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 RV154.22 Spindle Repair
The Colombo RV154.22 is a CNC wood routing spindle. 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 RV154.22 spindle stating that the spindle had been sitting in storage. Once the spindle arrived at Northland Tool we test ran the spindle, around 2,000 rpm the bearings became quite noisy. A full disassembly and evaluation was then performed.
This is what we found:
- The field passed incoming testing on the motor analyzer
- Draw bar pulled good force and appears to be in good condition
- Rear bearings have a slight coolant contamination and the grease has been pushed out of the balls (Pic 1)
- HSK 50 taper had good run out and good contact
- The grippers were in good condition and will be re-used
SOLUTION
The following actions were performed on this Colombo RV154.22 spindle:
- Clean and inspect all dimensions
- Replace Bolts, O-rings, and Bearings
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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