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| Thrust bearing modification to mini lathe compond slide. |
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| steampunkpete:
--- Quote ---Hello Pete, I agree with what you say if you were talking about the cross slide, but the compound on mine works in a different way. If I remove the handle and the collar, the lead screw will pass through the bracket - is yours the same? --- End quote --- Mine is the same - I had forgotten it was different to the cross-slide. I have already modified my cross-slide with a ball race, and you have prompted me to do a similar mod to the compound. The way I did it was to use a 10mm ID x 15mm OD ball race. The collar was turned off the lead-screw and the bearing fitted with Loctite. A 15mm recess was bored in the back of the bracket, and the lead-screw + bearing loctited in. Because the lead-screw sits about 3mm further out than before I turned up a suitable spacer to go under the handle. Re-assemble and job done in under an hour. Pete |
| steampunkpete:
--- Quote ---Since new, I have had problems with the dial sticking on the compound slide. --- End quote --- p.s. I had the problem after I applied some grease to the friction mechanism, and now I've seen your post I understand why. Lubricating the friction mechanism means that the torque generated by friction between the dial and the bracket can exceed the break-away torque on the dial - so the dial ceases to rotate with the shaft and sticks to the bracket. The quick cure is to de-lubricate the friction spring / dial and apply a smear of thin grease to the dial / bracket interface. That worked a treat for me. |
| ian_in_the_midlands:
Thanks for the feedback Pete. Your earlier post had concerned me a bit. I hadn't thought about doing it that way - it does give you the advantage of the bearing working in both ways. I am sure the root cause is as simple as oil/grease on the friction spring. |
| steampunkpete:
Sorry the response was a bit late, it was a combination of a big birthday & early retirement with consequent gallivanting and getting the mod done so that I was confident that it worked before I posted it. :wave: |
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