Spindle bearing adjustment

Looking at the site, they will get them for you, at Gamet prices they are unlikely to hold stocks I fear.

I can wait for 7-10 days...

It's the only indication I've ever found of what the actual cost might be to replace the bearings - prior to finding this all I had to go on was "expensive". Now I know exactly _how_ expensive... =8-O

It might be possible to replace them with different makes and or different grades of Gamut bearing. They do offer different precisions but the better ones which a lathe maker might use seem to be on application.

I saw a small Lang on Ebay recently - bearing prices make me glad I don't have space even for a small on.

John

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Hi Guys,

I was led to believe the front bearing is a back to back taper roller up to a shoulder, the rear bearing holds the complete assembly in pre-load by springs acting rearward against the rear bearing, held captive by an alloy plate inboard of the rear casting, bolted up from the rear.

I do know it is spring loaded, due to me undoing all 6 allen screws not just the 3 holding the rear cover...

That Alloy plate sprang forward to the gear, I ended up having to make 3 longer allen capscrews because I'd used that bolting arrangement for my division plate on the rear...

Bernard

A little update, slackened the headstock hold down capscrews, and adjusted the insitu adjustment gadget.

Got the test bar to virtually no movement along its 16" length, connected the DRO back on the lathe to check there was no cross-slide movement influencing proceedings.

Upon rotation of test bar, I got about 2 tenths tir either end of the bar.

I made a pin spanner to adjust the rear bearings, but couldn't get it to move without what I considered undue force, so left them alone.

I'll live with the slight amount of play in the bearings that I thought I had detected, they run cool anyway, plus I added some 'MolySlip' to the ISO 10 (Tellus 27/Hyd 32) headstock lube oil, a while ago..

Bernard.

Sounds like the job's a good un'

Neil