What is the Shaft?
Shaft is a fundamental element of a machine. It serves as a support in rotating parts like gears and pulleys and itself is supported by bearings resting in the rigid machine housing. The gears and pulley which is placed on shaft help in transmitting the motion. Many other rotating elements are mounted on the shaft by the help of key. They are subjected to bending moment and torque due to the reactions on the members which is supported by the shaft and torque due to the power transmission. Shafts are commonly designed as stepped cylindrical bars, which is said that they have various diameters along their length, although constant diameter shafts would be easy to produce. The stepped shafts correspond to the magnitude of stress which varies along the length.
How to choose material?
The material used for ordinary shafts is mild steel. When high strength is required, alloy steel such as nickel, nickel-chromium, or chromium-vanadium steel is used. Shafts are generally formed by hot rolling and finished to size by cold drawing or turning and grinding.
TThe materials used for regular shafts are carbon steel of grade 40, 45, 50, and Stainless steel P17-4 and etc. The cnc turning motorcycle shafts we produced are 4140 wwith black zinc coating for corrosion resistance.
What's the application of shaft?
Automotive industry: In automobiles, shafts are used in engines, transmissions, and drivetrains. For example, the driveshaft transmits power from the engine to the wheels, while the camshaft controls the opening and closing of the engine's valves.
Aerospace industry: In aircraft, shafts are used in engine components such as turbines and compressors, as well as in flight control systems such as ailerons and elevators.
Industrial machinery: In industrial machinery, shafts are used in a wide range of applications, such as pumps, compressors, and conveyors.
Power generation: In power generation systems such as wind turbines and hydroelectric power generators, shafts are used to transmit mechanical power from the rotor to the generator.
Medical devices: In medical devices such as surgical instruments and implants, shafts are used to transmit motion and force between different components.
How to produce Shaft?
Overall, shafts are critical components in many mechanical systems and are essential for transmitting power and motion between different components. Their precise design and manufacturing are critical to ensuring that they operate reliably and efficiently. CNC Turning is one of the primary manufacturing techniques used for producing shafts due to its ability to create complex geometries with tight tolerances. The precision and solid steel shafts can be machined by Swiss-type machine. Swiss-type machine is a highly automated lathe, which can produce round and long parts, like shaft and pin, in one procedure. There are two spindles on a swiss-type machine and while one is cutting the material, the other one is in preparation, and as soon as the material ready, the secondary spindle will rotate and process the material. It's said that one end inputting the material and the other end outputting the finished product. For achieving concentricity and roundness, the rotating tools should be facing each other in centerline. It’s highly a aautomated and accurate. Transmission shafts and motors are usually made by this process. Learn more about our CNC lathe production capability.