Through applying the 3D finite element method (FEM), the investigation into a spur thin-rimmed gear tooth deformation was performed. The developed geometrical and FEM models without manufacturing errors of the engaged solid pinion and thin-rimmed wheel, enabled the torque transmission and the tooth load distribution corresponding to actual wheel structure and its deformation as a whole. For the wheel body with thin rim supported by middle web, the chosen geometrical parameters of interest were

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... he rim and web thickness, while the value of tooth face width was kept constant. A spur tooth deformations were determined and analysed through the deformation modus of the loaded tooth mid plane along the tooth height and along the face width, for the certain gear body flexibility.