The precision grade of LMGN/LMGW series miniature linear guide rail is divided into three levels: ordinary, high and precision. Customers can choose suitable precision according to the design precision requirements. Linear guide rail, also known as rail, slide rail, linear guide rail, linear slide rail, can be divided into linear guide roller, cylindrical linear guide, ball linear guide three. Linear guide for high-precision or high-speed linear reciprocating motion occasions, and can bear a certain torque, can achieve high-precision linear motion under high load. In the mainland said linear guide, Taiwan generally called linear guide, linear slide rail.