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What is SABR?

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is a proven shaft, gear and bearing, concepting and design package developed to integrate into the design process and reduce product development time. It provides an intuitive graphical interface allowing all or part of the transmission system to be modelled at a level of detail appropriate to the current design phase. Additionally, it allows the performing of sensitivity studies to determine the effect of different geometric features, bearing types, gear positions etc. with immediate results. The solvers themselves are based on engineering standards as well as Ricardo’s product design, manufacture and testing experience and are continually updated in line with real world test and development programmes.


  • Gear Design - Able to define initial gear sizes and life parallel axis gears using both ISO and Ricardo methodologies, this powerful tool enables non specialists to optimise gear geometry and determine the effect of misalignment on gear life.
  • Bearing Analysis - SABR is able to model deep groove and angular contact ball bearings, tapered, cylindrical and needle roller bearings that are casing mounted or encapsulated within two rotating components.
  • Shaft Design and Analysis - Model transmission shafts, from single section shafts for initial concept sizing to complex multi-node arrangements for full and detailed system analysis, quickly and accurately.
  • Duty Cycle Assessment - Assess multiple load path regimes defined by time, torque and speed inputs.
  • Micro Geometry Definition and Assessment - For any number of loadcases, calculate the misalignments and assess them for macro geometry gear design and rating.
  • Case Study - Provide the 4WD transverse transmission for a World Rally Car team.
  • Case Study - Clean sheet design of a 600Nm, 4 speed, 4WD, power-shift tractor transmission, prototype manufacture and development.

Key Features

  • Simple and intuitive user interface for quick and accurate model building
  • Coupling, point loads and torque dependant load applications
  • Gear Design for balanced life and to achieve targeted NVH criteria
  • Bearing Analysis with life calculation and stress plots accounting for loading and misalignment
  • Shaft Design and Analysis
  • Duty Cycles with multiple and complex load paths
  • Comprehensive results suite

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