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
Okuma ES-V4020 Spindle Repair
The Okuma ES-V4020 is a CNC vertical machining center. It comes fitted with a grease lubricated and belt driven spindle capable of running up to 8,000 rpm.
This Okuma ES-V4020 arrived at our facility for a full breakdown and evaluation. Upon assessment, we found that the front bearing cage was broken. It seems to have failed from long use and contamination. We also noted that the taper had 6 microns of runout. The inner spacer had spun on the shaft, damaging the shaft journal and spacer. Lastly, the bellevilles were broken and the drawbar was worn.
The following actions were performed on this Okuma ES-V4020 spindle:
- Clean, inspect overall dimensions
- Kiss grind the tooling taper
- Grind, chrome plate, and finish grind the shaft journal
- Manufacture a new bearing spacer
- Replace bearings, seals, and bellevilles
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.
Does your spindle need repair? GET A QUOTE TODAY
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.
Okuma HF503 Spindle Repair
This Okuma HF503 spindle had a low growl that was heard when the spindle was spun by hand incoming. After disassembly and evaluation, we noted… [...]
Okuma Crown L1030 Spindle Repair
This Okuma Crown L1030 spindle was sent in for a full breakdown and evaluation. Upon inspection, we noted that there was a catasrophic failure of… [...]
Okuma HF-802 Spindle Repair
This Okuma HF-802 spindle was partially disassembled incoming. The customer provided a replacement shaft and a quill. The customer also stated that the original OEM… [...]
Okuma HK802 Spindle Repair
Our customer sent in this Okuma HK802 spindle due to excessive vibration. Upon disassembling the spindle, we noted that the front bearings had coolant sludge… [...]
Okuma ES-V4020 Spindle Repair
This Okuma ES-V4020 arrived at our facility for a full breakdown and evaluation. Upon assessment, we found that the front bearing cage was broken. It… [...]
Okuma Cadetmate Spindle Repair
This Okuma Cadetmate spindle arrived at Northland Tool and Electronics for a full breakdown and evaluation. Upon disassembly we found that the front bearings failed… [...]
Okuma Multus B300 Spindle Repair
Our customer indicated that they were sending us this Okuma Multus B300 spindle because of a crash. They measured shaft pilot runout at .0005” in… [...]
Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More