What is the difference between a ball screw and a linear guide?

Linear guides, also known as slide rails, linear guides, and linear slides, are used for linear reciprocating applications. They have a higher rated load than linear bearings, and can withstand a certain amount of torque, enabling high-precision straight lines under high load conditions. Sports. Linear bearings are mainly used in automation machinery, such as machine tools imported from Germany, paper bowl machines, laser welding machines, etc. Of course, linear bearings and linear shafts are used together. Linear guides are mainly used for comparison of precision requirements. High mechanical structure, slider - transforms motion from a curve to a straight line

Ball screws are ideal for converting rotary motion into linear motion or converting linear motion into rotary motion. The ball screw consists of a screw, a nut and a ball. Its function is to transform the rotary motion into linear motion, which is the further extension and development of the ball screw. The significance of this development is to change the bearing from rolling action to sliding action. Ball screws are widely used in a variety of industrial equipment and precision instruments due to their low frictional resistance. Ball screw is the most commonly used transmission component in machine tools and precision machinery. Its main function is to convert rotary motion into linear motion, or to convert torque into axial repetitive force, with high precision, reversibility and high. The characteristics of efficiency. The characteristics of the ball screw: 1. Compared with the sliding screw pair, the driving torque is 1/3. Because there are many balls between the screw shaft and the nut of the ball screw pair, the rolling motion can be obtained. Exercise efficiency. Compared with the past sliding screw pair, the driving torque is less than 1/3, that is, the power required to achieve the same motion result is 1/3 of the use of the rolling screw pair. It is very helpful in saving electricity. 2, high-precision guarantee that the ball screw pair is produced continuously in the world's highest level of mechanical equipment made in Japan, especially in the factory environment of grinding, assembly and inspection, the temperature and humidity are strictly controlled. Due to the perfect quality management system, the accuracy is fully guaranteed. 3. Micro-feeding possibility Since the ball screw pair uses the ball movement, the starting torque is extremely small, and there is no crawling phenomenon like sliding movement, which can ensure accurate micro-feeding. 4, no backlash, rigid high ball screw pair can be added to the pressure, due to the pressure can make the axial gap to a negative value, and then get higher rigidity (in the ball screw by adding pressure to the ball, in actual use In mechanical devices and the like, the rigidity of the wire mother portion can be enhanced due to the repulsive force of the balls. 5. High-speed feed may be achieved due to high movement efficiency and low heat generation, so that high-speed feed (motion) can be achieved. Mainly used in: various machine tools, equipment industry, automation industry, industry fixtures manufacturing.