Screw support bearings gap detection and repair, such as a dial indicator to measure the screw in the screw does not swing forward and backward pointers businesses screw gantry rotation, indicating that the screw does not traverse. Such as dial pointer swing, indicating that the screw has a rocky ledge phenomenon. The difference between the maximum and minimum measurement dial indicator value is the axial screw ran away. At this point, we have to check whether the support bearing caps lock back, whether support bearings are worn failure, pre-load bearing washers are appropriate. If the bearing is no problem, just re-do the pre-load washer with it. If the bearing is damaged screw, you need to replace the lost dispenser bearing screw businesses, again with pre-load washers do, then back cap back tight. Screw axial movement lies in the accuracy of the size of the support bearing pre-load washers. Screw mounting accuracy of the ideal state is no positive and negative space, support bearings also have 0.02mm about interference. 3. Bearing improper selection generally match the bevel bearing ball screw must, especially in high-pressure bearing angle design for better choice; when the ball screw axial load, the general will produce a certain amount of deep groove ball bearing axial backlash, deep groove ball bearings and therefore does not apply here. 4. bearing improper installation (1) If the bearing is mounted on the ball screw and the two do not really fit the screw where the sale of CNC lathes, in the case of axial load will result in the generation of backlash, this situation may be due to shoulder screw is too long or too short caused. Verticality (2) bearing lock nut bearing surface and the axis of the V-shaped teeth poor, or parallel to the surface of the locking nut poor will lead to tilt bearing two corresponding direction; therefore shoulder screw locking screw V-shaped teeth and bearing cap bearing surface to be processed simultaneously, in order to ensure vertical, if the grinding process better way. (3) with two lock nuts with spring washers to secure the bearing to prevent loosening operation. Dragon screw priced Korean and Taiwan _ _ screw drive machinery 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.