Angular Contact Ball Bearings: Types and their details

The purpose of angular contact ball bearings is to satisfy the constantly changing needs of equipment producers.
Ball bearings with angular contacts have a contact angle that can support heavy axial loads in addition to radial stresses.
These bearings are often utilized in pairs or multi-bearing sets because radial load generates an axial component.

Type of Angular Contact Ball Bearings

Following are the different types of angular contact ball bearings

Single-Row Angular Contact Ball Bearings (Pressed Steel Cages & Machined Brass Cages)

When a radial or mixed load is applied, the construction of angular contact ball bearings provides an axial component; as a result, two opposed bearings or a multi-bearing arrangement are needed.
Single-row angular contact ball bearings are frequently preloaded to strengthen their stiffness, especially in the main spindles of machine machines where good running precision is essential.
In general, pressed steel, moulded resin, or machined brass cages are used in bearings with contact angles of 30° (A) or 40° (B), however machined synthetic resin or specialty polyamide resin cages are employed in some applications.

Features:

Withstand axial and radial stresses
With typical contact angles of 30° or 40°, these bearings are capable of supporting both radial and axial loads in one direction.
different contact angles
Smaller contact angles are preferable for high-speed rotation, whereas larger contact angles provide higher capacity for axial stresses.
The internal clearance of the two opposing bearings is changed. Although polyamide resin cages are mainly utilised for high-precision bearings with contact angles under 30°, pressed steel cages are still often employed

Application

extreme stiffness
ideal for uses that demand bearing stiffness.
elevator hoists, compressors, screw chillers, and pumps

Matched Angular Contact Ball Bearings

A number of arrangement options are available for matched angular contact ball bearings to accommodate the stresses in various applications.

Features

Modular arrangements
The way the bearings are put together determines what an angular ball bearing set is. Bearings can be positioned either face-to-face (DF), back-to-back (DB), tandem (DT), or with both faces pointing in the same direction.
withstand axial and radial stresses
Radial and axial loads can be supported in both directions by DF and DB configurations. Large axial loads applied in a single direction are handled via DT systems.
Machine tools frequently employ high precision Precision class (P5 or higher) setups with their main spindle. In this instance, the internal clearance is modified by applying a preload dependent on the operating circumstances. They also employ a unique fit.

Applications

Elevator hoists, compressors, screw chillers, and pumps

Double-Row Angular Contact Ball Bearings

A bearing with a single inner ring and outer ring is created by taking a back-to-back paired mounting of single-row angular contact ball bearings. Due to their ability to withstand axial loads in both directions and their capability to handle moment loads, double-row angular contact ball bearings are frequently utilised as fixed-end bearings.
Pressed steel cages are a characteristic of these bearings.

Features

compact style
A single inner ring and outer ring make up double-row angular contact ball bearings, which allow an integrated back-to-back mounting of two single-row ACBBs.
maintain axial loads
Axial (thrust) loads can be applied to double-row ACBBs in either direction.

Application

Belt conveyors, compressors, press machines, and automated guided vehicles (AGVs)

Four-Point-Contact Ball Bearings

Ball bearings with four points of contact have a split inner ring. These bearings are capable of withstanding significant axial loads in both directions with just one.
A high axial load capacity is possible with a 35° contact angle. When the axial load is large, this kind is appropriate for bearing combination loads or pure axial loads.
The brass cages on these bearings have been machined.

Features

Simple to manage
These unique single-row angular contact ball bearings have an outer ring that can be separated from two inner rings that can be divided along a plane perpendicular to the shaft centre.
high capacity for axial loads
Four-point-contact bearings with a contact angle of 35° are ideal for pure or combination loads with high axial loads.
Compact
Face-to-face or back-to-back bearing arrangements can be replaced with a single bearing.

Application

Transmissions for tractors, robot gearboxes, and servomotors

How Angular Contact Ball Bearings Work

The balls are positioned at an angle in angular contact bearings because the inner and outer raceways are slightly out of alignment. They are suited for radial and axial loads because of this offset. The fundamental advantage of having bearings organised at an angle is that as the angle of the bearing balls rises, so does the axial load capacity. The bearing’s service life is also extended by this angular positioning.

Bearings are used in rotating applications to lower friction and boost machine performance even while carrying enormous loads. With angular contact bearings, working speeds are increased and durability is improved. They can be employed in situations with high axial, radial, and speed stresses.

Angular Contact Ball Bearing Components And Terminology

The inner and outer raceways of angular contact bearings are separated by a set of rolling balls. At the point where the balls and the raceway make contact, the bearing’s axis is angled. One wall of the inner and outer rings is thicker than the other, creating an asymmetrical design. Compared to deep groove ball bearings, angular contact ball bearings are capable of working at significantly greater speeds and can support a mix of radial and axial stresses.

What Are Angular Contact Bearings Used For?

Numerous industrial applications and machine locations use angular contact bearings. They are frequently utilised for main shaft and gearbox supports, as well as pump and turbine applications. In some situations, angular contact ball bearings perform better than other bearing types.

Angular contact bearings provide several benefits, including the capacity to support heavy loads, reduced noise and vibration levels, and the capacity to function at high speeds. Aside from that, angular contact bearings are frequently employed in applications with constrained space, such turbine housings.

In many high-precision applications, like aircraft and rocket engines, where dependability and a long service life are essential, angular contact bearings are frequently utilised. Bearings in these sectors must be able to handle heavy loads and harsh temperatures. As a result, angular contact bearings are typically constructed from unique substances like titanium or high-strength steel.