4.1.2 Guide Rail Materials
The guide rails for engineered plastic chains are usually made of 304 stainless steel with a good finish, MC nylon, or ultra-high molecular-weight polyethylene (UHMW). For steel chains, guide rails are made of plastic.
For heat-resistant and high-speed applications, make sure you consider the following points:
- When the chain operates within normal temperatures at high speeds, choose a guide rail that is made of carbon steel or stainless steel with polished, hard chrome-plating.
- When the chain operates in high temperatures, consider a polished stainless steel guide rail. Remember to allow for heat expansion, and fix only one end of the guide rail.
|Material||Maximum Chain Speed (m/min)||Maximum Ambient Temp. (c)||Coefficient of Friction||Maximum Allowable Load (kN)|
|Heat-Resistant||Super Engineered Plastic||200||250||0.20||0.98|
|Anti-Chemical||Super Engineered Plastic||40||80||0.30||0.50|
|Electro- conductive||Special Polyacetal||50||80||0.25||0.70|
|Plastic Pin||Special Polyacetal||50||80||0.17||0.88|