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# Rolling bearing analysis

The rolling bearing analysis software calculates the life of rolling bearings according  ISO/TS 16281 considering the inner geometry of the bearing. Considering the load distribution within the bearing, clearance and tilting angle will affect the resulting bearing life.

Following bearing types are currently considered:

• Radial deep groove ball bearings
• Axial deep groove ball bearings
• Radial angular contact bearings (single and double row)
• Axial angular contact bearings (single and double row)
• Four point bearings (considered as radial or axial bearings)
• Three point bearings
• Spherical ball bearings (single and double row)
• Duplex bearings
• Radial cylindrical roller bearings (single and double row)
• Radial tapered roller bearings (single and double row)
• Axial tapered roller bearings
• Radial spherical roller bearings (single and double row)
• Axial spherical roller bearings
• Axial cylindrical roller bearings
• Cross roller bearings (considered as radial or axial bearings)
• Angular roller bearings (considered as radial or axial bearings)

Additional types of bearings will be added in the future.

Supported bearing types

The inner geometry of the rolling bearing is provided by the user, but it can also be approximated from the load capacities by the software. The calculation returns the pressure distribution between the rolling elements and the reference life according ISO/TS 16281 for a given loading (force and moment or tilting). A simplified calculation of a deep groove ball bearing is also available online.

In addition to the calculation of a single bearing also bearing sets can be considered. Examples would be a set of angular contact bearings, a 8-point bearing for a slewing ring as combination of two four point bearings or a combination of cylindrical roller bearings in a planetary gear.

The following effects are considered:

The most important results of the bearing calculation are:

• Load distribution within the bearing
• Contact stress between rolling Elements and races
• Reaction forces/moment and displacements/tilting angles
• Bearing life according to ISO/TS 16281 and ISO 281
• Bearing stiffness matrix
• Contact angle under load for ball bearings