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 MoreMiyano ABX-51TH2 Spindle Repair
The Miyano ABX-51TH2 is a twin spindle, 3-turret precision turning center capable of ten-axis production turning. The spindle we repaired is grease lubricated and can run up to 5,000 RPM.
CHALLENGE
This Miyano ABX-51TH2 spindle was sent in by a customer stating that they had excessive vibration and noise while running it. Upon arriving to Northland Tool and Electronics the spindle felt rough when spun by hand and the bearings sounded worn. After disassembling the spindle, it was found that bearings were heavily contaminated with an oil-based substance that had penetrated throughout the spindle. There were no dimensional deviations found on any critical surfaces (bearing journals, bearing shoulders, taper, etc).
SOLUTION
The following actions were performed on this Miyano ABX-51TH2 spindle:
- Clean all parts of the spindle
- Replace all bolts and o-rings
- Replace bearings
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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