Calculation methods of the attainable life have been redefined over the years to take into account not only classical material fatigue, but also influences from lubrication and cleanliness.
Preload vs. life
Life is a function of the setting of the bearings. Our designs are optimized to work under a wide range of preload rather than a slight axial end play condition that is very difficult to achieve practically.
Load line vs. life
The position of the load line relative to the bearing centre line is evaluated for various driving conditions in order to find the most appropriate range.
Preload vs. clamping force
Determination of the admissible range of clamp load provided by the wheel nut is essential to assure the correct preload of the bearing arrangement.