Schaeffler applies cookies to secure an optimal use. With the further use of this website you accept the application of cookies. More Information

Bearing Concepts

Innovative Bearing Concepts for the Powertrains of the Future

I. Introduction

II. Future requirements for rolling bearings

III. New bearing concepts

Figure 1 Comparison of ultra low friction tapered roller bearings

Figure 2 Adjusted tapered roller bearing supports (left) versus locating/non-locating bearing supports (right)

Figure 3 Comparison of the dimensions of a deep groove ball bearing and an angular roller unit with the same load rating

Figure 4 Comparison of the design principle of a tapered roller bearing and an angular roller unit (ARU) (left) as well as loading conditions for an ARU with preferred direction (right)

Figure 5 Mounting position of an angular roller unit (ARU) in a six-speed manual transmission on the transmission output shaft

Figure 6 Simulation of friction (top) and rating life (bottom) for the 5th gear of a manual transmission

Figure 7 Comparison of the simulated friction torque and the friction torque measured on the test stand for the new ARU bearing design

Figure 8 General design of the test stand used to validate the rating life calculations for the new ARU bearing design

Figure 9 Increase in radial load capacity and reduction of design space requirements and weight through an improved design using an RNU308-E-XL type cylindrical roller bearing as an example

Figure 10 Increase in robustness against WEC damage with Durotect B

Figure 11 General measures against current damage to bearings

Figure 12 Bearing concept requirements for electric drives

IV. Integrated bearing systems

Figure 13 Integration of bearing systems using a bearing cartridge for a hypoid drive as an example

Figure 15 Bearing with integrated resolver

Figure 14 Locating/non-locating bearing supports as a compact unit with a shaft and gear teeth for a hydraulic auxiliary drive in commercial vehicles

V. Summary and outlook

The digital version of the Schaeffler Symposium 2018 “Mobility for Tomorrow” conference transcript