My phase converter motor has an exterior grease zerk and the bearing is sounding "dry''. So the question is what type of grease is recommended for this application ?
[OP]
Member
My phase converter motor has an exterior grease zerk and the bearing is sounding "dry''. So the question is what type of grease is recommended for this application ?
Contributor
Any standard medium bearing grease should do. Not a hard life for a sealed bearing in a temperature controlled shop. Do not use chassis grease.
Bill D.
[OP]
Member
Thanks Bill.
Contributor
Mike, if you can get a synthetic grease, consider it, You will get longer life from it.
A few years back my skill saw started making some noise and I opened up the gear box. All the grease was off the gears and up against the side of the housing. The gears were all running dry. I added a zerk fitting and a relief hole and periodically give it a squirt of grease. I also open my electric drill from time to time and regrease the sears.
Lee Schierer
USNA '71
Go Navy!
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Contributor
A skil saw does not use grease it uses a heavy gear oil. It will leak out over time. The manual has specific instructions on how to set the saw down to check oil level inside the fill port.Originally Posted by Lee Schierer
BILL D
Mine is a Craftsman and it definitely has a grease gearbox.
Contributor
That is a good idea Lee. Thanks for sharing. I have a craftsman skilsaw I was just using yesterday. It is 30 years old and probably needs new grease.
Member
Be careful not to over grease. We have had several motor failures at work due to over greasing. Definitely need a drain hole for the old grease to come out of like Lee has on his saw.
Member
Only use a lithium grease on elect motors and use just a little bit.
Contributor
Video from Skil on oil changes. 25 and 40 seconds in are the main points.
Bill D.
https://www.youtube.com/watch?v=3I040fdjp7Y
That was a selling point when Makita came out with their gear drive saws. they do not use oil that can leak out.
Last edited by Bill Dufour; 04-08-2019 at 2:55 PM.
[OP]
Member
Wow start a thread about grease for an electric motor and now we are changing oil in worm drive skilsaws... Gotta love "the creek".Anyhow I got a tube of Mobile electric motor grease today,so I think I am good now. Stopped at an electric motor rewind place and asked,they just went in back and brought out a tube and handed to me.
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