1  .Heavy Rail is made of qualified high carbon steel with quenching, grinding, surface treatment etc. processing technology. Its character is high-hardness, excellent wear resistance, high precision etc.

2  .Roller is heavy load, double race high precision bearings. These rollers ensure linear  guide move stable even in high speed. This linear guide can be used long life in dirty  conditions because of V-type structure. Also it is very easy to maintain.

3  .All of rollers' bolt use centric structure, this ensure bolt will loose during moving.