Width linear guide 30, a combination of height 42, 72 × 52 pitch linear guide for linear reciprocating motion occasions, have a higher than linear bearings rated load, and can assume certain torque, high accuracy can be achieved in the case of high load linear motion. Linear guide is a guide roll, which consists of steel balls between the slider and the guide rail for rolling infinite loop, so that the load platform can easily with high precision linear motion along the guide rail, the friction coefficient can be reduced to the conventional slide-guiding 1/50, so that it can easily reach μm-level positioning accuracy. End unit designed to slide between the rails, making the linear guide can withstand vertical and horizontal loads in all directions, the return of the patent system and streamline the structure of the linear guide rail design allows a more smooth and low-noise movement. When the load or pre-load effect for two-point contact ball bearing. Since the sliding trace is very small, and therefore, the balls can run smoothly. Since the radius of curvature of the guide rail is 52-53%, and therefore can withstand high static load. Guide structure for ideal two-point contact, provide sufficient pre-load, therefore, has a high rigidity. Special seal designed to prevent dust from entering, but also to prevent oil spills, extended service life. Linear guide: 1, 2 low price, prompt delivery 3, 4 precise location accuracy, reduce production costs and electricity 5, 6 long time to maintain high accuracy, easy to install 7, improve mechanical reliability. Linear Guides are various machine tools, CNC machining centers, an important feature sophisticated electronic machinery indispensable, linear guide series saves power consumption and high speed operation, improve production efficiency of machinery.