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
Eurotech 730 SLY Spindle Repair
The Eurotech 730 SLY is a production CNC turning center. It comes equipped with a grease lubricated and belt driven spindle capable of running up to 4,000 rpm.
This Eurotech 730 SLY spindle was nearly seized incoming. Upon disassembly, we found that the spindle interior components, including shaft, were covered in rust. The grease in all the bearings was completely washed out and the spindle interior is dry. The inner bearing spacer spun on the shaft, resulting in damage to the spacer ID and both bearing journals. We then measured the critical dimensions and found that the 110mm front and rear bearing journals were severely worn undersized. The front was +2/-60µm and the rear was +2/-70µm (ISO=±5.5µm). No other significant dimensional deviations were noted (shaft taper/face, housing bores).
The following actions were performed on this Eurotech 730 SLY spindle:
- Clean, inspect overall dimensions.
- Grind, chrome plate, and finish grind (GPG) the inner bearing spacer ID
- GPG both front and rear 110mm bearing journals
- Replace ceramic 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.
Does your spindle need repair? GET A QUOTE TODAY
Miyano BX Spindle Repair
This Miyano BX spindle suffered from a severe case of coolant contamination. The front and rear bearings, rear housing, and stator were all contaminated with… [...]
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. … [...]
Miyano Lathe Spindle Repair
This Miyano Lathe spindle was sent in from this long time customer for a typical breakdown and evaluation. Upon inspection, we found oil contamination in… [...]
Running this spindle too long caused deformed ball bearings and damage to the outer race Damage to the outer race is consistent with prolonged operation after spindle exhibited initial signs of needing to be rebuilt Every spindle rebuilt by North…Read More