1、Small frictional resistance of rolling contact bearing, small power consumption, high mechanical efficiency, easy to start.
2, size standardization, interchangeability, easy installation and disassembly, easy maintenance.
3, compact structure, light weight, axial size more reduced.
4, high precision, high load, low wear, long service life.
5、Some bearings have the performance of automatic centering.
6, suitable for mass production, stable and reliable quality, high production efficiency.
7, transmission friction torque is much lower than fluid dynamic pressure bearings, so the friction temperature rise and power consumption is lower.
8、Starting frictional torque is only slightly higher than the rotating frictional torque.
9、The sensitivity of bearing deformation to load changes is less than that of fluid dynamic pressure bearings.
10、Only a small amount of lubricant is needed for normal operation, and the lubricant can be provided for a long time during operation.
11、The axial dimension is smaller than the traditional fluid dynamic pressure bearing.
12, can simultaneously withstand radial and thrust combined load.
13, in a large range of load – speed, the unique design can obtain excellent performance.
14, bearing performance on the load, speed and operating speed fluctuations are relatively insensitive.
Deep groove ball bearings, needle roller bearings, angular contact bearings, spherical ball bearings, spherical roller bearings, thrust ball bearings, thrust spherical roller bearings, cylindrical roller bearings, tapered roller bearings, spherical ball bearings with seats, etc.
Roller contact bearings are divided into deep groove ball bearings have simple structure, easy to use, and are the largest production volume and the most widely used type of bearings. It is mainly used to bear radial load, but also can bear a certain axial load. When the radial clearance of the bearing is increased, it has the function of angular contact bearing and can bear larger axial load. Used in automobiles, tractors, machine tools, motors, pumps, agricultural machinery, textile machinery, etc.
Needle roller bearings are equipped with thin and long rollers (roller length 3 to 10 times the diameter, the diameter is generally not more than 5mm), so the radial structure is compact, its inner diameter size and load capacity with other types of bearings, the outer diameter of the smallest, especially suitable for radial installation size is restricted support structure.
Rolling contact bearing angular contact ball bearing limit speed is high, can simultaneously withstand the load and axial load, can also withstand pure axial load, its axial load capacity by the contact angle decision, and with the contact angle increases and increases. Mostly used in: oil pumps, air compressors, various types of transmissions, fuel injection pumps, printing machinery.
Spherical ball bearings have two rows of steel balls, the inner ring has two raceways, the outer ring raceway for the inner spherical shape, with the performance of automatic centering. It can automatically compensate for the coaxiality error caused by the shaft winding and shell deformation, and is suitable for the parts in which the support seat hole cannot guarantee strict coaxiality. This kind of bearing mainly bear radial load, in bear radial load at the same time, also can bear a small amount of axial load, usually not used to bear pure axial load, such as bear pure axial load, only a column of steel ball force. Mainly used in combine harvesters and other agricultural machinery, blowers, paper machines, textile machinery, woodworking machinery, bridge cranes go wheel and drive shaft.
Rolling contact bearing spherical roller bearings have two rows of rollers, mainly used to bear radial load, but also can withstand the axial load in either direction. This kind of bearing radial load capacity is high, especially suitable for heavy load or vibration load work, but can not bear pure axial load; spherical performance is good, can compensate for the same bearing error. Main uses: paper making machinery, speed reducing device, railroad vehicle axle, rolling mill gear box seat, crusher, all kinds of industrial speed reducer and so on.
Thrust ball bearing is a kind of separation type bearing. Thrust ball bearing can only withstand axial load, one-way thrust ball bearing can only withstand a direction of the axial load, two-way thrust ball bearing can withstand two directions of the axial load. Thrust ball bearing can not limit the radial displacement of the shaft, the limit speed is very low. One-way thrust ball bearing can limit the axial displacement of the shaft and shell in one direction, two-way bearing can limit the axial displacement in two directions. Mainly used in automobile steering mechanism, machine tool spindle.
Thrust roller bearings are used to bear axial load mainly in the shaft. Combined load in the direction of the warp, but the warp load shall not exceed 55% of the axial load. Compared with other rolling contact bearing thrust roller bearings, such bearings have a lower friction factor, higher speed, and have the ability to adjust the center.
Cylindrical roller bearings Cylindrical roller bearings are usually guided by two retaining edges of a bearing collar, retainer. Rollers and guide collar to form a combination, can be separated from another bearing collar, belong to the separable bearing. This kind of bearing installation, disassembly is more convenient.
Tapered roller bearings are mainly used to bear radial load mainly radial and axial combined load, and rolling contact bearing large taper angle tapered roller bearings can be used to bear axial load mainly diameter, axial combined load.