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
Weiss GHK 176239 Spindle Repair
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…
This spindle showed evidence of being crashed with significant damage to the tooling taper ID, face, and chamfer. The front roller and angular contact bearings were severely contaminated and worn.
Measurement of the front bearing journal shoulder showed high runout. Most of the Belleville washers were cracked, and a drawbar spacer was found to be damaged. The gripper fingers were excessively worn. The actuator had damage to (4) surfaces: adjustment cap face, housing ID shoulder, piston OD shoulder, and chamfer.
This model of Weiss spindle was manufactured to be grease-injected, which requires costly maintenance of a separate lubrication system. We converted the spindle to permanent grease, which will benefit the user by eliminating these future maintenance costs.
This rebuild included the following actions by NTE repair technicians:
- Manufacture & install a new drawbar spacer
- Rework damaged actuator surfaces
- Grind, chrome plate & finish grind the tooling taper ID
- Kiss grind the front journal shoulder
- Replace all bearings, Bellevilles, grippers, seals, o-rings & assembly screws
- Adjust preload, assemble, balance and break in
- Final quality control inspection
Every Northland Tool repair is covered by a comprehensive 1-year warranty.
DETAILED CAUSE OF FAILURE
Evidence of where the spindle crashed
Broken Belleville washers needed to be replaced
Bearings were severely worn and contaminated
This roller bearing was packed with contaminated lubricant
Gripper fingers were worn and needed to be replaced
A close-up image showing how roller bearings became deformed and broke the outer race
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