Linear motion bearing is a kind of supporting element which replaces sliding friction with rolling friction. It is usually applied to mechanical parts with low friction, high transmission accuracy and linear motion.
1. Strong applicability
Because rolling elements are added between parts that move relatively to form a motion pair, rolling friction is the main friction between moving parts, so the friction coefficient is small. Therefore, it has the characteristics of convenient starting, sensitive action, long service life and less energy consumption. It can be used for high-speed linear reciprocating motion, and it is not easy to crawl at low speed. It is especially suitable for components that frequently start or reverse drive.
2. Reduce vibration
The working clearance between some linear motion bearings relative to moving parts can be adjusted. The preload between the moving part and the stationary part can be realized, thus improving the working rigidity of the bearing and eliminating the impact and vibration that may occur during the movement.
3. Compact structure
It is convenient for standardization and serialization, and can greatly simplify the design, manufacture and maintenance of guide rail pairs. The structure of linear motion bearing is compact, which is beneficial to the miniaturization of machinery.
4. Easy lubrication
Lubrication is simple. Generally, grease can be injected into the moving surface regularly. Therefore, the lubricating device is simple to operate.
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