Almost complete victory over the compressor

Motors need "some" endplay, i.e.: for lube space. Shim it for .006-.010, see if that helps.

See if that bearing is getting hot. It may just need a burn-in period but you might reconsider the shim pack and give it a bit of play. I always bang the shaft of a motor I re-bearing back and forth a bit with a soft-blow hammer to help "seat" everything. The seals do add a bit of friction for a while.

It depends on what your input voltage is. The higher the volts, the smaller the amps.

a 5 amp difference is negligible in the grand scheme of things

Gunner

Yes, I am positive that I goofed on the play (shimming) issue and shimmed too much. I will leave 1/16 inch of play per Baldor and will see if it makes any difference.

I am just worried about the motor overheating. Anyway, I will give it a little more play and will see how it goes, but I am very hopeful.

yep.. I will... the finale is close...

On Thu, 19 Jun 2008 00:48:03 -0500, with neither quill nor qualm, "DoTell" quickly quoth:

And ohm out the windings so he can tell which one is shorting?

-- After all, it is those who have a deep and real inner life who are best able to deal with the irritating details of outer life. -- Evelyn Underhill

I will order it today (need to get a pressure switch also)

thanks Randy...

Most motors I've dealt with use a wave spring at the dead end to thrust the rotor forward and still allow for the rotor to expand when it gets hot.

look here:

Thank You, Randy

Remove 333 from email address to reply.

I believe the endplay is needed to allow the rotor to center itself in the stator's magnetic field while running.

What I think now is that the original owner of this compressor used a wrong bearing, not 6206, but a bearing that was thinner and thus allowed too much endplay. I believe that I should simply take the shims that I put, out, and with the correct 6206 bearing the rotor should have just the right amount of end play.

ZZ or Z means shielded, not sealed.

And in my experience Z would be one shield and ZZ 2 shields, one each side. IIRC sometimes the designation is L or LL and for rubber seals RS or 2RS. For one offs I was recommended to get 2 seal/shield variants as more commonly stocked and flip one out if not required as it easy to do.

Make sure you have good supply voltage. Compressors really don't like extension cords of any description.

Check supply voltage, yes, never use "extension cords", no. The entire power distribution system is an "extension cord", and there is nothing wrong with using "extension cords" as long as they are of a proper gauge for the length and load and have quality connectors of appropriate ratings.

I believe that with my cord, the voltage stays at 230 or so.