Widely used for digital 3D coordinate measuring equipment such as precision equipment or special machinery industry<br> Suitable for kinds of electronic equipment/guide bar, drive shaft, and pillar<br> Bearing Pillow Block have a certain bearing capacity, can hold in ordinary precision rack, strong adaptability.<br> Smooth moving, low friction, high rigidity and long working life.<br> They are good abrasion resistance, not easy to rust, high precision and good strength.<br> Color: Silver<br> Material: aluminum alloy<br> Specifications of Steel Linear Shaft Optical Axis :<br> Outer diameter: 8mm or 0.31inch<br> Length: 200mm or 7.87inch<br> Specification of Linear Rail Support Guide Shaft Bearing :<br> Product Size:42 x 32 x 11mm/1.65 x 1.26 x 0.43 inch<br> Inside Diameter:8mm/0.31 inch (Applicable to the optical axis diameter 8mm)<br> Pacakge Size:45 x 35 x 30mm/1.77 x 1.38 x 1.18 inch<br> Specification of Linear Ball Bearing:<br> Inner Diameter: 8mm/0.315 inch<br> Length: 34.5mm/1.36 inch<br> Package Contents:<br> 4 * Linear Motion Ball Bearing<br> 4 * Rail Support Guide<br> 2 * Linear Shaft Optical Axis<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.