OK so instead of hijacking welder's thread, I thought I'd start my own...
So initially I wanted to see if 0.0015" over the circ of my chuck was excessive, it seems not as the runout follows the chuck, not the spindle. Then I mentioned the noisy gears. I have run the lathe at 900RPM for 20mins and the gearbox temp was just above room temp at a guess. No where near uncomfortable. But while the lathe was running on the High speed gear (960rpm and 1400rpm), it gives off a ringing noise. At low speed (160rpm) it gives a tumbling kind of noise. And at neutral it sounds fine.. I'll try to attach 3 sound files in mp4 to see what you think. I have been under the impression that I need to change the main spindle bearings.
20150525-High Gear.mp4
20150525-Lowgear.mp4
20150525-neutral.mp4
So initially I wanted to see if 0.0015" over the circ of my chuck was excessive, it seems not as the runout follows the chuck, not the spindle. Then I mentioned the noisy gears. I have run the lathe at 900RPM for 20mins and the gearbox temp was just above room temp at a guess. No where near uncomfortable. But while the lathe was running on the High speed gear (960rpm and 1400rpm), it gives off a ringing noise. At low speed (160rpm) it gives a tumbling kind of noise. And at neutral it sounds fine.. I'll try to attach 3 sound files in mp4 to see what you think. I have been under the impression that I need to change the main spindle bearings.
20150525-High Gear.mp4
20150525-Lowgear.mp4
20150525-neutral.mp4
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