- Joined
- May 15, 2016
- Messages
- 98
It has the sound of possibly some sheet metal object vibrating internally. I might need to look inside.
Dick
Dick
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Bench Grinder Has Annoying Humming Sound
- Thread starter old toolmaker
- Start date
- Joined
- May 15, 2016
- Messages
- 98
I tried to remove the end covers but I could not slide them off. They would spin but not come off. I also checked and there is a capacitor in the base. I don't know if it is a run capacitor or a start capacitor.
The arbor runs very true and there is no excessive vibration with wheels off. The covers are like bells and the hum might be a resonance sound being transmitted by the thin sheet metal the covers are made of. All in all the grinder is a good buy for the money and I think I will tolerate a little hum sound as long as it runs smooth. I was just tying to make a silk purse from a sows ear! I also had an 8" Harbor Freight bench grinder I bought for $9.99 in 1978 and sold it 2012 for $82.00 at auction when I retired. It was still going strong. Thanks for all the help!
Dick
The arbor runs very true and there is no excessive vibration with wheels off. The covers are like bells and the hum might be a resonance sound being transmitted by the thin sheet metal the covers are made of. All in all the grinder is a good buy for the money and I think I will tolerate a little hum sound as long as it runs smooth. I was just tying to make a silk purse from a sows ear! I also had an 8" Harbor Freight bench grinder I bought for $9.99 in 1978 and sold it 2012 for $82.00 at auction when I retired. It was still going strong. Thanks for all the help!
Dick