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 RA3-62 Spindle Repair
The Matsuura RA3-62 is a CNC vertical machining center. It comes fitted with a grease lubricated spindle that is capable of running up to 8,000 rpm.
CHALLENGE
A customer sent in this Matsuura RA3-62 spindle due to the spindle and tool being warm to the touch when running at 6,000 rpm. Upon arriving to Northland Tool and Electronics, we noted that the bearings were noisy and a little rough when spun by hand. After finishing the disassembly and evaluation, we found that the taper had light pock marks and the gripper fingers showed light wear. The rear labyrinth ring was full of drill holes, but they are cosmetic only. We will use the gripper fingers and rear labyrinth as is. No significant dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Matsuura RA3-62 spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, crush rings, and assembly screws
- Kiss grind BT taper to clean up
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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