Custom Transmission Gear Shaft for High-Performance and High-Demand Applications

1)Features of Transmission Gear Shaft

• Modern gear shaft design no longer relies on a single rod-like structure, but increasingly adopts an integrated ‘gear-shaft’ configuration where the shaft is formed as a single unit with the gear. This reduces connection points and enhances overall rigidity.​
• Through topology optimisation and finite element analysis, material is removed from non-critical areas whilst maintaining strength, achieving weight reduction. This lowers rotational inertia and improves system response speed.

2)Functions of Transmission Gear Shaft

• One of the core functions is to optimise stress distribution at the root and shoulder of the teeth. By employing designs such as large-displacement gears and rounded transitions, stress concentration is significantly reduced, thereby delaying the onset of fatigue cracks.
• During design, precise calculations of the bending stiffness and torsional stiffness of the gear shaft are required to ensure its deformation under load remains within permissible limits. This guarantees meshing accuracy and the precise transmission of motion.

3)Applications of Transmission Gear Shaft

Widely employed in automotive transmissions, auxiliary power units for aero-engines, high-speed industrial compressors, and other applications where space is severely constrained yet demands for power and reliability are exceptionally high. In these contexts, every gram of weight and every millimetre of space proves critical.