Well the motor is back together, new bearings and all. Was quite an easy fix. Thanks to all who helped.

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