Gearboxes: Gearboxes are essential components in mechanical power transmission systems. A gearbox is a mechanical device used to transfer power from a motor or engine to a driven machine while adjusting the speed and torque. It consists of a series of gears that change the input speed and torque based on the gear ratio. Gearboxes are classified into different types, including spur, helical, bevel, worm, and planetary gearboxes, each suited for specific applications. Gearboxes allow machines to operate efficiently by increasing torque at low speeds or increasing speed at low torque, depending on the application.

Couplings: Couplings are mechanical devices that connect two rotating shafts to transmit power and accommodate misalignment between them. They can be classified into rigid and flexible types. Rigid couplings are used when shafts are perfectly aligned, providing a solid connection. Flexible couplings allow for slight misalignments and absorb shocks and vibrations, protecting the connected machinery from damage. Common types of flexible couplings include jaw, gear, disc, and elastomeric couplings. Together, gearboxes and couplings ensure smooth, efficient, and reliable power transmission in mechanical systems.