Rotation sensor bearings resist interference

Edited by the Engineeringtalk editorial team Apr 22, 2005

A new rotation sensor bearing is less susceptible to the strong magnetic fields generated from electrically driven motors and other items into which sensor bearings are now integrated.

NTN has developed a rotation sensor bearing that is less susceptible to the strong magnetic fields generated from electrically driven motors and other items into which sensor bearings are now integrated.

In recent years industrial machinery has been shifting towards the use of electrical control to make machinery simpler, automate processes and reduce the load on the environment.

The sensors required for this kind of electrical control are now widely used.

Demand has increased for bearings with these built-in rotation sensors as the equipment can be made more compact with easier installation.

The rotation sensor bearing made by NTN is proving popular with the majority of customers who say it is "resistant to surrounding magnetic fields".

In ordinary rotation sensor bearings, problems such as a loss of the sensing function or no output signal occur due to the strong magnetic field generated during startup of high-output motors.

The new NTN bearing is highly resistant to magnetic fields which was achieved by reviewing the design of the structural components, the material of the magnetic encoder and the magnetic sensor itself.

The sensor bearings initially come in six sizes from bearing number 6202 through 6209 and sales will start in mid-April, 2005.