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KM BEARING

1 sales1@kmbearings.com    +86 15263512830  Nance
1 sales2@kmbearings.com   1+86 13475887259  David
1 sales5@kmbearings.com     +86 15166506285  Linda
1 admin@kmbearings.com   1 +86 18663554522  Anna
1 Yandian Industrial Park, Linqing City, Shandong Province

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Classification of bearings

[Abstract]:

Bearings are classified as follows:

1. Deep groove ball bearing

The most representative rolling bearings are widely used

Can bear radial load and bidirectional axial load

It is suitable for high speed rotation and low noise and vibration

An adequate amount of grease is pre-filled in the sealed bearing with steel plate dust cover or rubber seal ring

Bearings with a stop ring or flange on the outer ring for easy axial positioning and installation inside the housing

The size of the maximum load bearing is the same as the standard bearing, but there is a filling groove in the inner and outer rings, which increases the number of balls loaded and improves the rated load

 

Main applicable cage: steel plate stamping cage (waveform, crown...Single row;S form...Double row)

Copper alloy or phenolic resin cutting cage, synthetic resin forming cage

Main application: automobile: rear wheel, transmission, electrical components

Electrical: general motors, household appliances

Other: instrument, internal combustion engine, construction machinery, railway rolling stock, loading, unloading and handling machinery, agricultural machinery, all kinds of industrial machinery

 

2. Angular contact ball bearings

There is a contact Angle between the ring and the ball, and the standard contact angles are 15°, 30° and 40°

The larger the contact Angle, the greater the axial load capacity

The smaller the contact Angle, the more favorable for high-speed rotation

Single row bearing can bear radial load and unidirectional axial load

DB combination, DF combination and double row bearing can bear radial load and two-way axial load

DT combination is suitable for the situation where the unidirectional axial load is large and the rated load of a single bearing is insufficient

High speed ACH bearing ball diameter small, ball number, mostly used for machine tool spindle

Angular contact ball bearings are suitable for high speed and high precision rotation

The two single-row angular contact ball bearings, which are structurally combined on the back, share the inner ring and the outer ring and can bear radial load and two-way axial load

Non-slotted bearings are also available in sealed form

 

Main applicable cage: steel plate press cage (bowl shape...Single row;S shape, crown shape...Double row)

Copper alloy or phenolic resin cutting cage, synthetic resin forming cage

Main applications: 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, all kinds of transmission, fuel injection pump, printing machinery

 

Four point contact ball bearings

Can bear radial load and bidirectional axial load

A single bearing may replace either the front assembly or the back assembly of angular contact ball bearings

It is suitable for the synthetic load which bears the pure axial load or the axial load component is big

One of these contact angles (alpha) can be formed when the bearings are subjected to axial loads in any direction, so that the rings are always in contact with the ball at two or three cuts on any contact line

Main applicable cage: copper alloy cutting cage

Main application: aircraft jet engine, gas turbine

 

4. Adjustable ball bearing

Because the raceway surface of the outer ring is spherical and has the ability of centering, it can automatically adjust the axis deviation caused by the deflection of the shaft or shell or different centers

Tapered bore bearings are easily mounted on the shaft using fasteners

Steel plate press cage: chrysanthemum shape...12, 13, 22...2 rs, 23...2 rs

Kwai shape...22, 23

Woodworking machinery, textile machinery drive shaft, vertical center bearing with seat

 

5. Cylindrical roller bearings

Cylindrical roller and race is line contact, the radial load capacity is big, which is applicable to bear heavy load and shock load, also applies to N type high speed rotation and axial movement, NU type can be able to adapt to shaft caused by thermal expansion or installation error and shell the change of relative position, the adaptation is used as the free end bearing can withstand a certain degree of NJ and NF type one-way axial load, NH type and NUP type two-way axial load can withstand a certain degree of inner ring and outer ring can be separated, convenient disassembly NNU model and NN model of radial load resistance strong rigidity, mostly used for machine tool spindle

 

Main applicable cage: steel plate stamping cage (Z shape), copper alloy cutting cage, pin cage, synthetic resin forming cage

Main applications: medium and large electric motors, generators, internal combustion engines, steam turbines, machine spindle, speed reducer, loading, unloading and handling machinery, all kinds of industrial machinery

 

6. Solid needle roller bearing

The inner ring bearing has the same basic structure as the NU type cylindrical roller bearing, but with the needle roller, the volume can be reduced and can bear large radial load

Main applicable cage: steel plate stamping cage

Main applications: automobile engine, transmission, pump, excavator crawler wheel, elevator, bridge crane, compressor

 

7. Tapered roller bearings

This kind of bearing is equipped with round tabular roller, which is guided by big inner guard edge

Designed so that the inner ring raceway surface, outer ring raceway surface and each conical surface of the roller rolling surface intersect at a point on the bearing center line

