SKF - Rolling Bearings

Performance classes
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.
SKF Explorer bearings are shown with an
asterisk 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”.
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
SKF 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 († matrix 2, page 501). The
bearings are equipped with a shield on both
sides and lubricated for the life of the bearing.
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