It's enough to read this article for the classific

2022-08-14
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Easy to get bearing classification? Reading this article is enough

bearings are components that fix and reduce the load friction coefficient in the process of mechanical transmission. It can also be said that when other parts move relative to each other on the shaft, it is used to reduce the friction coefficient in the process of power transmission and keep the central position of the shaft fixed. Bearing is an important component in modern mechanical equipment. Its main function is to support the mechanical rotating body to reduce the mechanical load friction coefficient of the equipment in the transmission process. According to the different friction properties of moving elements, bearings can be divided into rolling bearings and sliding bearings

easily get bearing classification? Reading this article is enough

I. angular contact ball bearing

there is a contact angle between the ferrule and the ball. The standard contact angles are 15 °, 30 ° and 40 °. The larger the contact angle is, the greater the axial load capacity is. The smaller the contact angle is, the more conducive it is to high-speed rotation. A single row bearing can bear radial load and unidirectional axial load. The two single row angular contact ball bearings, which are structurally combined on the back, share the inner ring and outer ring, and can withstand radial load and bidirectional axial load

angular contact ball bearings

main uses:

single row: machine tool spindle, high-frequency motor, gas turbine, centrifugal separator, small car front wheel, differential pinion shaft

double row: oil pump, roots blower, air compressor, various transmissions, fuel injection pump, printing machinery

II. Self aligning ball bearing

double row steel balls. The outer race raceway is of inner spherical surface type, so it can automatically adjust the misalignment of the axis caused by the deflection or misalignment of the shaft or housing. The tapered hole bearing can be conveniently installed on the shaft by using fasteners, mainly bearing radial load

self aligning ball bearing

main uses: woodworking machinery, textile machinery transmission shaft, vertical self-aligning bearing with seat

III. self aligning roller bearing

this kind of bearing is equipped with spherical rollers between the outer ring of the spherical raceway and the inner ring of the double raceway. According to the different internal structures, it is divided into four types: R, Rh, RHA and Sr. because the arc center of the outer ring raceway is consistent with the bearing center, it has self-aligning performance, so it can automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing, and can bear radial load and bidirectional axial load

self aligning roller bearings

main uses: paper machinery, reducer, railway vehicle axle, rolling mill gearbox seat, rolling mill roller track, crusher, vibrating screen, printing machinery, woodworking machinery, various industrial reducers, vertical self-aligning bearings with seats

IV. thrust self-aligning roller bearing

in this type of bearing, the spherical rollers are arranged obliquely. Because the raceway surface of the race is spherical and has self-aligning performance, it can allow the shaft to have several inclinations, and the axial load capacity is very large. It can bear several radial loads while bearing axial loads. Oil lubrication is generally used during use

thrust self-aligning roller bearing

main uses: hydraulic generator, vertical motor, marine propeller shaft, reducer for rolling screw of steel mill, tower crane, coal mill, extruder, forming machine

v. tapered roller bearings from the physical properties

this kind of bearings are equipped with cone-shaped rollers, which are guided by the large flange of the inner ring. In design, the apex of the cone surface of the inner ring raceway surface, the outer ring raceway surface and the roller rolling surface intersects at a point on the bearing centerline. Single row bearing can bear radial load and one-way axial load, and double row bearing can bear radial load and two-way axial load, which is suitable for bearing heavy load and impact load

tapered roller bearing

main purpose: Automobile: front wheel, rear wheel, transmission, differential pinion shaft. Machine tool spindle, construction machinery, large agricultural machinery, railway vehicle gear reducer, rolling mill roll neck and reducer

VI. deep groove ball bearing

structurally, each ferrule of deep groove ball bearing has a continuous groove raceway with a cross-section of about one-third of the circumference of the equatorial circle of the ball. Deep groove ball bearings are mainly used to bear radial loads, but also can bear certain axial loads. When the radial clearance of the bearing increases, it has the property of angular contact ball bearing and can bear the axial load alternating in two directions. Compared with other types of bearings with the same size, this type of bearing has small friction coefficient, high limit speed and high precision. It is the preferred bearing type for users to select

deep groove ball bearing

main uses: automobile, tractor, machine tool, motor, water pump, agricultural machinery, textile machinery, etc

