This spindle is a heald OD grinder being run up on the test stand. Denton is explaining the specifics of the spindle. View Our Heald Page Here.
Heald 438-100 Spindle Repair
In most companies there are several operators working on the same machine. In this case the third shift operator took the spindle apart trying to figure out what was happening with the air purge. He then put the spindle back together. The spindle was making noise and was tight. Our technician spoke with him but was unable to troubleshoot the problem over the phone. The spindle still was not working properly so they sent it to Northland Tool & Electronics for a thorough evaluation.
We determined that this Heald 438-100 spindle had contaminated bearings, and most of the grease was washed out. The shaft face had 10 microns of runout, and needed a kiss grind. View Our Heald Page Here.