Performance classes

SKF Explorer bearings

In response to the ever-demanding performance requirements of modern machinery, SKF developed the SKF Explorer performance class of rolling bearings.
SKF Explorer tapered roller bearings realized this substantial improvement in performance by optimizing the internal geometry and surface finish of all contact surfaces, combining the extremely clean and homogenous steel with a unique heat treatment, optimizing the roller end / flange contact area and cage and improving the roller profile and the quality and dimensional consistency of the rollers.
These improvements provide the following benefits:
  • higher load carrying capacity
  • improved wear-resistance
  • reduced noise and vibration levels
  • less frictional heat
  • significantly extended bearing service life
SKF Explorer bearings reduce environmental impact by enabling downsizing and reducing both lubricant and energy use. Just as importantly, SKF Explorer bearings can reduce the need for maintenance and contribute to increased productivity.
The designations of SKF Explorer bearings are shown coloured blue in the product tables. The bearings retain the designation of earlier standard bearings. However, each bearing and its box are marked with the name “SKF Explorer”.
Other standard SKF tapered roller bearings can be manufactured in the SKF Explorer performance class on request. These bearings are identified by the designation suffix PEX.

SKF Energy Efficient (E2) bearings

To meet the ever-increasing demand to reduce friction and energy use, SKF has developed the SKF Energy Efficient (E2) performance class of rolling bearings. SKF E2 tapered roller bearings are characterized by a frictional moment in the bearing that is at least 30% lower when compared to a same-sized standard SKF bearing.
The bearings realized this substantial reduction of the frictional moment mainly by optimizing the internal geometry, number of rollers, surface finish and redesigning the cage.
Reduced operating temperatures improve lubrication conditions and enable extended lubrication intervals or higher speeds. The lower mass of the roller and cage assembly and reduced inertial forces in the bearing reduce the risk of skidding and smearing. Typical applications include wind energy transmissions, railway transmissions, ship transmissions and other heavy industrial transmissions.
Typically, SKF E2 tapered roller bearings are available on request. For additional information, contact the SKF application engineering service.
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