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 MoreColombo RA110/22 Spindle Repair
The Colombo RA110/22 spindle is off of a larger gantry style CNC wood router. It can come fitted with this grease lubricated and motor driven spindle that is capable of running up to 24,000 rpm.
CHALLENGE
Our customer sent in this Colombo RA110/22 spindle to be repaired. Once the spindle arrived at Northland Tool we completed a full disassembly and evaluation.
This is what we found:
- Spindle had heavy sawdust contamination throughout entire spindle.
- Spindle spun freely incoming, but bearings felt extremely worn/noisy when spun by hand
- Rear bearings were contaminated with a rusty/ brown sludge
- Front and rear bearings showed signs of incorrect preload / under loaded. Which aided bearing failure
- Sensor #1, #2, and #3 wiring had poor connections
- Drawbar pulled acceptable force but was showing signs of light wear on the gripper post and Bellevilles
SOLUTION
The following actions were performed on this Colombo RA110/22 spindle:
- Clean, inspect all overall dimensions.
- Replace bolts, o rings, bellevilles, and bearings.
- Solder Proximity Sensor wires back together
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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