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SKF improves the performance of small sealed spherical roller bearings

06 December 2015

SKF has upgraded a range of small-size, sealed Explorer spherical roller bearings to offer lower friction, reduced operating temperatures, higher limiting speed ratings and reduced maintenance.

The range uses a novel seal design, given the designation ‘RS’, which reduces overall friction in the bearing by up to 20 percent. In representative running conditions, this translates into calculated annual energy savings of up to 292kWh.

Moreover, reduced friction means they operate at lower temperatures, permitting maximum operating speeds up to twice those of the existing range of sealed SKF spherical roller bearings that the upgraded range replaces.

Lower bearing operating temperatures extend the life of the bearing grease allowing lubrication intervals up to twice those of current designs and meaning many more applications can now be considered re-lubrication-free.

The new RS seal is designed to operate with an optimized lip pressure reducing seal friction by up to 50 percent. In addition, the outer ring groove has been redesigned for reliable sealing and secure retention. RS seals have a rubberised side face that resists scratches and corrosion more effectively than metallic designs.

The new RS range includes 37 sizes with outside diameters up to 180mm. This range of products replaces the current ‘CS’ seal design for these sizes.

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