The latest SystemManager release brings significant improvements to roller bearing calculations, incorporating updates in line with ISO 16281:2025.
For tapered roller bearings, the effective roller length (Lwe) is now defined at the roller cone rather than at the axis, and the standard bearing profile has been slightly modified to reflect current standards.
The approximation function for edge stresses now depends on the position of the disc instead of the disc index, improving accuracy for roller bearings. Tolerance tables have been updated according to ISO 492 (2023-08), covering a wider range of diameters than before.
New diagrams for orthogonal shear stresses allow engineers to visualize shear along different axes, while the free tilt angle is now provided as a result for deep groove ball bearings. For ball bearings, additional pressure is calculated in cases of truncated pressure ellipses, based on the method by Frantz and Leveille, and the notch effect factor can be specified as input.
The new version also enables evaluation of roller end-shoulder contact, with the roller end geometry defined by a radius and center point, and the contact ellipse displayed in a diagram for detailed inspection.
Additionally, the SKF and NSK bearing databases have been updated, ensuring engineers have access to the latest catalog data for all calculations. These enhancements make the SystemManager an even more powerful tool for precise, standard compliant roller bearing analysis across complex drivetrain systems.