Shaft and Bearing Analysis Software

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. It is available as standalone program or integrated into a shaft system calculation.

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)

Following effects are taken into account:

Bearing clearance
Change of clearance because of interference fit and temperature
Centrifugal forces and gyroscopic moments
Elastic expansion of bearing rings
Lubrication for the modified reference life
Profiles of rollers and races
Load spectra
Elastic deformation of outer ring for track rollers

Shaft System Calculation

The shaft system calculation integrates the bearing calculation and supports shaft systems coupled by bearings, gears or belts. Further features are:

Definition of several coaxial shafts using cylindrical or conical elements for inner and outer geometry
Definition of loadings using force/moment loads or easy-to-use elements like helical gears, bevel gears or worm gears
Definition of rigid supports, springs or nonlinear rolling bearings as constraints
Import of shaft geometry as 2D-DXF or 3D-STEP
Calculation of statically indetermined systems
Calculation of deformations considering shear deformations, axial deformation and using a nonlinear beam model
Calculation of natural frequencies optionally with gyroscopic effect, Campbell diagram, critical speeds, 3D animation of modal shapes
Calculation of harmonic response to periodic loads like Imbalance
Calculation of harmonic response to periodic displacements
Calculation using load spectra
Strength calculation according to DIN 743 (2012)
Integration of rolling bearing calculation according to ISO/TS 16281
Integration of ball screw calculation
Selection of rolling bearings from database or own input of bearing geometry. Bearing databases with catalog data from SKF and Schaeffler (FAG, INA) are included
Diagrams for deformation, forces, moments, equivalent stress
Parameter variations with output as tables and diagrams
Definition of coupled housing stiffness matrices
Import of housing geometry as 3D-STEP with automatic meshing and consideration as housing stiffness matrix (and optionally by modal reduction)
3D-elastic parts with consideration of deformations of bearing rings
Calculation of shaft systems like gearboxes
Calculation of planetary gear sets
Connection of shafts by gear pairs (helical, bevel or worm gears)
Connection of shafts by belts
Calculation of rotation speeds
Calculation of load distribution using a coupled FEA beam model
Interface to programs for gear design
Graphics for line load over the width if gears
Configurations to support variants in power flow
Natural frequencies and critical speeds on system level coupled be gear pairs
Display of mode shapes on system level, 3D animated
3D-elastic housings and planet carriers
3D-elastic parts with consideration of deformations of bearing rings and gear bodies for cylindrical gears
REXS-Import/Export for data exchange with other programs

An integration of FEA-based 3D-elastic parts allows to consider housing stiffness, elastic planet carriers, elastic bearing rings or elastic gear bodies.