Linear guide self-aligning capability from the arc groove DF (45- ° 45) ° combination, at the time of installation, the deformation and the transfer of an elastic ball contact point, and even somewhat offset mounting surface, can also be line rail slider internal absorption, self-aligning capability to produce the effect of a smooth and highly accurate and stable movement. Interchangeable because of the strict control of manufacturing precision linear guide size can be maintained at a certain level, and the slider has to keep the ball designed to prevent loss, and therefore part of the series with precision interchangeability customers to follow need to order or slide rails, rails and sliders can be stored separately in order to reduce storage space. All have high rigidity in all directions using the four-column-circular grooves, with four rows of balls and other contact angle of 45 degrees, so that the two-point contact ball to achieve the desired structure can withstand the load from the up and down and left and right directions; when necessary, more preload may be applied to increase the rigidity. Principle 1 --- linear guide selection priority performance rather than price: to meet the design requirements should be the first consideration of the target user, and then find the right vendor for a relatively low price is the right path. Machinery parts industry in particular circumstances very little linear guide sales profits, in addition to high-end brands outside factors if you ignore the basic channels can be considered high prices and high quality. Priority 2 --- Select product type rather than brand: as a user, is proud to be loyal to a particular brand is stupid long linear guide, the appropriate forum at the appropriate time to use different brands of products is necessary. Example: A user EDM machine installed in Japan ** K aluminum linear guide rail, bad slider linear guide, warranty period needs to be ordered, but was told the manufacturers have the entire order, over 7000 blocks, 2.5 months to goods, and Taiwan brand **** N similar model as long as more than 2000 spot. I have nearly 10 years of experience in the industry that the quality of these two models less. But change can not, why? Because the original combination of high and slider mounting hole is not the same. (To avoid advertising suspects, part of the brand instead of a letter *) 3 --- priority standard model instead of a special model: each manufacturer's sample size will be listed in the same lot of product, but may in fact most are not production or delivery period is very long, so do not use unconventional non-essential specifications, in order to avoid causing distress, delivery, maintenance and other aspects. Aluminum linear guides, Korea and Taiwan transmission machinery (certified), even the state of 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.