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
Mori Seiki Dura Turn Spindle Repair
Our customer informed us that their Mori Seiki Dura Turn spindle was generating excessive heat during operation and that the part quality deteriorated to the point they wanted to get it repaired. When the spindle arrived at Northland Tool and Electronics the shaft felt rough when turned by hand. Our evaluation showed that over time coolant had found its way into the front bearings and washed the grease out of them. This removes the lubrication from the bearings causing rolling element to bearing raceway contact and eventually bearing failure. We also inspected the labyrinth, shaft, and housings for damage or wear. There were no dimensional deviations found.
The following actions were performed on this Mori Seiki Dura Turn spindle:
- Clean all parts of the spindle
- Replace all bolts and o-rings
- Replace bearings
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.
DETAILED CAUSE OF FAILURE
Spindle has been disassembled and is waiting for evaluation for scope of work and cause of failure.
This shows some of the coolant that was inside the spindle puddled up on the front flange of the shaft.
This is the interior side of the front cover. It shows the residue of coolant and grease mixture that caused the spindle to fail.
These front bearings have had the grease washed out of them by the coolant that migrated through the front cover.
Does your spindle need repair? GET A QUOTE TODAY
Mori Seiki SL-00 Spindle Repair
The front bearings in this Mori Seiki SL-00 spindle failed from contamination with coolant, which had entered through the front of the spindle. The grease… [...]
Mori Seiki CL-20A Spindle Repair
This Mori Seiki CL-20A spindle was sent to us because of a crash. Upon inspection we noted that the front bearings were slightly contaminated and… [...]
Mori Seiki CL-203B Spindle Repair
Our customer sent in this Mori Seiki CL-203B spindle due to the sound of the bearings and elevated temperature during operation. After the spindle was… [...]
Miyano ABX Spindle Repair
Our customer sent us this spindle because it was making out of spec parts. It was leaving chatter marks on the work piece. Upon inspection,… [...]
Miyano BNC-34C Spindle Repair
This Miyano BNC-34C spindle was sent in for a full breakdown and evaluation. Upon inspection, we noted that there was liquid contamination throughout the spindle. … [...]
Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More