Wafangdian AA Bearing Trade Co.,Ltd

Angular Contact Ball Bearings

angular ball bearings are also called angular contact radial thrust ball bearing. This type of bearing is particularly suitable for taking up combined loads (radial and axial load) as well as pure axial loads and can be operated at relatively high speeds. The axial load carrying capacity of angular contact ball bearings increases with increasing of contact angle. The bigger the contact angle the better the axial load carrying capacity is.

The contact angle  is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane along which the load is transmitted from one raceway to another and a line perpendicular to the bearing axis.

The allowable angle error of a single row contact ball bearing is limited. The angle errors of inner ring and outer ring are depended on radial clearance bearing dimension internal structure and the force or force moment acting on bearings. The relationship of those factors is so complicated that an accurate number cant be given at present.

If the clearance of paired angular contact ball bearings(or double-row angular contact ball bearing) especially of those arranged back to back is respectively small balls and cages would accommodate more extra load. Once angular errors were made between inner ring and outer ring the bearing life would be shortened. Any angular error would cause noise.

 

(Fig 1)

 

Single Row Angular Contact Ball Bearings


Single Row Mounting

Single row angular contact ball bearings can carry axial loads acting in one direction only. An axial force caused by a radial load imposed on the bearing must be counteracted. Consequently the bearings are normally adjusted by a second bearing.

The single row angular contact ball can only carry axial load in single direction. They are mainly used in the arrangement where there is only one bearing at one end of the transmission shaft.

standard single row angular contact ball bearings have separable and non-separate designs. Contact angle of separable bearings is 15o contact angles of non-separable bearings are 15o 25oor 40o respectively. Separable angular contact ball bearings can be divided into removable inner ring and removable outer ring according to the internal structures.

Angular contact ball bearing with an angle 400 can bear comparably heavy axial loads. The structure of this kind of bearing is non-separable. In order to fill more balls and increase load carrying capacity the shoulder height of each side of inner ring and outer ring is different.

 

(Fig 2)

 

Single row angular contact ball bearings can carry axial loads acting in one direction only. An axial force caused by a radial load imposed on the bearing must be counteracted. Consequently the bearings are normally adjusted by a second bearing.

The single row angular contact ball can only carry axial load in single direction. They are mainly used in the arrangement where there is only one bearing at one end of the transmission shaft.

standard single row angular contact ball bearings have separable and non-separate designs. Contact angle of separable bearings is 15o contact angles of non-separable bearings are 15o 25oor 40o respectively. Separable angular contact ball bearings can be divided into removable inner ring and removable outer ring according to the internal structures.

Angular contact ball bearing with an angle 400 can bear comparably heavy axial loads. The structure of this kind of bearing is non-separable. In order to fill more balls and increase load carrying capacity the shoulder height of each side of inner ring and outer ring is different.

 

Mounted in Pairs


In many situations single row angular contact ball bearings are supplied to customers in pairs or multi-arrangement.

angular contact ball bearing arranged in pairs is processed specially. When bearings are installed abutting each other any kind of arrangement can help to achieve predetermined inner clearance preload and evenly distributed load. No adjustment is need again.

Angular contact ball bearings in pairs are used in these applications when single angular contact ball bearing load carrying capacity is not enough when carrying axial (radial) combined load and when carrying axial load in more than two directions.

There are three ways to arrange angular contact ball bearings: in tandem back to back and face to face.

 

When arranged in tandem the load lines are in parallel. The radial and axial loads are evenly divided between the bearings. The bearing pair is only able to accommodate axial load in one direction.

The load lines of bearings mounted back-to-back diverge towards the bearing axis. Axial loads acting in both directions can be accommodated but only by one bearing in each direction. Bearings mounted back-to-back provide a relatively stiff arrangement which can also take up titling moments.

The loads lines of bearings mounted face-to-face converge towards the bearing axis. Again axial loads acting in both directions can be carried but only by one bearing in each direction. This kind of arrangement is not so stiff as the back-to-back and it is one is also less suitable for taking up titling moments.

 

Three (Four) Points Contact Ball Bearings

Three(four) points contact ball bearing is a single row angular contact ball bearing with one split inner ring or one split outer ring. It can carry axial load and can limit the axial displacement in both directions. It takes up less axial space than a double row bearing. The split inner ring permits the incorporation of a large number of balls and as a consequence the load carrying capacity is high. The bearing is separable so that the inner ring and the outer ring with ball and cage assembly can be mounted individually.

 

Double-row Angular Contact Ball Bearings

The design of double row angular contact ball bearings is almost the same with that of single row angular contact ball bearings but the axial dimension is comparably small. Double row angular contact ball bearings correspond in function to two single row bearings arranged back-to-back. The double- row bearings can also accommodate axial loads in both directions as well as titling moments but narrower.

Double row angular contact ball bearing has an outer ring and an inner ring (or two inner rings).

Angular contact ball bearings with other structures are supplied by: angular contact ball bearing with seals (shields) or snap groove on outer ring etc. all types cant be listed in this catalogue If customers need please consult technical department. 

 

Cages

Cages of angular contact ball bearings supplied by are pressed steel cages machined solid cages special glass fiber reinforced polyamide 66 cages and etc. Machined solid cages are mainly made of brass bronze various light alloys and phenolic resin. As angular contact ball bearings are used as high speed spindle bearings cages are usually made of phenolic resin. Cages of different material are identified by suffix. Further details will be found in catalogue Bearing material.

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