In the harsh operating environment of the typical Cooper bearing, small changes can make big improvements. Consider, for instance, the surface of the rolling elements. The profiling of rollers to avoid stress concentrations (end effects) at the ends of rollers has been industry standard practice for many years, but the geometry of the profile and the resultant effect on the life of the bearing can vary.
Failure to profile rollers would lead to premature failure by initiating spalling failure towards the end of the running surface.Cooper has fine tuned the roller profile on their most popular size range and now uses the theoretical optimum logarithmic profile roller which gives a projected improvement in L10 life of 25% over profiles used previously.
The logarithimic profile can be proportioned to give sufficient depth of relief to be effective at high peak loads and make better use of the length of the roller at light loads compared to conventional profiles.Steve Gates, Cooper Managing Director said: Logarithmic profiling is typical of the Cooper product development over the years.
Cooper engineers are continuously improving our products and elevating quality and performance. Add this to the legendary Cooper reliability and longevity, and you can see why many of our customers find Cooper bearings to be such a good long term investment in the drive to cut costs.