In November 2008, SKF President and CEO Tom Johnstone announced the launch of spherical and cylindrical roller bearings that meet the stringent SKF energy-efficient performance class criteria. Extensive testing results confirm significant friction reduction compared with SKF standard bearings.
SKF energy-efficient spherical roller bearings exhibit at least 30 percent less friction and corresponding reduced energy consumption, considerably lower bearing operating temperature, extended grease life and extended relubrication intervals. For industrial ventilation fan applications, five sizes of open bearings are now being introduced, as part of the total SKF energy-efficient solution for fans. Additional sizes will be offered based on customer demand.
The first SKF energy-efficient cylindrical roller bearings being introduced are of the NJ series, which are designed to accommodate heavy radial loads, but also axial loads in one direction.
Compared with the current SKF standard NJ series bearings, the new SKF energy-efficient cylindrical roller bearings exhibit a friction reduction of at least 30 percent in axial-loaded applications and have a higher dynamic load rating. These new ultra-low friction bearings are intended for a wide range of applications, initially for industrial and wind energy transmissions.