1. Ordinary linear optical axis (sf): Since the ordinary linear optical axis is in point-to-face contact with the linear bearing, the surface hardness of the ordinary linear optical axis is very high. In addition, the material and heat treatment method are very important. Material: suj2 (equivalent) national standard gcr15, hardness: hrc602, hardened layer depth: 0.8-3mm, surface roughness: ra0.10m-ra0.35m, straightness: 70um/1000mm or less, shaft diameter tolerance: g6.

2. Chrome-plated linear optical axis (sfc): chrome-plated linear optical axis is plated with a layer of hard chromium on the basis of ordinary linear optical axis, also called bearing rod, which can be used in rust-prone environment or bad environment It is widely used in industrial robots and the moving parts of automatic sliding system devices. Optical axis: suj2 (equivalent) national standard gcr15, hardness: hrc602, hardened layer depth: 0.8-3mm, surface roughness: ra0.10m-ra0.35m.

3. Chrome-plated linear flexible shaft (rsfc): The chrome-plated linear flexible shaft can be directly used for precision piston rods and some self-lubricating bearings due to its thick chrome layer. Material: 45# or 40cr or 2cr13, hardness: hb220-260, hardened layer depth: 0.8-3mm, straightness: 0.15mm/1000mm or less, chrome plating thickness: 0.02-0.05mm.

4. Stainless steel linear shaft: The stainless steel linear shaft has high corrosion resistance, high strength and wear resistance. Therefore, it can be used in occasions that are prone to oxidation, such as water, chemicals, steam, sea water, etc. Material: sus404c, sus304, hardness: hrc602, hardened layer depth: 0.8-3mm, surface roughness: ra0.10m-ra0.35m.

5. Chrome-plated hollow shaft: Due to the characteristics of its hollow structure, the chrome-plated hollow shaft greatly reduces the weight and simplifies the structure. Its interior is suitable for penetration of measuring wires, compressed air, or for robots Arm.