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
Grosite 4B5-111-5D00RVB Spindle Repair
The Grosite 4B5-111-5D00RVB spindle is grease lubricated, belt driven, and capable of running up to 6,000 rpm.
When this Grosite 4B5-111-5D00RVB spindle arrived at our facility it was missing the bearings completely. This could mean that our customer attempted to repair it themselves and decided to send it in after they got in over their heads. They did supply the bearing numbers so we could replaced the bearings with OEM specification matches. We also noted dried coolant residue in the front of the spindle, likely due to a failure of the Inpro seal. No dimensional deviations were noted for this repair.
The following actions were performed on this Grosite 4B5-111-5D00RVB spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
- Replace Inpro seals
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