Machined shafts are of various types, each with its different load capacity, rotational speed, and uses. Common types of shafts and their uses include:
Hollow Shafts
Hollow shafts often bear a central hole or void, allowing fluid, wire, and other components to pass. They usually have low weight in contrast to solid shafts of similar size. Hollow shafts are applicable in racing vehicles and aircraft to reduce weight. In addition, they are also applicable to conveyor systems, pumps, and medical devices.
Threaded Shafts
These machined shafts have internal or external threads cut into them, which match the threads on a corresponding part like a nut. This form of connection is often found in applications requiring frequent attachment or detachment, like electrical or plumbing work. Threaded shafts are also used in threaded spindles, lead screws, and fastening mechanisms.
Keyed Shafts
A keyed shaft is a type of machined shaft with a keyway cut into it to secure components such as sprockets, pulleys, or gears. The machined keyways have the same width as a key. As such, the keyway accommodates the key, engaging the other component’s corresponding teeth to prevent it from rotating independently or slipping. Keyed shafts are ideal for maintaining a connection in high-torque applications like motors and pumps.
Splined Shafts
These splined machined shafts have longitudinal grooves or splines cut into them along their length that fit into matching splines machined into a corresponding component like a pulley or gear. This is a strong form of connection, allowing seamless power transmission since no relative movement occurs between the two parts. They are often utilized in applications requiring precise positioning or torque transmission, like automotive transmission or gear couplings.
Tapered Shafts
A tapered shaft has a gradual reduction in diameter along its length. Tapered shafts are often used in applications where components like automotive wheel hubs, pulleys, or gears must be securely mounted.