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 MoreHitachi Seiki VS50 Spindle Repair
The Hitachi Seiki VS50 is a high production CNC vertical machining center. It can come fitted with this grease lubricated and stator driven spindle that is capable of running up to 12,000 rpm.
CHALLENGE
Our customer stated they were having issues with noise and vibration during operation. When this Hitachi Seiki VS50 spindle arrived at Northland Tool and Electronics, the first thing we noted was that the spindle was very hard to turn by hand incoming. After fully disassembly and evaluation, it was noted that there was a catastrophic failure of the #1 and #2 bearings. We tested the field of the motor and determined that one leg may be beginning to fail. Coolant was also found to be present in the field. Lastly, the ID tooling taper had high runout of 8µ and ther was poor tool contact. No other dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Hitachi Seiki VS50 spindle:
- Clean, inspect overall dimensions
- Rewind the field
- Grind, chrome plate, and finish grind the ID tooling taper
- Replace bearings, o-rings, and assembly screws
- Replace wiper, gripper balls, and seals
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.
Does your spindle need repair? GET A QUOTE TODAY
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.
Read More