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 MoreKitamura HX400I Spindle Repair
At Northland Tool and Electronics we component and assembly balance spindles during the repair process. This guarantees you a smooth running spindle that will actually last longer because less stress will be placed on the bearings. During the installation process of this particular Kitamura spindle it is necessary to remove some of the rotating components from the rear of the spindle. We clearly mark their orientation before shipment so there is little possibility of reinstalling them in the wrong orientation.
CHALLENGE
This Kitamura HX400I spindle had been crashed and the front bearings were noisy when rotated. The shaft taper was cracked on both sides where the drive dogs bolt on and the drive dogs were also damaged. We also noted that the o-rings were severely worn. No dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Kitamura HX400I spindle:
- Clean, inspect overall dimensions.
- Replace bearings, o-rings, shaft, drive dogs, 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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