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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 angular contact ball bearings realized this substantial improvement in performance by optimizing the internal geometry and surface finish of all contact surfaces, redesigning the cage, combining the extremely clean and homogenous steel with a unique heat treatment and improving the quality and consistency of the balls.
These improvements provide the following benefits:
  • higher dynamic load carrying capacity
  • less sensitivity to heavy axial loads
  • improved wear-resistance
  • reduced noise and vibration levels
  • less frictional heat
  • significantly extended bearing service life
These 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 table. The bearings retain the designation of earlier standard bearings. However, each bearing and its box are marked with the name “SKF Explorer”.

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 angular contact ball bearings are characterized by a frictional moment in the bearing that is at least 30% lower when compared to a same-sized standard bearing. Due to the reduction of the frictional moment, SKF E2 double row angular contact ball bearings run up to 30 °C (55 °F) cooler than standard bearings. This extends grease life and potentially bearing service life.
The bearings realized the substantial reduction of the frictional moment by optimizing the internal geometry of the bearing and applying a new, low-friction grease.
SKF E2 double row angular contact ball bearings are available in the 32 and 33 dimension series. The bearings are equipped with a shield on both sides and lubricated for the life of the bearing.
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