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Angular Contact Bearings

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What is an Angular Contact Bearing?




An angular contact bearing is a type of rolling element bearing designed to handle both radial and axial loads. Unlike other bearings, angular contact bearings are specifically engineered to support axial loads in one direction as well as radial loads, thanks to their unique design and the angle at which the rolling elements (balls or rollers) contact the raceways.

Key Features of Angular Contact Bearings:

Contact Angle: The primary characteristic of angular contact bearings is the contact angle, which is the angle formed between the line of action of the load through the ball and the radial plane of the bearing. This angle allows the bearing to support significant axial loads. Common contact angles are 15°, 25°, 30°, and 40°.

Load Capacity: Angular contact bearings can handle higher axial loads compared to deep groove ball bearings due to their design. The load capacity is influenced by the contact angle, with larger angles providing greater axial load capacity.

Dual Load Capability: These bearings can handle a combination of radial and axial loads simultaneously, making them versatile for various applications.

High Precision: Angular contact bearings are often used in high-precision applications due to their ability to maintain accurate alignment under load.

Preloading Capability: They can be preloaded to eliminate internal clearance and improve rigidity, which is crucial for precision applications like machine tools and spindle bearings.


Types of Angular Contact Bearings:

Single-Row Angular Contact Bearings: Designed to support axial loads in one direction. They are often used in pairs or sets to accommodate bidirectional axial loads.

Double-Row Angular Contact Bearings: Essentially two single-row bearings mounted back-to-back, they can handle axial loads in both directions and provide higher radial load capacity.

Four-Point Contact Bearings: These bearings have a split inner ring, allowing them to handle axial loads in both directions and moderate radial loads. They are used where space is limited and bidirectional axial load support is needed.


Applications of Angular Contact Bearings:

Machine Tools: Used in spindles and other high-precision machinery where both axial and radial loads are present.

Automotive: Found in gearboxes, clutches, and other components requiring precise alignment and load handling.

Aerospace: Used in aircraft engines and other critical components where reliability and load capacity are essential.

Pumps and Compressors: Employed in applications where axial and radial loads need to be supported with high precision.

Electric Motors: Used in applications requiring high rotational speeds and load capacity.


Advantages of Angular Contact Bearings:

High Load Capacity: Capable of handling significant axial and radial loads simultaneously.

Precision and Rigidity: Ideal for applications requiring high precision and stiffness.

Versatility: Available in various configurations to suit different load and space requirements.

Durability: Designed to maintain performance under high loads and speeds.


Angular contact bearings are versatile and high-performance bearings designed to handle combined radial and axial loads. Their unique contact angle and ability to be preloaded make them suitable for a wide range of applications, from high-precision machine tools to robust automotive and aerospace components. By choosing the appropriate type and configuration, angular contact bearings can significantly enhance the performance and reliability of mechanical systems.

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