Basic Introduction To Linear Bearings

A linear bearing is a linear motion system used for linear travel in conjunction with a cylindrical shaft. Due to the point contact between the bearing ball and the bearing shell, the steel ball rolls with the smallest frictional resistance, so the linear bearing has low friction, is relatively stable, does not change with the bearing speed, and can obtain smooth linear motion with high sensitivity and high precision. The consumption of linear bearings also has its limitations. The most important one is that the impact load capacity of the bearing is poor, and the bearing capacity is also poor. Secondly, the linear bearing has large vibration and noise during high-speed motion. Automatic selection of linear bearings is included. Linear bearings are widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, printing machinery, etc.

Since the bearing ball is in point contact with the bearing, the operating load is small. The steel ball rotates with minimal frictional resistance, resulting in a smooth motion with high precision.

The plastic linear bearing is a linear motion system with self-lubricating characteristics. The biggest difference between it and the metal linear bearing is that the metal linear bearing is rolling friction, and the point contact between the bearing and the cylindrical shaft, so it is suitable for low-load high-speed motion; Plastic linear bearings are sliding friction, and there is surface contact between the bearing and the cylindrical shaft, so this is suitable for high-load, low-speed motion.