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 MoreSchneider CCP 103 Spindle Repair
This Schneider CCP 103 is a grease lubricated and pulley driven spindle that is capable of running up to 100 rpm.
CHALLENGE
This spindle is part of a vertical tandem on a machine that polishes ophthalmic lenses to ultra-precise prescription specification. This is the lower spindle which slowly rotates the workpiece while the upper spindle polishes the lens. This particular spindle presented an unusual work scope in that the pulley had somehow been forcibly separated from the rear of the shaft. When this occurred, the dampening assembly contained in the pulley was also completely destroyed. We also observed that the interior of this spindle was heavily contaminated with polishing slurry, more than what is typical for this model. This contamination not only affected the bearings, but caused light corrosion on other internal components.
SOLUTION
We machined the sheared remnants of the pulley assembly screws out of the rear of the spindle shaft, and thoroughly cleaned all the other components. We then reassembled the spindle with all new bearings, seals, o-rings and stainless assembly screws. To refurbish the dampening system, we installed a new, custom-fit graphite piston and an improved linkage assembly.
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.
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