SKF Japan exhibits bearings with a 30% reduction in frictional losses

SKF Japanese company has developed a frictional losses reduced by 30% of the deep groove ball bearings and tapered roller bearings, and the "11th Mechanical Components & Materials Technology Exhibition" (2007, June 27 - 29, Tokyo Big Sight International Exhibition Center) in Shown.

The deep groove ball bearing reduces the number of steel balls from 11 to 8, and uses a lighter, more lubricious polymer material on the retainer, and also takes a lot of work on the shape, reducing the inside of the bearing. friction. However, since the number of steel balls is reduced, the load resistance is worse than the original product. For use, it is suitable for medium and low load electric motors , pumps and compressors . The initial application sizes are 6205 ~ 6206, 6309 ~ 6316, including open and dust cover .

Tapered roller bearings are developed as products that can withstand high loads. The friction loss was successfully reduced by 30% by adjusting the number, size, and internal shape of the rollers to the same level of load resistance and using a processing method that easily formed an oil film around the rolling elements. Mainly for heavy industrial applications, marine applications and transmission of extrusion molding machines. The initial application size is 220 to 600 mm in diameter.

Although the friction loss of the bearing can be reduced by 30%, but from the point of view of the overall efficiency of the machine, "when in the gear box of the wind turbine will be replaced with a new set of bearings 5 tapered roller bearings, each turbine only increased by 0.5%." (Japan SKF). However, "in the long-term use, the difference in efficiency will be reflected" (Japan SKF).

The prices of both bearings are undetermined. Production is scheduled to begin in September-December 2007.

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