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 SVD-403 Spindle Repair
The Mori Seiki SVD-403 is a CNC vertical machining center. It comes equipped with an oil mist lubricated and stator driven spindle capable of running up to 20,000 rpm.
CHALLENGE
When this Mori Seiki SVD-403 spindle arrived at our facility the first thing we noted was that the bearings were very noisy. After disassembly, we noted that the taper was bell mouthed with one chip. Our Big-Plus test bar runout was 24-30µ. Lastly, the drive dogs had been modified. No other dimensional deviations were noted on this spindle.
SOLUTION
The following actions were performed on this Mori Seiki SVD-403 spindle:
- Clean, inspect overall dimensions
- Replace bearings, Bellevilles, plastic oil lines, ferrules, o-rings, 10mm front cover balls and springs
- Grind, chrome plate, and finish grind the taper to Big Plus 40 taper specifications
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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