These X-life quality FAG E1 spherical roller bearings have no centralrib on the inner ring and are therefore able to use longer barrel rollers. In addition, the bearings benefit from improved kinematics, optimised surfaces and are made from higher performance materials. As a result, the basic dynamic load rating and basic rating life is significantly improved. Surface improvements on the rolling elements also enablea lubrication film that is capable of higher loads. Improved osculation conditions and additional profiles further optimise the rolling contact.