Features For Linear System: Enables smooth linear motion when used with quenched linear drive shaft, offering low friction resistance and high accuracy for CNC equipment. Low Load: Minimizes load impact with point bearing balls, ensuring minimal frictional resistance and smooth rotation for linear motion. Standard Size: Includes 2pcs square flange linear bearing with 30mm inner diameter, 45mm diameter, and 64mm thickness, providing easy and compatible use for various applications. Bearing Steel: Crafted from high-quality bearing steel for exceptional hardness, fatigue strength, rust resistance, and wear resistance, ensuring a long service life for linear motion ball bearing. Wide Application: Versatile usage in electronic equipment, tensile testing machines, digital 3D coordinate measuring equipment, and multiple axes machine tools, making it ideal for various industrial and mechanical applications. Features: 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 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 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. Specification: Item Type: Linear Motion Bearing Model: LMK30UU Material: Bearing Steel Inner Diameter: Approx. 30mm / 1.2in Diameter: Approx. 45mm / 1.8in Thickness: Approx. 64mm / 2.5in Package List: 2 x Linear Motion Bearing Package List 2 x Linear Motion Bearing