Catastrophic bearing failure was the main cause of this spindle malfunction Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication……Read More
Quaser SKF Spindle Repair
This spindle was sent to us by our customer in South Africa. We support all types of machines in any location. Call us if you need help with shipping.
This Quaser SKF spindle was sent in for a full breakdown and evaluation. Upon inspection, we found that the rear roller bearing failed from coolant contamination, the bearing cage was destroyed, and the rolling elements were loose in spindle. It was also noted that the rear housing cover and labyrinth was full of sticky coolant residue, probably from a leaky rotary union. Two of the threaded holes on the OD of the rear cover were unplugged, allowing contaminants to directly enter the labyrinth. Lastly, the tooling taper had some pock-marked wear and the gripper fingers (collet) were worn.
The following actions were performed on this Quaser SKF spindle:
- Clean, inspect overall dimensions
- Kiss grind tooling taper
- Put set screws in (2) open holes in rear cover
- Replace bearings, Bellevilles, gripper fingers, seals, o-rings, and assembly screws
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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Running this spindle too long caused deformed ball bearings and damage to the outer race Damage to the outer race is consistent with prolonged operation after spindle exhibited initial signs of needing to be rebuilt Every spindle rebuilt by North…Read More