Catastrophic bearing failure was the main cause of this spindle malfunction Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication……Read More
Milltronics ML18 Spindle Repair
The Milltronics ML18 is a large CNC tool room lathe. It comes fitted with a grease lubricated and pulley driven spindle that is capable of running up to 2,600 rpm.
This Milltronics ML18 spindle was extremely rough and hard to turn by hand incoming. Upon disassembly and inspection, we found that the all the bearings had brown particulate contamination.
The front and rear roller bearings were both heavily contaminated with the brown particulate. Lastly, the front OD taper and face had slightly high run out (2-4 microns) and look very poor cosmetically. There were no other dimensional deviations.
The following actions were performed on this Milltronics ML18 spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
- Kiss grind the front OD taper and face
After reassembly of all components, adjusting bearing preload, and undergoing break-in and testing procedures, this spindle passed our final quality inspection before being returned to our customer with a 1-year warranty.
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