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Surface grinder, $700, Toronto, ON

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JustaDB said:
If it was a few thousand km further west, it would have already been evaluated.
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well to tell the truth, it was evaluated... but by an eager beaver who didn't check the mag chuck, or see it run, or bring a test block to grind on all for sides and measure.

I do know it needs a motor rewind or a shop with 575v...

Again, not me.
 
JustaDB said:
:p Well, that guy's gonna take some heat when his ID here surfaces...
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I'll advise him to keep mum when he brings this home... if he brings it home.

I recommended that he shop around for a better price on a rewind, and move it himself to save costs there, and to use cheap amazon VFD and then hopefully only be into the grinder for about $1400
 
Just stumbled across this one and almost posted it too, but had a deja vu moment when I recognized the picture from somewhere....The reason I was going to post it, is because of the electromagnetic chuck. I didn't notice that when I first clicked on this thread. You don't see those too often on machines, and IMO they are the absolute best thing if you're trying to maintain flatness on thin parts. One grinder at an old shop I used to work at had one, and there were many times over the years I always wished for it again. Sure you can half mag and shim on a permanent mag chuck, but it's not the same as true variable magnetism.

It's almost worth buying it just for the chuck, and flipping the grinder again, Which is still a good grinder (if it's not clapped out that is).
 
TorontoBuilder said:
I'll advise him to keep mum when he brings this home... if he brings it home.

I recommended that he shop around for a better price on a rewind, and move it himself to save costs there, and to use cheap amazon VFD and then hopefully only be into the grinder for about $1400
Click to expand...

I'd avoid rewinding. On a quality grinder the motors are finely balanced. I learned my lesson there ..... once upon a time as a newbie, I swapped out an SG motor and soon changed it back and got a quite a difference in finish. (built an RPC as well, in the days before inexpensive VFDs). I don't see any now, but 220-600 single coil autotransformers come up inexpensively .... feed that into a vfd and away you go. I'd say buy it and be patient for a good deal on a transformer.

For their mills they used a Spanish company to make them and they were excellent .... I'd suspect their grinders are as well, don't know if the same firm made them. If spindle bearings, mag chuck and ways are good, that imo is great deal.

...and make sure he removes the table to move it :)
 
Mcgyver said:
I'd avoid rewinding at about all costs. On a quality grinder the motors are finely balanced. I learned my lesson there ..... once upon a time as a newbie, I swapped out an SG motor and soon changed it back and got a quite a difference in finish. (built an RPC as well, in the days before inexpensive VFDs). I don't see any now, but 220-600 single coil autotransformers come up inexpensively .... feed that into a vfd and away you go.

For their mills they used a Spanish company to make them and they were excellent .... I'd suspect their grinders are as well, don't know if the same firm made them. If spindle bearings, mag chuck and ways are good, that imo is great deal.
Click to expand...
agreed that rewinding is a last resort, but some people don't seem to have patience...
 
JustaDB said:
:p Well, that guy's gonna take some heat when his ID here surfaces...
Click to expand...
Yeah, that was me. It appeared to be in good condition, x/y rolled smoothly, there was no play in the spindle that I could feel. I was pumped up planning how I would get it home and didn't think to see it run.
The real problem for me was the 575v motor, can't do anything with it, rewinding it was cost prohibitive and likely not to be as well balanced as it was before the rewind.
So I chalked it up to experience and John was kind enough to bring my feet back down onto solid ground with his advice, which I appreciate very much.

I don't mind throwing myself under the bus, I've never learned much from getting right the first time.
 
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