Introduction To Linear Bearing Series
Introduction To Linear Bearing Series
How To Select The Type Of Rolling Bearing
How To Select The Type Of Rolling Bearing

Knowledge Of Angular Contact Ball Bearing

Angular contact ball bearing

*There are contact angles between the ferrule 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 conducive to 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 bidirectional axial load

*DT combination is suitable for occasions with large unidirectional axial load and insufficient rated load of single bearing

*ACh type bearings for high-speed use have small ball diameter and many balls, which are mostly used for machine tool spindles

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

*Structurally, two single row angular contact ball bearings combined on the back share the inner ring and outer ring, which can bear radial load and bidirectional axial load

*Bearings without filling grooves are also of the sealed type

Main applicable cages:

*Steel plate stamping cage (bowl shape… Single row; s shape, crown shape… Double row)

*Copper alloy or phenolic resin cut cage, synthetic resin formed cage

Knowledge Of Angular Contact Ball Bearing

Main purpose:

*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

Four point contact ball bearing

*It can withstand radial load and bidirectional axial load

*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 component

*This kind of bearing can form one of the contact angles when bearing axial load in any direction( α), Therefore, the ferrule is in contact with the two sides of the ball assembly * on any contact line

Main applicable cages:

Copper alloy cut cage

Main purpose:

Aircraft jet engine, gas turbine

Characteristics of angular contact ball bearings

Characteristics Of Angular Contact Ball Bearings

Angular contact ball bearing,

namely radial thrust ball bearing, can be loaded with more steel balls, its radial bearing capacity is greater than that of ordinary ball bearing, and can also bear large axial load or pure axial load at the same time. Its allowable working speed is similar to that of deep groove ball bearing and its support rigidity is stronger, but it requires accurate installation and is very sensitive to axis misalignment error,

Generally, it does not need to bear the radial load alone, but it must bring additional axial load while bearing the radial load. This kind of bearing has many variants and is widely used. It is often made into three series with 15 °, 25 ° and 40 ° contact angles.

The larger the contact angle is

, the higher its axial load capacity is. However, it is appropriate to use a small contact angle at high speed.

Most of these bearings are used in pairs for small-span rigid double support shafts or precision spindles. When in use, the clearance should be carefully adjusted.

By changing the axial distance between the inner and outer rings of the bearing, the internal clearance of the bearing can be adjusted. At the same time, several sets of bearings can be installed in parallel and given a certain pre interference, which can improve the rigidity of the bearing system.

A single bearing of this type

can only bear the axial load in one direction. At the same time, other bearings need to be configured to offset their additional axial forces. When installed in pairs, their additional axial forces offset each other, and they can bear the axial load of two forces upward, and have strong axial limit capacity in two directions,

Generally, two sets of bearings are installed in pairs, with their outer ring wide end face opposite (back-to-back) or narrow end face opposite (face-to-face), in which the rigidity of the back-to-back installation bearing system. In order to facilitate installation in pairs or groups, some bearing factories supply bearings in pairs, three sets in groups and four sets in groups.

the processing consistency of the supplied bearings in the same batch is good, the load is borne more evenly during use, and the additional axial forces offset each other more thoroughly.

This type of bearing can be divided into two types: separated type and non separable type. The separated type bearing is used when the installation conditions are limited and the outer ring or inner ring is required to be removed from the whole set of bearings for separate installation.

Because the separated type angular contact ball bearing is widely used in magneto, it is also called magneto bearing. In this type of bearing, the locking port is on the inner ring, which can be adapted to higher speed.