Rear bearing failure from high belt tension. As the customer increased their feed rates the load to the spindle increased. Coolant splashing on the belt and pulley surface and a worn belt caused the belt to slip. The quick fix was to tighten the belt. This solved the slip problem but eventually caused the rear bearings to fail. A new belt is always cheaper than a spindle repair.
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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…