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 MoreHyundai Kia HI-V50D Spindle Repair
The Hyundai Kia HI-V50D is a high production CNC vertical machining center. It can come fitted with this grease lubricated and pulley driven spindle capable of running up to 10,000 RPM.
CHALLENGE
This Hyundai Kia HI-V50D spindle rotated freely when it arrived at Northland Tool, but the bearings felt worn when spun by hand. After performing a full breakdown and evaluation, we recorded no dimensional deviations throughout the spindle. However, we did find the rear tapered roller bearing had catastrophically failed and the ball cage was broken.
We also noted that the front bearings were contaminated with coolant and the grease had been pushed through the balls.
SOLUTION
The following actions were performed on this Hyundai Kia HI-V50D spindle:
- Clean, inspect overall dimensions
- Replace bearings, bolts, and o-rings
RESULT
After reassembly of all components and adjusting bearing preload, we put the spindle through a rigorous break-in and testing procedure to make sure it passes our final quality inspection. See below for the passing test reports:
Front Bearings Vibration Analysis Spectrum: Rear Bearings Vibration Analysis Spectrum:
This spindle passed our final quality inspection and was 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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