What are the main materials of Barbieri's synchronous wheels? What other materials can the sync wheel be made of? What accuracy can be achieved with concentricity?

1. What are the main materials of Barbieri's synchronous wheels? The materials of Barbieri synchronous wheels are aluminum alloy and 45#. 2. What other materials can be made of the synchronous wheel? Copper can also be made, but this is not a commonly used material. If it is made, the business terms will be quite different. 3. What accuracy can you achieve with the concentricity of the synchronization wheel? The accuracy can be 0.05mm, the normal accuracy is 0.1mm