What is the difference between linear bearings and bearings

Linear bearing is a kind of linear motion system, used for linear travel with cylindrical shaft. Due to the bearing ball and bearing jacket point contact, steel ball rolling with minimum friction resistance, so linear bearings have small friction, and more stable, not with the bearing speed and change, can get high sensitivity, high precision smooth linear motion. Linear bearing consumption also has its limitations, the most important is the bearing impact load capacity is poor, and bearing capacity is also poor, followed by linear bearing in high-speed movement vibration and noise is larger. Linear bearing fast easy superior automation selection have included. Linear bearings are widely used in precision machine tools, textile machinery, food packaging machinery, printing machinery and other industrial machinery sliding parts. [1]

Because of the bearing ball and bearing point contact, so the use of small load. The steel balls rotate with very little frictional resistance, thus enabling smooth movement with high precision.

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

Bearing (Bearing) is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the coefficient of friction in the process of its movement, and to ensure its rotary accuracy.

According to the different nature of the friction of the moving elements, bearings can be divided into two categories: rolling bearings and plain bearings. Among them, the rolling bearing has been standardized, series, but compared with the sliding bearing its radial size, vibration and noise is larger, the price is also higher.

Rolling bearings generally by the outer ring, inner ring, rolling body and keep frame four parts, strictly speaking by the outer ring, inner ring, rolling body, keep frame, sealing, lubricating oil six parts. Mainly with the outer ring, inner ring, rolling body can be defined as rolling bearings. According to the shape of the rolling body, rolling bearings are divided into two categories: ball bearings and roller bearings.