Angular Contact Ball Bearings

Angular contact ball bearings are one of the general rolling bearings with extensive applications on high-precision and high-speed rotating machines. They have the ability to support both radial loads and axial loads at the same time, and the contact angle affects the capacity to support axial loads: the greater the contact angle, the larger the bearing capacity for axial loads. 15°, 25°, and 40° are the usual contact angles for angular contact ball bearings, and the applications are matched with various contact angles. Even though angular contact ball bearings can be employed individually, they are fitted in pairs or multiple combinations to achieve higher load ratings and operational stability. Such as back-to-back (DB), face-to-face (DF), or tandem (DT) fitting allows axial clearance adjustment and optimization of bearing performance.

LNB Bearing provides a full range of high-quality angular contact ball bearings at affordable prices and has customization options available to fit customers' specific needs.

Single Row Angular Contact Ball Bearing

Matched Angular Contact Ball Bearings

3. double row angular contact ball bearing

Double Row Angular Contact Ball Bearings

Four Point Contact Ball Bearings

5. separable angular contact ball bearing

Separable Angular Contact Ball Bearings

1. What is angular contact ball bearing？

The angular contact ball bearing is a precision type of rolling-element bearing for handling combined radial and axial loading conditions. It is employed primarily in high-rigidity, high-accuracy, high-speed rotation applications, e.g., machine tool spindles, motors, etc.

Compared to standard deep groove ball bearings, angular contact bearings feature precision-milled raceways on outer and inner rings with a specified angle of inclination relative to the rotating axis - typically 15°, 25°, or 40° contact angles. The axial load capacity is directly affected by this geometric configuration with the increase of the contact angle, the axial carry-loading is enhanced.

2. Types of Angular Contact Ball bearings

(1)Single Row Angular Contact Ball Bearings
Single row angular contact ball bearing can only bear one-way axial load, it has a contact angle, generally 15 °, 25 ° or 40 °, the larger the contact angle, the greater the axial load carrying capacity.

(2)Matched Angular Contact Ball Bearings
Matched angular contact ball bearings are formed by combining two single-row bearings, which can be back-to-back (DB), face-to-face (DF) or tandem (DT) configurations to adapt to different axial loads and rigidity requirements.

(3)Double Row Angular Contact Ball Bearings
Double-row angular contact ball bearings are equivalent to two single-row bearings combined back to back, sharing a common outer ring, able to withstand bidirectional axial loads and larger radial loads. Because of the compact structure, widely used in agricultural machinery, automobile transmission and industrial transmission system.

(4)Four Point Contact Ball Bearings
The raceway design of four-point contact ball bearings enables them to withstand bi-directional axial loads in the same bearing and occupy little space. They are suitable for applications with limited space and large axial loads, such as aerospace equipment, crane slewing mechanisms and rotary tables.

(5)Separable Angular Contact Ball Bearings
Separate type angular contact ball bearing inner ring or outer ring can be split, easy to install and dismantle, usually used for high precision, high speed rotating equipment, such as aviation engine, turbine machinery and precision instruments.

3. Angular Contact Ball Bearing Characteristics

(1)Can simultaneously withstand radial and axial loads: Due to its inner and outer ring raceways there is a certain angle (contact angle), the bearing can withstand radial loads in the rotation process at the same time, support one-way or two-way axial load.

(2)Suitable for high-speed operation: Precision design, low friction, able to operate stably at high speeds.

(3)High rigidity: Mounted in pairs or in multiple combinations (e.g. DB, DF, DT arrangement) can enhance the bearing capacity and system rigidity.

(4)A variety of structural forms: Including single-row, double-row, four-point contact, separation type and other different types, in order to adapt to the needs of a variety of mechanical equipment.

4. Angular Contact Ball Bearing Application

Angular contact ball bearings are widely used across various industries due to their ability to withstand both radial and axial loads while offering high rotational precision and stiffness.

(1)Machine Tool Spindles: Angular contact ball bearings, especially when mounted in pairs, enhance machining accuracy by providing high stiffness, precision, and speed. They also help reduce vibration and heat generation, improving overall performance.

(2)Electric Motors & Power Equipment: In high-speed electric motors, wind turbines, and other power machinery, angular contact ball bearings ensure reliable operation with low friction, supporting smooth and efficient performance.

(3)Automotive Industry: Found in key components such as wheels, gearboxes, steering systems, and clutches, these angular contact ball bearings contribute to vehicle stability, durability, and enhanced driving performance.

(4)Medical Machinery: Essential for precision devices like CT scanners, dental equipment, and artificial heart pumps, these angular contact ball bearings offer low noise and high accuracy, ensuring smooth and efficient operation.

(5)Industrial Robotics & Automation: Used in robotic joints, linear guides, and automation machinery, they provide high rigidity and precise movement control, crucial for accuracy and efficiency.

(6)Precision Instrument: Optical instruments, measuring devices, and high-precision testing equipment benefit from angular contact ball bearings due to their low friction and high rigidity, ensuring accurate and reliable results.