Robodrill Spindle Repair and Test
Jesse is running this Robodrill up to 20,000 RPM, and will be bringing the spindle into the spindle balance room to ensure that the spindle will run without any issues. This was a straight spindle repair.
In this spindle repair process you can see how much larger the Johnford St 80 spindle is compared to a basic spindle. In this photo Denton is holding a robodrill from a previous spindle repair. In comparison the Johnford St 80 is a much larger spindle. Northland Tool handles spindle repairs of all sizes. 
In this video, Scott is showing a recent GPG of a Robodrill spindle.
- GE Fanuc Robodrill
GE Fanuc Robodrill
20,000 rpm
Grease lubricated
This Robodrill spindle is from a customer that we initially helped by trouble shooting their spindle problems and since then we have done all their repairs for several years. . Before they used us for repair they were exchanging spindles with the OEM. They were not happy with the price, delivery and they were having part quality issues. We did an on site evaluation of their process and found high vibration on the OEM exchange spindles. The OEM was not sending the spindles to them with the front balance ring installed. The customer was forced to remove the ring from the bad spindle and use it on the replacement. This ment the balance was never to spec as the spindle must be trim balanced as an assembly on a proper test stand. Balancing a spindle in the machine is extremely difficult because the spindle is now rigid mounted in the machine and the balancing probes have a difficult time finding the correct phase angle and amplitude of the imbalance. Once we addressed the balance issue the part quality problems disappeared. We are able to keep our customer running with our quick repair times and our pricing is less than the OEM.