Electric Motor Rotor Balancing

Dynamic motor balancing with sugru and an iphone.

Electric motor rotor balancing.

Electric motors are almost always well balanced when they leave the motor manufacturer. All rotors must be balanced whether new from the factory oem or recently repaired. Many shop or machine tools have big motors and many big motors vibrate. We offer a flexible range of balancers to accommodate a variety of rotor sizes as well as the different levels of automation required to match production volume.

Electric motor balancing is critical for extending the life of electric motors used in a wide range of commercial and industrial applications an unbalanced motor runs the risk of damaging or even destroying the motor shaft and bearings causing added system expense and downtime that can affect your operations and or production. Select a balance quality grade g number from table 1 based on rotor type. To improve the balance condition of most high speed flexible rotors the following. Basic methods of balancing rotor can be balanced by aligning the rotor mass with the bearing centers norfield 2006.

Mainly used in production line balancing such as electric motor rotor manufacture and the like. Motor rotor balancing can be a confusing topic leading to sometimes heated conversation especially in motor shops where cultures have evolved so differently over the years. The impact of shop balance technique is most important when the rotor is relatively flexible and or long as is common with most turbomachinery. We have cast millions of rotors and have worked with.

Using the standard the use of the standard involves the following steps. The methods employed in shop balancing can have a profound impact on the resulting balance condition of the rotor. Balancing and its terminology if the standard is to be understood and used properly. Rotor balancing view motor assembly.

But the methods of balancing vary as does the quality of the work. An electric motor s rotor like any rotating mass cannot become out. In some cases this is a good thing but usually it is not. Ramco electric motors is your contract manufacturer for low to mid volume ac induction switched reluctance and brushless dc stators rotors and rotor shaft assemblies.

Here are some easy troubleshooting methods to determine the cause of unbalance in the motor. The reader is directed to the paper s balance terminology section for a summary of terms used in this paper. But occasionally motor unbalance problems are picked up with vibration monitoring tools such as the oneprod hawk.