Strongly resisted the development of low-quality linear guide CNC bearing industry, as represented by a straight line guide bearing system has been rapid development, and have been used widely, due to the limited domestic manufacturers, some manufacturers cut corners to take the opportunity to reduce their quality of rail principle, to reduce costs, which is commonly known as low-quality products. This product is a certain degree of harm, and if this product will not only affect production and may even endanger the lives and safety of the operator. On the domestic market, domestic or tune today there exist a number of counterfeit and substandard products , and these products have been the appearance of the replacement roller linear guides, replaced by some well-known brand linear guide, posing as a means not only that today we can say that level is not poor, the way is also very numerous, a lot of fake products also have some quality nearly qualified, linear guides, but accuracy was not up to the national standard. At present, the linear guide industry confusion, which is leading to low-quality products are loopholes reasons, but also because of posing bearing in the initial task and will not appear much of a problem, and low prices, so there is a large mall filled bearing space. The past two years the rapid development and product quality improvement driven by domestic enterprises bearing fake businesses to invest in the material, technical, false means of progress to make a good impression posing bearings. But the poor quality linear guide products always can not escape the word poor quality, long-term use of this product will be a little bit of a disadvantage to show up, and some freeloaders linear guides users have to be careful to observe, not because of a little interest, try to choose low-quality products, which can only be condoned for fake encourage more of this negative trend, I hope the relevant departments to seriously deal with poor-quality linear rails. Linear guide structure classification (1) open linear guides must use the weight of moving parts or external loads, in order to ensure at a certain spatial position and force state, Face motion guide and support rail to maintain reliable contact, Kunshan straight rail, thus ensuring the traverse motion guide. Open linear guide ships less affected by temperature changes. (2) closed by means of a linear guide linear guide itself enclosed structure, to ensure that changes in the spatial position and force state, Face motion guide and support rails can maintain reliable contact, in order to ensure that the provisions motion guide movement. Closed linear guide is generally less affected by temperature cylindrical linear guide _ _ Korea and Taiwan linear guide transmission machinery (certified merchants) provided by the Dongguan City, Transmission Machinery Co., Ltd. of Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) (www.hantai168.com) is specialized in "chrome rods, bearing steel, hollow axis, linear bearings HIWIN, PMI, TBI" of enterprises, companies adhering to the " honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr Mei.