Insulated bearing Development Background and Concept

In motors used in general industrial machinery, use of inverter control is expanding in order to increase efficiency. Along with this development, cases of a type of damage called electric corrosion have been
seen in bearings.

One way to prevent electric corrosion is to use non-conductive ceramic balls in bearings. However, productivity then becomes an issue. It is also possible to include an insulated housing in the motor, but this requires special parts and assembly processes. To solve these issues, NINE STAR has developed a new insulated bearing that is highly productive and compatible with standard.

Electric corrosion:

When an electrical current passes along the contact point of the bearing races and rolling elements
while the bearing is rotating, sparks are generated in the thin lubricant film and that surface is locally fused
into an uneven shape.

Linqing Nine Star Bearing Science & Technology Co., Ltd 

( Insulated bearing, Hybrid ceramic bearing and  Brass cage DGBB)

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