ceramic hybrid bearing

Lily ceramic ball bearing is a specialized manufacturer of various ceramic ball bearing,ceramic ball bearings,hybrid bearing,hybrid bearings,ceramic hybrid bearings,ceramic hybrid bearing,full ceramic bearings,hybrid ball bearings,hybrid ball bearing.

For very high running speeds ball bearings are less suitable because of the additional centrifugal load of the, with cage speed rotating balls. Balls of small diameter or low density are desirable to limit the centrifugal load.

The centrifugal load is described by F= -mT2R where m is the weight of the ball. Because the density of silicium nitride is 60% of steel, the centrifugal load is reduced by using these balls with 60%. As a consequence the running speed can be increased up to 30%.

Because the E-modulus of silicium nitride is about 1.5 times that from steel, a smaller contact surface exists with the consequence of a high contact pressure. So, the benefit of a small centrifugal load is limited by the large E-modulus. From Hertz theory it follows that the maximum load for the combination steel- silicium nitride reduced with 30%.

A decrease of 60% centrifugal loading in combination with a 30% decrease in load capacity finally results in an increase of running speed with only 15%.

A third effect, that frictional heating between the ceramic balls and the steel rings is less, further positively affect the maximum running speed.

Hybrid ceramic ball bearings can last up to ten times longer when compared to an all-steel bearing, reducing machinery down-time, and ultimately, maintenance costs. Ceramic¡¯s substantially higher wear resistance, ability to work well in difficult running conditions and electrical insulation properties makes it the best option for electric motors, professional hand tools and fluid machinery.

In high speed applications ceramic bearings offer two significant advantages ¨C Ceramic rolling elements have low density and greater stiffness. This reduces friction which, in turn, reduces heat and vibrations.

Catalogs :

Miniature Ball Bearing:
BORE: 1mm to 9mm (Open)
BORE: 1mm to 9mm (Shielded)
BORE: .0400" to .3125" (Open)
BORE: .0400" to .3125" (Shielded)

Flanged Ball Bearing:
BORE: 2mm to 12mm
BORE: .0937" to .5000"

Miniature Thrust Ball Bearing:
BORE: 2mm to 10mm