Choose one --- linear guide rail width is determined. Width refers to the width of the rail track. Track width is one of the key factors that determine the size of its load 2 --- determine long track. This length is the total length of the rail, not the trip. Total length = effective stroke + slider spacing (two or more sliders) + slider slider length × number + safe journey ends, if the increase in the shield, the shield at both ends of the need to add compression length. 3 --- determine the type and number of sliders. The slider is used in two ways: flange type, square. The former height lower, but a little wide, mounting hole is threaded through holes, the latter a little higher linear guide, narrower, mounting hole is threaded blind holes. Both have short, standard and extended type of points (some brands, also known as the load, heavy-duty and heavy load), the main difference is the slider body (metal part) the length of the mounting hole hole course spacing may be different, most short type slider only two mounting holes. Slide number should be determined by calculating the user, this is only a recommendation: small enough to carry, more to be installed. Slide rails width and the type and number three elements constitute the load size. 4 --- determine the accuracy level. Manufacturers of products will be marked in any accuracy class, some manufacturers label more scientific, the general level of the first letter of the name, such as the general level marked N, Precision Standard P. Evolution of linear guides and linear slide rail linear evolution from the beginning of the linear bearing linear guide service, but not because of the linear ball bearing rolling groove, do the binding nature of the linear motion and therefore can not transmit torque and poor load capacity linear guides Agents, short life. So they evolved into the guide rod ball, but the ball can only be fixed at both ends of the guide rod cylinder, easily distorted by the radial load. So poor rigidity, so it evolved into a linear slide. In addition to the linear guide, when the contact is a way of rolling circle is on when the center, called the DF-face configuration, the rolling motion of such a flexible body, when the linear slide in the installation, even if some of the mounting surface of the bed table Xu segment poor, but because the ability to adjust the slider ball still reciprocating motion, and when the contact is a way of rolling circle with his back to the center when the brand linear guide, called DB-back configuration, this time according to the anti-roll rolling elements strength is often, when the linear guide by rolling moment still maintain good rigidity. Maintenance linear guides, Korea and Taiwan transmission machinery, linear guides provided by the Dongguan City, Transmission Machinery Co., Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) is an industry leader in Dongguan, Guangdong, machine tool accessories, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Korea and Taiwan transmission machinery leadership with the staff warmly welcome all inquiries negotiations, Korea and Taiwan to create a better future transmission machinery.