The Bridgeport Torq-Cut 22 is a smaller CNC vertical machining center. It comes fitted with a grease lubricated and belt driven spindle capable of running up to 7,500 rpm.
Read MoreOkamoto 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.
CHALLENGE
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.
SOLUTION
The following actions were performed on this Okamoto ACC 12-24 EX spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
RESULT
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.
DETAILED CAUSE OF FAILURE
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More Case Studies
Repair History - Here are examples of similar spindle repairs that may contain additional information that will help you. If you have additional questions, please contact us.
It’s a fact of machining — eventually, even top-of-the-line turning machines will experience a spindle failure. Spindles endure tension, torsion, heavy loads, and speeds up to and beyond 150,000 RPM, to name a few of the standard stressors.
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