Vibration testing and balancing are critical components of rebuilding high speed electric motors.

Balancing overview

Vibration is a highly destructive force in rotating machinery.  It can be caused by rotor unbalance, loose bearing fits, shaft shoulder runout, bearing housing mis-alignment, and shaft deflection.  In addition to shortening bearing and motor life, excessive vibration can be transmitted to the driven machine, negatively affecting machine performance and increasing operator fatigue. 

Many repair shops advertise that they balance every rotor to ISO 1940 yet are not familiar with the standards regulating overall vibration.  Endeavor Technologies recognizes that balancing is just part of the picture, and records the overall vibration of each motor during final testing to verify that it meets or exceeds the relevant DIN ISO, IEC, or JEC specification. If an assembled motor is found to be out of tolerance, vibration spectrums are analyzed to determine if the problem is unbalance or something more complex before corrections are made.  Vibration spectrums are recorded and archived for motors with especially high speed or low vibration requirements.  Endeavor Technologies also offers precision balancing for spindles, impellers/fans, rotors for built-in motors, and other components.  If your part requires a special balancing arbor or fixture we can construct it.

Our Balancing Equipment:

Schenck Trebel  H3BU (capacity 1000 lbs)
Schenck Trebel  H1BK (capacity 30 lbs)

Our Vibration Testing Equipment:

Schenck VT60 portable vibration analyzer with balancing software
Pruftechnik Vibrotip