oil seal
oil seal
Guide rail sliding block
Guide rail sliding block

Metal linear bearing is a linear motion system produced at low cost, which is used in conjunction with a cylindrical shaft with an infinite stroke. It is widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, printing machinery and so on.


(1) Standard type, clearance adjustment type linear bearings, open type linear bearings, extended type linear bearings, general-purpose linear bearings
(2) Flanged linear bearings can be divided into: round flange type, method flange type, oval flange type, guided round flange type, guided method blue type, guided oval flange type, and extended round flange type.

According to specifications:

It is divided into two series, namely LM and LME series. Its code name LM series is used in Asia, Southeast Asian countries, Japan, Korea, China, etc. With the metric size as the standard, the outer diameter tolerance of the linear shaft is generally h7. LME series are mostly used in Europe, America, Germany, Italy and other regions.
The inch size is the standard, and there are also metric sizes. The outer diameter tolerance of the linear shaft is generally g6. The structural characteristics of the two series are roughly the same except for the different sizes and aperture tolerances.

According to the shape:

1: Straight cylinder type (the shape is like a cylinder, generally installed with a circlip, used for occasions with small installation dimensions)
2: Flange type (there is a mounting flange at the end or in the middle, which can be installed with screws. The flanges are generally divided into three types: round, square and trimmed)
3: Open type (shape like a straight cylinder, with axial slits on the outside, used in occasions where gap adjustment is required, divided into two types: large opening and small opening)

According to performance points:

1Ordinary type (applications with general performance requirements)
2 Super type (for long life and high load performance requirements)
Linear bearings are more and more widely used in precision equipment such as electronic equipment, food machinery, packaging machinery, medical machinery, printing machinery, textile machinery, machinery, instruments, robots, tool machinery, CNC machine tools, automobiles and digital three-dimensional coordinate measuring equipment Or in the special machinery industry.