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Linear Guide: The Difference Between Linear Guide And Linear Bearing

Oct 15, 2021



Linear bearing is a linear motion system produced at low cost, used in conjunction with a cylindrical shaft with an infinite stroke. Since the bearing ball is in point contact with the shaft, the use load is small. The steel ball rotates with a small frictional resistance, so that high-precision and smooth motion can be obtained. Linear bearings are widely used in electronic equipment, tensile testing machines and digital three-dimensional coordinate measuring equipment and other fine equipment, as well as the sliding of industrial machinery such as multi-axis machine tools, punches, tool grinders, automatic gas cutting machines, printers, card sorting machines, food packaging machines, etc. part.

Linear bearing is a linear motion system produced at low cost, used in conjunction with a cylindrical shaft with an infinite stroke. Since the bearing ball is in point contact with the shaft, the use load is small. The steel ball rotates with a small frictional resistance, so that high-precision and smooth motion can be obtained. Linear bearings are widely used in electronic equipment, tensile testing machines and digital three-dimensional coordinate measuring equipment and other fine equipment, as well as the sliding of industrial machinery such as multi-axis machine tools, punches, tool grinders, automatic gas cutting machines, printers, card sorting machines, food packaging machines, etc. part.


Linear guides and linear bearings are basically two product accessories from the top. Linear guides are an accessory that transmits motion. The reciprocating linear motion from a specified point to the next point is a guide rail. The appearance of linear bearings is obviously different from the outside of linear guides. Linear bearings are barrel-shaped and run on linear optical axes (including various flange linear bearing blocks), linear guide optical axes, and linear circular guides (including linear guide bearing block sliding units). And flange type guide shaft support).


Linear guides and linear guide bearings are basically two product accessories above. Linear guides are an accessory that transmits motion. The track reciprocating linear motion from a specified point to the next point is a guide rail. The appearance of the linear guide bearing is obviously different from the outside of the linear guide: the guide shaft of the linear guide shaft bearing is in the shape of a round barrel; while the axis of the linear guide is a square structure.


The linear optical axis is a linear motion system, which is used in conjunction with linear bearings and cylindrical shafts. Since the bearing ball is in point contact with the bearing jacket, the steel ball rolls with small frictional resistance, so the linear optical axis has low friction, is relatively stable, does not change with the bearing speed, and can achieve smooth linear motion with high sensitivity and high accuracy. The consumption of the linear optical axis also has its limitations. The main reason is that the linear bearing has poor impact load capacity and poor carrying capacity; secondly, the linear bearing has greater vibration and noise during high-speed motion.


Linear guide bearings and linear guides have similar functions, both supporting and guiding. The main difference lies in the installation position: linear guide bearings are generally fixed at both ends, and the suspended connecting parts in the middle cover all or most of the radial direction of the optical axis; linear guides are generally One side is all close to the equipment installation base and fixed with bolts.

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