Angular contact ball bearing

Angular contact ball bearings are an important type of rolling bearing:

Structural characteristics

Contact angle: The angle between the normal of the contact point between the rolling element and the raceway of an angular contact ball bearing and the radial plane of the bearing is called the contact angle. Common contact angles include 15 °, 25 °, 40 °, etc. The larger the contact angle, the stronger the bearing's ability to withstand axial loads.

Single and double row designs: There are single row and double row designs. Single row angular contact ball bearings can only withstand axial loads in one direction and usually need to be used in pairs to balance axial forces; Double row angular contact ball bearings can withstand axial loads in two directions simultaneously and can operate under more complex stress conditions.

Working principle

When angular contact ball bearings are subjected to radial loads, a component force related to the contact angle is generated at the contact point between the rolling elements and the raceway, which enables the bearing to withstand axial loads. In practical applications, according to the specific force situation, bearings with different contact angles can be selected to meet the bearing requirements for axial and radial loads.

Performance advantages

Simultaneously bearing radial and axial loads: capable of effectively bearing a certain amount of axial load while bearing radial loads, suitable for working conditions with both radial and axial forces.

Good high-speed performance: The friction between the rolling elements and the raceway of angular contact ball bearings is small, and they can operate stably at high speeds, with good high-speed performance.

High precision: It can achieve high rotational accuracy and is suitable for equipment with strict requirements for rotational accuracy, such as machine tool spindles, precision instruments, etc.

application area 

Machine tool industry: commonly used for machine tool spindles, capable of withstanding the radial and axial loads generated by the spindle during cutting, ensuring the rotational accuracy and stability of the spindle, thereby improving machining accuracy.

Aerospace: Used in aircraft engines, landing gear and other components. For example, the rotor support bearings of an engine need to withstand enormous centrifugal and axial forces during high-speed rotation, and the high performance of angular contact ball bearings can meet these requirements, ensuring the reliable operation of the engine.

Automotive industry: Angular contact ball bearings are sometimes used in the transmission, wheel hub bearings, and other parts of automobiles. In the gearbox, it can withstand the radial and axial forces generated during gear transmission, ensuring the normal operation of the gearbox; In wheel hub bearings, they can adapt to the complex stress conditions during vehicle operation, improving driving safety and stability.

Electric tools, such as electric drills and electric grinders, require their motor shafts and transmission components to withstand certain radial and axial loads. Angular contact ball bearings can provide reliable support in a compact space, meeting the requirements of high speed and high precision for electric tools.