VII. Thrust ball bearing

is composed of washer shaped raceway ring with raceway and ball and cage components. The raceway ring matched with the main components of the shaft is called shaft ring, and the raceway ring matched with the housing is called seat ring. The two-way bearing fits the middle ring with the secret shaft. The one-way bearing can bear one-way axial load, and the two-way bearing can bear two-way axial load (neither can bear radial load)

thrust ball bearing

main uses: automobile steering pin, machine tool spindle

VIII. Thrust roller bearing

thrust roller bearing is used to bear the combined load in the meridional direction of the shaft dominated by axial load, but the meridional load shall not exceed 55% of the axial load. Compared with other thrust roller bearings, this kind of bearing has lower friction coefficient, higher rotating speed and self-aligning ability. The roller of 29000 type bearing is an asymmetric spherical roller, which can reduce the relative sliding of the stick and the raceway in the work. Moreover, the roller is long, the diameter is large, the number of rollers is large, and the load capacity is large. It is usually lubricated by oil, and grease lubrication can be used in some low-speed situations

thrust roller bearing

main purpose: hydraulic generator, crane hook

IX. cylindrical roller bearing

roller of cylindrical roller bearing "Zimmermann indicates that it is usually guided by two retaining edges of a bearing ring, and the cage The roller and the guide ring form an assembly, which can be separated from another bearing ring, belonging to a separable bearing. This kind of bearing is easy to install and disassemble, especially when the inner and outer rings are required to be interference fit with the shaft and housing. Such bearings are generally only used to bear radial loads, and only single row bearings with retaining edges on both inner and outer rings can bear small steady axial loads or large intermittent axial loads

cylindrical roller bearing

cylindrical roller bearing

main uses: large motors, machine tool spindles, axle boxes, diesel engine crankshafts, automobiles, and transformer boxes that are firmly supported

ten and four point contact ball bearings

can bear radial load and two-way axial load. A single bearing can replace the angular contact ball bearing with front combination or back combination. It is suitable for bearing pure axial load or synthetic load with large axial load components. This kind of bearing can form one of the contact angles when bearing axial load in any direction( α), Therefore, the ferrule and the ball are always in contact on both sides of any contact line

four point contact ball bearing

main uses: aircraft jet engine, gas turbine

Xi. Thrust cylindrical roller bearing

is composed of washer shaped raceway ring (shaft ring, seat ring), cylindrical roller and cage components. Cylindrical rollers are processed with convex surface, so the pressure between rollers and raceway surface is evenly distributed, which can bear unidirectional axial load, with large axial load capacity and strong axial rigidity

thrust cylindrical roller bearings

main applications: oil drilling rigs, iron and steel machinery

XII. Thrust needle roller bearing

thrust needle roller bearing

separate bearing is composed of raceway ring, needle roller and cage assembly, which can be combined with thin raceway ring (W) processed by stamping or thick raceway ring (WS) processed by cutting. Non separable bearing is an integral bearing composed of precision stamped raceway ring, needle roller and cage assembly, which can bear unidirectional axial load. This kind of bearing takes up small space and is conducive to the compact design of machinery. Most of them only use needle roller and cage assembly, and the mounting surface of shaft and housing is used as raceway surface

main uses: speed change devices for automobiles, cultivators, machine tools, etc

XIII. Thrust tapered roller bearing

this kind of bearing is equipped with a cone-shaped roller (the big end is spherical), and the roller is accurately guided by the retaining edge of the raceway ring (shaft ring, seat ring). In design, the apex of the raceway surface of the shaft ring and seat ring and the conical surface of the roller rolling surface intersect at a point on the bearing centerline. The one-way bearing can bear one-way axial load, and the two-way bearing can bear two-way axial load

thrust tapered roller bearing

main purpose:

one way: crane hook, oil rig swivel

bidirectional: roll neck of rolling mill

XIV. Outer spherical ball bearing with seat

outer spherical ball bearing with seat is composed of outer spherical ball bearing with seal on both sides and cast (or steel plate stamping) bearing seat. The internal structure of the outer spherical ball bearing is the same as that of the deep groove ball bearing, but the inner ring of this bearing is wider than the outer ring, and the outer ring has a truncated spherical outer surface, which can be automatically aligned with the concave spherical surface of the bearing seat

outer spherical ball bearing with seat

main applications: mining, metallurgy, agriculture, chemical industry, textile, printing and dyeing Conveying machinery, etc

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