As a typical gear transmission system, the spiral bevel gear
system has been used in main reducer of automobile driving axle; particularly dynamic response is one of the most important factors affecting NVH performance; its characteristic research has attracted the attention of domestic and foreign scholars.
Spiral bevel gear
have been found widely used in helicopter, truck transmissions and reducers for transformation of rotation and torque between intersected axes.
In 1990, Lampin purchased the assets of Johnson & Bassett of Worcester, "including the line of MITRPAK Spiral Bevel Gear
Drives that are now manufactured in Uxbridge.''
Most studies were related to spiral bevel gear
modeling and tooth contact analysis (TCA); Tsai and Chin  developed mathematical modeling of the tooth surface geometry for bevel gear pairs based on the basic gearing kinematics and involute geometry along with the tangent planes geometry.