Linear bearing is a linear motion system, which is used for linear stroke and cylindrical shaft. As the bearing ball contacts the bearing outer sleeve point, the steel ball rolls with the minimum friction resistance, so the linear bearing has small friction, is relatively stable, does not change with the bearing speed, and can obtain a stable linear motion with high sensitivity and accuracy. The consumption of linear bearing also has its limitations. The main reason is that the bearing has poor impact load capacity and load capacity. Secondly, the linear bearing has large vibration and noise when moving at high speed. Automatic selection of linear bearing is included. Linear bearings are widely used in the sliding parts of precision machine tools, textile machinery, food packaging machinery, printing machinery and other industrial machinery.

By shape:
1: Straight cylinder type (the shape is like a cylinder, which is generally installed with a snap ring, and is used in the case of small installation size)
2: Flange type (there is a mounting flange at the end or in the middle, which can be installed with screws. Generally, there are three types of flanges: round, square and trimming)
3: The open shape is like a straight cylinder, with an axial slit on the surface. It is used in situations where clearance adjustment is required, and can be divided into two types: large opening and small opening)

By performance:
1: Common type (use for general performance requirements)
2: Super type (where long service life and heavy load performance are required)