Linear bearings are linear motion systems for linear travel with cylindrical shafts. As the bearing ball and the bearing jacket point contact, the ball with the smallest friction resistance rolling, so the linear bearing with a small friction, and relatively stable, does not change with the bearing speed, access to copper alloy bearing with high sensitivity, high precision linear motion. Linear bearing consumption also has its limitations, the most important is the bearing impact load capacity is poor, and the carrying capacity is also poor, followed by linear bearings in the high-speed self-lubricating flanging sleeve when the vibration and noise. Linear bearings are easy to optimize the selection of automation. Linear bearings should be widely used reciprocating bearings for precision machine tools, textile machinery, food packaging machinery, printing machinery and other industrial machinery sliding parts.
As the bearing ball and the bearing point contact, so the use of small load. The ball is rotated with minimal frictional resistance, resulting in a high-precision smooth movement.
Plastic linear bearing is a self-lubricating characteristics of the linear motion system, and metal linear bearings is the biggest difference between the metal linear bearing is rolling friction, bearing and cylindrical shaft is the point of contact between, so this is suitable for low-load high-speed movement; Plastic linear bearings are sliding friction, bearing and cylindrical shaft is between the surface contact, so this is suitable for high-load low-speed movement.
Bearing (Bearing) is a contemporary mechanical equipment, an important component. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and to ensure its rotation accuracy.
According to the different friction properties of the moving components, bearings can be divided into two categories of rolling bearings and plain bearings. Rolling bearings have been standardized, serialized, but compared with the sliding bearing its radial size, vibration and noise, the price is higher.
Rolling bearings generally by the outer ring, inner ring, rolling body and cage composed of four parts, strictly speaking by the outer ring, inner ring, rolling body, cage, seal, lubricating six pieces. Mainly with outer ring, inner ring, rolling body can be determined for the rolling bearing. According to the shape of the rolling body, rolling bearings are divided into ball bearings and roller bearings two categories.