1、FOR LINEAR SYSTEM: Linear bearing is used in conjunction with quenched linear drive shaft for linear motion system, with low friction resistance and high accuracy. 2、LOW LOAD: Since the bearing ball is in point contact with the shaft, the load is small, and the steel ball rotates with minimal frictional resistance. 3、STANDARD SIZE: Including 2pcs square flange linear bearing, inner diameter is 30mm, diameter is 45mm, thickness is 64mm, standard in size, easy to use. 4、BEARING STEEL: Using excellent bearing steel, which has high hardness, high contact fatigue strength, rust resistance and wear resistance, long service life. 5、WIDE APPLICATION: Used in electronic equipment, tensile testing machines, digital 3D coordinate measuring equipment and multiple axes machine tools, etc.