Mini lathe Taper Bearing Upgrade Issues?

msamodurov

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Jan 7, 2015
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Hi All,
I have a Microlux 7x14" spindle head that I recently installed taper bearings on and wanted to know if anyone on this forum has done the same. After reassembly I noticed the Optical Interrupter was not tight between the spacers. Maybe .20 - .03" axial slop. Would anyone know if this is normal? FYI - I'm pretty sure that the races for both new bearings are fully seated or should I check again?
Thanks!
M.
 
I just did this upgrade myself , although my lathe ( asian 7 x 8 ) does not have the rpm indicator option.

I found on my first install of the new bearings were too tight on the spindle. Thus I could not adjust the pre load properly.

The bearings would not move or slide on the spindle with out crushing the plastic spacers.

So , I polished the spindle ever so lightly until I could slip-fit the new bearings on the spindle ( tight but still by hand ) made new aluminum small spacers with the relief cut for the new tapered bearing case to fit. I made a graphite large spacer. now the pre load is adjustable.

I hope this helps. I also made a few posts, threads about my lathe upgrades.

feel free to check them out too.

Road
 
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