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 MoreMatsuura MC-510VF Spindle Repair
The Matsuura MC-510VF is an older CNC vertical machining center. It comes equipped with a grease lubricated and coupling driven spindle capable of running up to 8,000 rpm.
CHALLENGE
This Matsuura MC-510VF spindle arrived at Northland Tool and Electronics where we completed a full breakdown and evaluation. Upon inspection we noted that there was a catastrophic failure of the rear roller bearing, likely due to coolant contamination (rear of spindle coated with residue.) It was also noted that the shaft taper was very worn and had 10-15µ runout. No other dimensional deviations were noted.
SOLUTION
The following actions were performed on this Matsuura MC-510VF spindle:
- Clean, inspect overall dimensions
- Kiss grind shaft taper
- Install threaded set screw holes in rear balance ring to enable easier balancing
- Replace bearings, Bellevilles, gripper balls, 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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