Linear guide, has higher rated load, than the straight line bearing can bear a certain torque at the same time, can be achieved under the condition of the high load and high precision linear motion. According to linear guide on the mainland, Taiwan is generally called linear guide rail, linear slide rail.
The function of linear motion guide rail is used to support and guide the moving parts, according to the given direction do reciprocating linear motion. Depends on according to the nature of the friction, linear motion guide rail can be divided into sliding friction guide rail friction, rolling friction guide rail, elastic guideway, fluid friction guide rail type, etc. Linear bearing is mainly used in automated machinery, as Germany imported machine, bending machine, laser welding machine, etc., linear bearing and straight axis, of course, is for the use of form a complete set. As linear guide is mainly used in precision demand is higher, on the mechanical structure of the linear guide mobile medium without intermediate between components and fixed components, and rolling steel ball. For rolling steel ball adapted to the high speed movement, small friction coefficient, high sensitivity, meet the job requirements of the moving parts, such as machine tool rest, apron, etc. If the effect on the steel ball is too big, the power of the steel ball additive through load time is too long, which resulted in increased stent motion resistance.