Roller linear guide (dual-axis rail is one of them) is a linear modules linear slider wheel drive, wheel number usually 3-5 linear modules slide, roll a few more heavier the load: Ball Linear Guides slide the ball from the drive, and a larger number of small ball. Features Comparison: Linear roller ball linear guide rails relatively simple to maintain linear modules Which is good, such as convenient and simple slider with removable roller linear guide rail, easy to change with a single slider. Meanwhile eccentric nut capable of adjusting the gap between wheel and rail, so that the gap is zero. The slider and the ball linear guide rail is not open, because open will cause the ball to drop on the slider. Linear guide rails into square rails and round types. Circular rail is the earliest products, but less accuracy compared to square rails. However, the circular rail is ideal for vertical movement of heavy loads of occasions. Which specific use of linear guides should be decided according to the actual needs of the application guide. Square rail design inherent in the various grinding requirements lead to the initial cost is several times round guide rail, but with the performance of the linear guide rail manufacturing technology is superior to the circular rail. In general, square rails having higher load capacity, rigidity and precision and longer life. Which is good linear modules linear modules _ _ Hangzhou Cheng Feng bearing quality provided by Cheng Feng Bearing Co., Ltd. Lishui City. Lishui Cheng Feng Bearing Co. (susan1125.b2b.hc360.com/) strong, credible, Zhejiang Jinhua sliding bearing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Feng Cheng bearing into the brilliant and you work for a better future!