SKF has introduced a new E2 Energy Efficient Spherical Roller Bearing. The new bearing, which significantly enhances energy efficiency by reduced bearing friction and energy consumption, is ideal for general purpose applications such as industrial fans, blowers and conveyors.

Optimised internal design features and specially formulated grease has been designed by SKF to minimise friction in the bearing. SKF state “The dedicated SKF LESA 2 grease combines fully synthetic polyalphaolefine (PAO) base oil with a unique lithium soap thickener, which offers exceptional oxidation stability and resistance to water, and enables users to get low friction torque, minimal friction losses and quiet running from the bearing. “

SKF used advanced modelling tools to examine the way that components interacted in the existing spherical roller bearing, enabling them to optimise the internal design of the bearing. SKF engineers then re-engineered the cage and improved the surface finish of the rollers and raceways to reduce friction between the rollers and the rolling element lands. The optimised design also maximised the effects of the specially formulated low friction SKF LESA 2 grease.

Using advanced simulation tools and test rigs, SKF was able to calculate the energy savings of the SKF E2 spherical roller bearing against a standard bearing. In laboratory tests, temperature reductions between 10°C - 18°C have been measured for normal speeds and loads. Extended re-lubrication intervals of up to four times can be attributed to the reduction of running temperature which can ultimately lower operating conditions.