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
Omlat 0.7132.000 Spindle Repair
Omlat is a spindle manufacturer that many wood routing machine tool OEM’s use on their machines. This spindle is grease lubricated and stator driven making it capable of running up to 24,000 RPM.
Our customer sent in this Omlat 0.7132.000 spindle stating that the motor kept faulting out. When it arrived at Northland Tool the spindle was seized. We bench tested all the proximity sensors and they all passed, one had some damage but passed as well. During disassembly we noted that the bolts that hold the target wheel to the rear nut sheared and allowed the target wheel to move freely. Due to this, the zero on the target wheel rubbed against the encoder causing damage. Lastly, the HSK tooling taper was worn at the mouth and had high run out.
Damaged encoder sensor: Damaged target wheel:
The following actions were performed on this Omlat 0.7132.000 spindle:
- Clean, inspect overall dimensions
- Replace bearings, bolts, o-rings, bellevilles, encoder sensor, and target wheel
- Repair damage to rear nut
- Grind, plate, grind (GPG) the HSK tooling taper
After reassembly of all components and adjusting bearing preload, we put the spindle through a rigorous break-in and testing procedure to make sure it passes our final quality inspection. See below for the passing test reports:
Front Bearings Vibration Analysis Spectrum: Rear Bearings Vibration Analysis Spectrum:
Motor Analyzer Summary:
This spindle passed our final quality inspection and was returned to our customer with a 1-year warranty.
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Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More