The commonly used materials for motor shafts include carbon steel, stainless steel, alloy steel, and some high-strength engineering plastics. Among them, carbon steel and alloy steel are widely used in the manufacturing of motor shafts due to their high strength and wear resistance, especially in situations that require high loads and speeds. Stainless steel is often used in environments that require high corrosion resistance. In addition, some high-performance engineering plastics are also used to manufacture shafts for small motors, which have the characteristics of light weight, low cost, and easy processing.
The specific material to be used needs to be comprehensively considered based on various factors such as the motor's usage scenario, performance requirements, and cost budget.