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 MoreMazak Quick Turn Nexus 100-II Spindle Repair
This Mazak QTN-100-11 machine was a demo model that our customer bought. It ran well for years but started to have spindle noise at higher speeds. Eventually the noise prohibited running the spindle at high speed so they used it at lower rpms to get through the backlog of work they had. We worked closely with our customer to schedule a machine tool repairman to remove the spindle, get it repaired and reinstalled in as little time as possible. The entire process was accomplished without any issues and our customer had their Mazak running sooner than they expected.
CHALLENGE
This Mazak Quick Turn Nexus 100-II spindle arrived at Northland Tool and Electronics for a full breakdown and evaluation. After disassembly, we discovered that the rear bearings had failed from coolant contamination. The coolant had washed out the grease and started to contaminate the grease all the way down in the #3 bearing. The sensor ring has a damaged tooth as well. Lastly, the o-rings, socket screws, and shrink tubing were worn and will need to be replaced.
SOLUTION
The following actions were performed on this Mazak Quick Turn Nexus 100-II spindle:
- Clean, inspect overall dimensions
- Replace bearings
- Repair the sensor ring
- Replace the orings, socket screws, and shrink tubing
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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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.
Spindle contamination is a critical issue that can significantly impact the performance and longevity of your machinery.
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