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Bench Grinder 21162 - Hesitated to buy it... but now I love it!
I hesitated to buy this Grinder, based on comments in some of the reviews here regarding vibration. After thinking about it for a couple of weeks, I decided to give it a try when I saw it on sale (internet only) for $137.99. I ordered it online with store-pickup, and got it the same day.
The first day I turned it on (not bolted down) and it had a noticeable vibration, even at slow speed. The next day after taking time to bolt it down (and removing/replacing the grinding stone and wire wheel in the process) the vibration seemed much much worse. Upon inspection, I found that the grinding stone now had a side-to-side shimmy (wobble) of about 1/8", even though it was firmly attached to the shaft. Not good, not good at all.
I decided that it had to be related to the fact that I had removed and replaced the grinding wheel. The solution turned out to be very simple. I unplugged the Grinder and loosened the grinding stone just enough so that I could turn the Grinder shaft by hand (by rotating the wire wheel) while holding the grinding stone stationary. I adjusted the grinding stone position (in relation to the shaft) a little bit at a time, then spinning the shaft/stone combination slowly by hand while observing the side-to-side motion in between each adjustment. I found a position that gave very minimal (almost none) side-to-side wobble, and tightened up the locking nut. Powering up the Grinder, it was now (almost) silky smooth. The only (very very minimal) vibration remaining is probably due to a small egg-shape (offset) in the wire wheel. But I will be replacing the wire wheel with a cotton buffing wheel in a few days anyway . . .
This Grinder seems to have plenty of power for the home user. After having been apprehensive about buying it, I'm now really very happy with it.
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Craftsman variable speed bench grinder.... Doesn't hold up!
I bought this about 3-4 years ago for homeowner use. I've used it infrequently in the garage (heated) to wire brush various nuts/bolts/yard tools and sharpen lawnmower blades. It didn't get heavy use at all.
Tonight, it started making noises while using it to clean up some fasteners from our boat motor.... and it burnt out....
It seemed like a good enough unit at first but I think the bearings started going out of it over a year ago. It has always sounded like a freight train rolling through but I lived with it.
Now I'm going to look on Craigslist for something.... I can't do any worse there than at the Sears (made in china to fail prematurely but will surely make my shareholders a dividend next quarter!) tool department!
Hope you have better luck with this one than I did !!!