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 MoreMatsuura MC-600V Spindle Repair
The Matsuura MC-600V is a CNC vertical machining center. It comes equipped with a grease lubricated and coupling driven spindle capable of running up to 8,000 rpm.
CHALLENGE
When we received this spindle for evaluation, it was noisy when rotated by hand. Upon breakdown, our technician discovered that the rear housing cover was coated with sticky coolant residue. Further investigation revealed that the #1 front bearing had failed, and the rear bearing showed contamination and early signs of failure. The tooling taper was pock-marked with excessive runout measured at >9µ, and additional wear showed on the face of the taper.
Gripper fingers (collet) were significantly worn. The rear drawbar was contaminated and measured with low tool retention force due to several crushed Bellevilles.
SOLUTION
After cleaning and evaluation, we replaced Bellevilles, grippers, seals, o-ring, screws, and all bearings. A kiss grind was required to resurface the worn face and remove pock marks on the tooling taper.
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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Repair History - Here are examples of similar spindle repairs that may contain additional information that will help you. If you have additional questions, please contact us.
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