Endeavor Technologies is proud to be a Franz Kessler authorized service partner for rebuilding AC and DC spindle motors in the USA.
Franz Kessler manufactures an extraordinary array of highly engineered motorized spindles and spindle motors for machine tool builders. Whether your need is high power output in a small package, high speed, ultra low vibration, or a combination of all of these Kessler has the solution.
These technically sophisticated motors require special training, factory support, and a knowledge of the relevant standards to ensure optimal operation after servicing.  Please click here to Contact Us. 

From ABA to Z&B grinders, and everything in between--Chiron machining centers, Pomini roll grinding machines--as an authorized service partner, Endeavor Technologies is equipped, trained, and supported. We guarantee to return your motor to the factory specification.

Endeavor Technologies has the required tooling, experience, and factory supplied parts to rebuild the motors on roll grinding machines manufactured by Pomini and Waldrich Siegen. These sleeve bearing motors produce ultra low vibration partly through the use of sleeve bearings. These bearings must be perfectly aligned with special tooling while the motor is assembled on a granite surface plate. The felt sealing material is not commonly available and new seals must be installed and the fit adjusted correctly. After assembly, the bearing break-in period is 32 hours during which the oil temperature and vibration is carefully monitored.

Don't take a chance having your Kessler spindle motor "repaired".  Send it to Endeavor Technologies for comprehensive rebuilding and testing.