Single row bearing can bear radial load and unidirectional axial load, double row bearing can bear radial load and bidirectional axial load

Suitable for bearing heavy load and shock load

According to the different contact chest (alpha), it is divided into three types: small cone Angle, medium cone Angle and large cone Angle. The larger the contact Angle is, the greater the axial load capacity will be

Outer ring and inner components (inner ring and roller and cage components) can be separated for easy assembly and disassembly

Rear auxiliary code "J" or "JR" bearings have international interchangeability

This kind of bearing also USES inch series products

 

Main applicable cage: steel plate stamping cage, synthetic resin forming cage, pin cage

Main application: automobile: front wheel, rear wheel, transmission, differential pinion shaft.Machine tool spindle, construction machinery, large agricultural machinery, railway rolling stock gear reducer, rolling mill roll neck and reducer

 

8. Self-aligning roller bearing

The bearings are equipped with spherical rollers between the outer ring of the spherical raceway and the inner ring of the double raceway

Because the circular arc center of the outer ring raceway is consistent with the bearing center, it can automatically adjust the axis deviation caused by the deflection of the shaft or shell or different centers

Can bear radial load and bidirectional axial load.Especially the radial load capacity is large, suitable for bearing heavy load and impact load

Tapered bore bearings can be assembled and disassembled on the shaft by using fasteners or dismounting sleeves

There are two types of conical holes (taper) :

1:30 (auxiliary code: K30)......Suitable for series 240 and 241

1:12 (auxiliary code: K)......Applicable to other series

Oil hole, oil groove and locating pin hole (one) can be provided on the outer ring.Oil hole and oil groove can also be provided on the inner ring

 

Main applicable cage: copper alloy cutting cage, steel plate stamping cage, pin cage, synthetic resin forming cage

Main applications: papermaking machinery, speed reducer, axle of railway rolling stock, gear box stand of rolling mill, roller table of rolling mill, crusher, vibrating screen, printing machinery, woodworking machinery, all kinds of industrial speed reducer, vertical self-aligning bearing with seat

 

9. Thrust ball bearing

It consists of a gasket shaped raceway ring with raceway, a ball and a cage assembly

The raceway ring that fits the shaft is called the axle ring, and the raceway ring that fits the shell is called the seat ring.Two-way bearings will be the middle ring secret shaft

Unidirectional bearing can bear unidirectional axial load, and bidirectional bearing can bear bidirectional axial load (neither can bear radial load)

 

Main applicable cage: steel plate stamping cage, copper alloy or phenolic resin cutting cage, synthetic resin forming cage

Main application: automobile steering pin, machine tool spindle

 

10. Thrust cylindrical roller bearing

It is composed of washer - shaped raceway ring (shaft ring, seat ring), cylindrical roller and cage assembly.Cylindrical rollers are processed with convex surface, so the pressure between rollers and raceway surface is evenly distributed

Can bear unidirectional axial load

Axial load capacity, axial rigidity is strong

 

Main applicable cage: copper alloy cutting cage

Main applications: oil drilling rig, iron and steel machinery

 

Thrust needle roller bearing

The separation type bearing is composed of raceway ring, needle roller and cage components, which can be combined with thin raceway ring (W) processed by stamping or thick raceway ring (WS) processed by cutting

The non - separation bearing is a whole bearing which consists of raceway ring, needle roller and retainer assembly

Can bear unidirectional axial load

This kind of bearing takes up little space and is beneficial to compact mechanical design

Most only use needle roller and cage components, and the shaft and housing installation surface as raceway surface

 

Main applicable cage: steel plate stamping cage, synthetic resin forming cage

Main application: automobile, cultivator, machine tool, etc

 

Thrust taper roller bearing

This kind of bearing is equipped with round tabular roller (big end is spherical), which is guided by raceway ring (shaft ring, seat ring)

A point on the bearing center line at which the vertices of the conical surfaces of the shaft ring, the raceway surface of the seat ring and the rolling surface of the roller are intersected

Unidirectional bearing can bear unidirectional axial load, and bidirectional bearing can bear bidirectional axial load

Two-way bearing will be the middle ring and shaft fit, but because of the use of clearance fit, so must use shaft sleeve to make the main application of axial positioning of the middle ring cage: copper alloy cut cage

Main application: one way crane hook, oil rig swivel ring

Two-way: roll neck of steel rolling mill

 

13. Thrust self-aligning roller bearing

The spherical roller in this kind of bearing is arranged in an inclined manner. Because the raceway surface of the seat ring is spherical and has the ability of centering, it is allowed to have several inclined axes

Axial load capacity is very large, in the axial load can also withstand a number of radial load

Generally use oil lubrication

 

Main applicable cage: copper alloy cutting cage

Main applications: hydraulic generator, vertical motor, propeller shaft for ship, reducer for rolling screw in steel rolling mill, tower crane, coal mill, extruder, forming machine