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
Okamoto ACC 12-24 EX Spindle Repair
The Okamoto ACC 12-24 EX is a CNC automatic surface grinder. This machine can come fitted with this grease lubricated and pulley driven spindle capable of running up to 1,750 rpm.
This Okamoto ACC 12-24 EX spindle was hard to turn by hand and had high run out on the face when it arrived at Northland Tool and Electronics. After a full disassembly and evaluation, we noted that the rear bearings were contaminated with a brown particulate. It was noted that the front housing was slightly out of ISO (+8/+12), but was not the cause of failure and will be used as is. There were no dimensional deviations to note.
The following actions were performed on this Okamoto ACC 12-24 EX spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
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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