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
Matsuura 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.
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.
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.
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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More Case Studies
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.
Matsuura ES-450HII Spindle Repair
This Matsuura ES-450HII spindle arrived seized to our facility. Upon inspection, we found that the rear roller bearing had catastrophically failed as the inner and… [...]
Matsuura MC-760 Spindle Repair
This Matsuura MC-760 spindle was sent in for a full breakdown and evaluation. Upon inspection, we noted that the bearings failed from contamination. The taper… [...]
Matsuura MC-500V Spindle Repair
This Matsuura MC-500V spindle arrived at Northland Tool and Electronics where we completed a full breakdown and evaluation. After fully disassembling the spindle we found… [...]
Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More