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 MoreMori Seiki MH-630 Spindle Repair
The Mori Seiki MH-630 is a CNC horizontal machining center. It comes equipped with an oil mist lubricated and coupling driven spindle that is capable of running up to 6,000 rpm.
CHALLENGE
This spindle came in with the coupling for the drive motor attached to the rear of the shaft. Our incoming evaluation found the mating surfaces of these two parts was fretted and out of specification. This was causing vibration in the spindle resulting in poor part finish. This is one of the reasons we request you send as many of the rotating parts of the spindle that is reasonable. If we had not received the coupling and addressed the wear, the lifespan of the repair would have been reduced from the strain of the vibration and wear.
SOLUTION
The following actions were performed on this Mori Seiki MH-630 spindle:
- Clean all parts of the spindle
- Replace bearings, o-rings, and assembly screws
- Grind, chrome plate, and finish grind the spindle shaft and drive coupling as a matched set
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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