Ball radial thrust bearing(Fig. 24.10) is designed for combined (radial and axial) or purely axial loads. Bearings mounted in pairs absorb axial forces acting in both directions. Used at high rotation speeds.  

Ball angular contact bearings almost always used in a paired mirror installation with mandatory axial tightening. The tightening method and the location of the bearings affect the operation of the assembly.  

The angular contact ball bearing (see Fig. 17.1, b) is designed to support a combined load: radial and one-sided axial. The load capacity of these bearings is higher than that of radial ball bearings due to more rolling elements that can be placed in the bearing due to the presence of a bevel on the outer or inner ring. As a increases, the axial load capacity of the bearing increases, and the maximum rotation speed and permissible radial load decrease. Separators for these bearings are usually massive. Currently, bearings are produced with contact angles of 15, 25 and 36, which are distinguished by the presence of a bevel on the inner ring and the centering of the cage along the outer ring. This makes it possible to significantly increase the maximum speed due to more favorable lubrication conditions.  

An angular contact ball bearing with a split inner ring (see Fig. 17.1, d), depending on the shape of the raceways, has three or four-point contact of the ball with the rings and is designed to absorb radial and axial loads in both directions. There are similar bearings with a split outer ring.  

Angular contact ball bearings (Fig. 3.160) are capable of supporting combined radial-axial loads. Their axial load capacity depends on the contact angle a. As the angle a increases, the axial load capacity increases due to a decrease in the radial load capacity. Bearings support axial load in one direction only.  

The angular contact ball bearing is lubricated by oil, which is sprayed through the bearings by means of an oil ring. The oil, after passing through the bearings, returns back to the reservoir and is cooled by water.  

An angular contact ball bearing is designed to operate under conditions of simultaneously acting radial and axial loads (for axial forces - only in a certain direction); can also take purely axial loads. Bearings mounted in pairs can also support purely radial loads. Preload increases the bearing's load capacity, increases its rigidity, rotational accuracy and durability. When installed in paired sets with a preload that rigidly fixes the shaft in the radial and axial directions in both directions, adjustment of the preload is required depending on the axial load. These bearings are used in rigid double-support shafts with small distances between the supports.  

Angular contact ball bearings are designed to simultaneously support radial and one-sided axial loads. Used at a shaft rotation speed of 1000 rpm.  

An angular contact ball bearing is designed to operate under conditions of simultaneously acting radial and axial loads (for axial forces - only in a certain direction); can also take purely axial loads. Bearings mounted in pairs can also support purely radial loads. Preload increases the bearing's load capacity, increases its rigidity, rotational accuracy and durability. When installed in paired sets with a preload that rigidly fixes the shaft in the radial and axial directions in both directions, adjustment of the preload is required depending on the axial load. These bearings are used in rigid double-support shafts with small distances between the supports.  

Bearings are produced in a wide range and are divided into sizes and designs. The simplest, most reliable and easy to maintain are radial ball bearings. They are divided into several subspecies, each with its own purpose.

Single row bearings are used as rolling bearings that are economical to manufacture. They most often come with stamped cages, while large ball bearings are used with brass machined cages. The raceways have arcs of slightly larger radius than the balls. It follows from this that, in addition to radial ones, they are able to withstand axial loads on both sides, including when operating at high speeds.

Catalog:

Radial single-row ball bearings are manufactured with shields (suffixes Z or 2Z), as well as contact seals (suffixes RSH, 2RSH or DU, DDU) on one side or on both sides. Bearings are produced with lubrication for the entire service life if they are closed (lubrication temperature range from -30 0 to +110 0 C). Under no circumstances should they be heated before installation! Manufacturers recommend using a special installation tool.

Radial ball bearings with a groove on the outer ring simplify the design of the bearing assembly. They are secured in the housing using a mounting ring. Mounting rings are available separately or with a bearing.

Radial single row ball bearings are produced in the following configurations:

• instrument and miniature;
• stainless steel;
• with a small cross section (thin rings);
• inch bearings;
• for kiln trolleys;
• with conical holes;
• for conveyor rollers;
• with a spherical outer ring.

Single row ball bearings are installed in pairs if the shaft is fixed in both directions in the axial direction with clearance. Paired radial ball bearings are matched one to one in such a way that spacer rings and other devices are not used during installation, and the load is distributed evenly. Bearing pairs are available in three different designs:

• tandem installation (DT);
• installation back to back (DB);
• installation front end to front end (DF).

To ensure correct installation of bearings, a “V” mark is applied to the outer surface of the rings, which means that the set will operate in accordance with the specified technical characteristics. The selected pair of bearings is supplied in a common package.

You can select an angular contact ball bearing using our bearing catalog

Angular contact ball bearings (ball bearings) designed to withstand radial and axial loads. Their ability to absorb axial load depends on the contact angle, which is the angle between the plane of the ball centers and the straight line passing through the center of the ball and the point of contact of the ball with the raceway. As the contact angle increases, the axial load capacity increases due to a decrease in the radial load capacity.

In terms of speed characteristics, angular contact bearings are not inferior to single-row radial bearings. An increase in the contact angle leads to a decrease in permissible rotation speeds and an increase in the one-sided axial load perceived by the bearings.

The bearings are installed on rigid double-support shafts with a small distance between the supports, as well as in units where it is necessary to adjust the clearance in the bearings during installation or during operation.

A single-row radial thrust ball bearing absorbs radial and axial loads, and axial loads only in one direction; radial thrust ball bearing is installed opposite the second bearing, which takes the load in opposite direction. Radial thrust ball bearings are one-piece. They are suitable for high speeds. The ability to self-install is very low.

Separators

Most angular contact ball bearings have a massive cage with windows made of glass-filled polyamide. They are suitable for long-term temperatures up to 120 o C. When lubricating, additives contained in the oil can lead to a reduction in the service life of the separator. Old oil in conditions high temperatures can also reduce the longevity of the separator, so oil change intervals must be observed.

Bearing in universal design for complete installation

These bearings are specially produced adapted for installation in any order, with the only condition - they must be mounted close to each other; in this case, the prescribed value of the internal axial clearance or uniform load distribution is achieved without the use of spacers or other similar devices.

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