This technical article focuses on determining the maximum power transfer capacity of
spur gears mounted on shafts with spline bushes using an interference fit. Spur gears
play a crucial role in power transmission systems, and the use of spline bushes with
an interference fit provides enhanced stability, load distribution, and safety. The gear
is mounted on the spline bush, which, in turn, is mounted on the shaft using
interference fit. This arrangement ensures that in case of torque overload, the
interference fit allows the spline bush to slip preventing mechanical structural failure
of the transmission elements. Understanding the maximum power capacity of these
gear systems is essential for ensuring reliable and efficient operation. The article
provides an overview of spur gears, spline bushes, and the benefits of an
interference fit. It explores the factors influencing power transmission and presents
analytical methods for calculating critical parameters. A case study calculation is
included to demonstrate the application of the discussed methods. Design
considerations and optimization techniques for enhancing power capacity are also
discussed. By determining the maximum power transfer capacity, engineers can
make informed design decisions, optimize gear systems, and ensure both reliable
power transmission and safety.