Common materials for linear shafts include aluminum alloy, stainless steel, carbon steel, and plastic. Each of these materials has its own unique characteristics and applicable scenarios.
Aluminum alloy
Aluminum alloy shafts, such as EN AW 6061/6060, are often used in applications that require corrosion resistance and low cost because they are light, non-magnetic, and easy to process. They perform well in salt spray or environments that require anti-washing. However, aluminum alloys should be used with caution in high temperature environments (over 180°C).
Stainless steel
Stainless steel shafts have high corrosion resistance, high strength, and wear resistance, and are suitable for applications that are prone to oxidation, such as water, chemicals, steam, and seawater. Stainless steel shafts perform well in high temperature and corrosive environments, but their cost is high.
Carbon steel
Chrome-plated carbon steel hard shafts are a common choice with good hardness and wear resistance, suitable for applications that require high strength and long life. Carbon steel shafts perform well in ordinary environments and medium loads, but be aware of their weight and cost.
Plastic
Plastic linear bearings are suitable for high-load, medium- and low-speed motion. Due to their self-lubricating properties and surface contact design, they are suitable for specific working conditions and load requirements. Plastic shafts perform well in light loads and low-speed motion, but their wear resistance and strength are low.
