Widely used for digital 3D coordinate measuring equipment, precision machinery, and special industrial machinery Suitable for various electronic equipment, guide bars, drive shafts, and pillars Bearing pillow block offers reliable load capacity, compatible with standard precision racks, strong adaptability Smooth movement, low friction, high rigidity, and long service life Excellent wear resistance, corrosion resistant, high precision, and good structural strength Color: Silver Material: Aluminum alloy Specifications: Steel Linear Shaft Optical Axis: - Outer diameter: 8mm (0.31 inch) - Length: 200mm (7.87 inch) Linear Rail Support Guide Shaft Bearing: - Product Size: 42 x 32 x 11mm (1.65 x 1.26 x 0.43 inch) - Inside Diameter: 8mm (0.31 inch) – compatible with 8mm optical axis - Package Size: 45 x 35 x 30mm (1.77 x 1.38 x 1.18 inch) Linear Ball Bearing: - Inner Diameter: 8mm (0.315 inch) - Length: 34.5mm (1.36 inch) Package Contents: - 4 x Linear Motion Ball Bearing - 4 x Rail Support Guide - 2 x Linear Shaft Optical Axis Note: The package includes only the items listed above. Other accessories or equipment are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3cm.