Causes of failure of linear motion bearings

Linear motion bearings failure for many reasons, but commonly used is improper use, pollution, lubricant improper use, damage and installation errors in the process of loading and unloading or handling. To diagnose the cause of the problem is not difficult, because you can according to the linear motion bearing traces of determine the cause of the linear motion bearing failure. Best buy bearing, through the correct selection of linear motion bearings to completely avoid failure. Therefore, it is important to check the manufacturers sizing guidelines and selected characteristics of linear motion bearings. About 40% of spherical linear motion bearing failure is by dust, dirt, debris and caused corrosion. Pollution is often due to improper use and environment caused by improper use, can also lead to torque and noise problem. Can be caused by environment and pollution prevention of linear motion bearings fault, and you can take a simple visual inspection to determine the cause of the failure. As long as the correct use and installation, ablation of linear motion bearings can be easily avoided. Erosion characteristics is due to the impact load or incorrect installation and micro bearing ring rolling on the indentation. When the load exceeds the yield limit of material, usually erosion will happen. If the installation is not correct to load through the bearing ring, the ablation. The pits on a straight line movement bearing ring also can produce noise, vibration and additional torque. 1 when linear motion bearings not rotating, due to the linear motion ball between bearing ring caused by the vibration of the oval indentation. The corrosion damage known as low charge. This damage can occur in the transport equipment and no runtime is still in vibration of the equipment. In addition, low charge corrosion debris like grinding grain, further damage to the linear motion bearings. Corrosion features different from melting, low charge is usually due to fretting wear tiny red light in the lubricant. Eliminate the vibration source and maintain good micro bearing lubrication can prevent the corrosion of low load. Add the gasket on the device or isolation base can reduce environmental vibration. And, in terms of linear motion bearings increase a small pre-load will not only help the ball and linear motion bearing ring to keep close contact, but also helps to prevent the vibration under low load of equipment during the process of transportation. 2, linear motion bearings blocking reason is the insufficient internal clearance, improper lubrication and heavy load. Excessive friction and heat will make the linear motion bearing steel soften before get stuck. Overheating of linear motion bearings usually change colors, usually into dark blue or light yellow. Friction is also can make the cage stress, it will damage the racks and accelerate the failure of linear motion bearings. 3 material after premature fatigue failure is due to overloading caused by overload. If these conditions are inevitable, carefully calculated bearing life, in order to make the maintenance plan. Another solution is to change the material. If the standard linear motion bearings material cannot guarantee sufficient bearing life, you should use special materials. In addition, if the problem is caused by overload, should be used with strong capacity of linear motion bearings or other structures. 4 creep is not as common as premature fatigue. Linear motion bearings creep is caused by too large gap between axis and inner ring. Creep is very harmful, it not only damage the linear motion bearings, but also damage other components. A significant feature of peristalsis is axis and the color of the inner ring of the scratch, scratch or change. In order to prevent creeping, first check the linear motion bearing housing and shaft with the naked eye in the attachment. Creep is related to improper installation. If you don't right or lift linear motion bearing ring, the ball will move along a circular orbit. This problem is due to incorrect or linear motion bearings installation location tolerance of insufficient or inadequate verticality. If deviation more than 0. 25 ' Premature failure, linear motion bearings. Check the lubricant pollution than check incorrect assembly or creep is much more difficult. Pollution is characterized by linear motion bearings of premature wear. The solid impurities like lubricant abrasive particles. If the ball in the cage and poor lubrication between cage, will wear and weaken the cage. In this case, the lubrication is very important to complete processing form cage. Instead, strip or coronary cage can be more easily to reach the entire surface of the lubricant. Rust is a form of water pollution, its appearance is often show that improper selection of materials. If the test material for the work requirement, to prevent rust is the easiest way to linear motion bearings, packaging until opened the package for installation.