Shende Sales Corporation

Parallel key

Parallel keys are the most widely used. They have a square or rectangular cross-section. Square keys are used for smaller shafts and rectangular faced keys are used for shaft diameters over 6.5 in (170 mm) or when the wall thickness of the mating hub is an issue. Set screws often accompany parallel keys to lock the mating parts into place.^[3] The keyway is a longitudinal slot in both the shaft and mating part.

Shaft keys are mechanical components used to connect rotating machine parts like gears and pulleys to a shaft, transferring torque and preventing relative motion. The most common types include sunk keys (like parallel, square, and rectangular), saddle keys, and woodruff keys, each suited for different applications and loads. Keys are vital for power transmission in many industries, from automotive and textile machinery to electric motors and pumps