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 MoreYama Seiki BM-1020 Spindle Repair
The Yama Seiki BM-1020 is a CNC vertical machining center. It can come equipped with a grease lubricated and belt driven spindle capable of running up to 10,000 rpm.
CHALLENGE
When this Yama Seiki BM-1020 spindle had bearings that were noisy and felt clunky when rotated by hand in assembly incoming. After a thorough breakdown and evaluation, we noted that the #1 and #2 front bearings suffered a catastrophic failure, the cages were destroyed. The rear bearing pair still contained discolored grease and both felt worn when rotated. No significant dimensional deviations were noted (tooling taper ID, bearing journals/shoulders, housing bores) for this repair.
SOLUTION
The following actions were performed on this Yama Seiki BM-1020 spindle:
- Clean, inspect overall dimensions
- Replace all bearings, bellevilles, 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.
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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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