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 VF-3 Spindle Repair
The Haas VF-3 is a larger version of its counterpart VF-1 and VF-2 machines. This spindle we repaired is a high-speed option from Haas that is belt-driven up to 15,000 RPM and has grease lubrication.
When this spindle arrived at Northland Tool and Electronics the first thing we noticed was the spindle was difficult to turn by hand. Upon further inspection and disassembly, we found that the main cause of failure was the rear bearing having a disastrous failure. After the spindle was apart, the critical dimensions were measured (bearing journals, bearing shoulders, housings, and taper). No significant dimensional deviations were noted on any critical dimensions, however, the taper was visibly in poor condition.
The following actions were performed for this Haas VF-3 spindle repair:
- Replace bolts and o-rings
- Replace ceramic bearings
- Kiss Grind the 40 ID taper
- Install new drawbar assembly that was supplied by customer
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 Mini Mill Spindle Repair
The customer had called to let us know that his Haas Mini Mill spindle was getting excessively hot and that there was a good amount… [...]
Haas VF-2 Spindle Repair
Upon arrival to Northland Tool and Electronics, this Haas VF-2 spindle was very hard to turn by hand and drawbar force measured with low retention. … [...]
Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More