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
Haas ST-10 Spindle Repair
The Haas ST-10 is a high performance turning center. It comes equipped with an oil mist lubricated and belt driven spindle that is capable of running up to 6,000 rpm.
The first thing noted for this Haas ST-10 spindle was that the bearings were noisy when rotated by hand in assembly incoming. Upon a full disassembly and evaluation, we found that the front bearing had suffered a catastrophic failure, the cage was destroyed. From this failure, the front bearing journal shoulder had been damaged and had extremely high runout >10µm. No other significant dimensional deviations were noted for this repair.
The following actions were performed on this Haas ST-10 spindle:
- Clean, inspect overall dimensions
- Kiss grind the front bearing journal shoulder
- Replace all bearings, o-rings, and assembly screws
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.
Haas DT-1 Spindle Repair
This Haas DT-1 spindle arrived to NTE after around 1,000 hours of high speed cutting of aluminum. The customer stated there were no significant crashes… [...]
Haas HL-6 Spindle Repair
This Haas HL-6 spindle was received as only a shaft and bearings. After we completed a full breakdown and evaluation of the spindle, we found… [...]
Haas TL-4 Spindle Repair
Our customer delivered this spindle to Northland Tool with complaints that it was very noisy during operation. Right away during our incoming inspection, we noted… [...]
Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More