Bearing Classification Details (1)
Source: China Bearing Network | Time: 2013-01-01
Deep groove ball bearings are one of the most commonly used types of rolling bearings. They are designed to handle both radial and bidirectional axial loads, making them ideal for high-speed applications with low noise and vibration. These bearings typically come with a steel dust cover or rubber seal and are pre-lubricated with excess grease. Some models feature a snap ring or flange on the outer ring, allowing for simple axial positioning and ease of installation within machinery. The design of deep groove ball bearings allows for increased load capacity due to a larger number of balls and an additional groove in the outer ring. The cages used can be made from various materials, including stamped steel (wave-shaped, crown-shaped, S-shaped), copper alloys, phenolic resin, or molded plastic. **Primary Applications:** - **Automotive:** Rear wheels, transmissions, and electrical components - **Electrical:** General-purpose motors and household appliances - **Industrial:** Construction equipment, rail vehicles, agricultural machinery, and more Angular contact ball bearings have a contact angle between the inner and outer rings, with standard angles of 15°, 30°, and 40°. The larger the contact angle, the greater the axial load capacity, while smaller angles allow for better high-speed performance. Single-row bearings can support radial and unidirectional axial loads, while double-row or combined configurations (DB, DF, DT) are suitable for radial and bidirectional axial loads. These bearings are often used in high-speed and precision applications such as machine tool spindles. **Common Cage Types:** - Stamped steel cages (bowl-shaped, S-shaped, crown-shaped) - Copper alloy or phenolic resin cutting cages - Molded resin cages **Primary Uses:** - **Single-row:** Machine tool spindles, high-frequency motors, gas turbines, centrifuges, and small car front wheels - **Double-row:** Oil pumps, root blowers, air compressors, transmissions, and fuel injection pumps Four-point contact ball bearings are capable of handling both radial and bidirectional axial loads. They can replace angular contact ball bearing combinations in some cases and are especially useful when dealing with pure axial loads or axial load components. These bearings maintain constant contact between the balls and raceways, regardless of the direction of the axial load. **Cage Type:** - Typically made from copper alloy cutting cages **Primary Uses:** - Aircraft jet engines, gas turbines, and other high-performance systems Self-aligning ball bearings feature a spherical outer ring raceway, allowing them to automatically adjust for misalignment caused by shaft deflection or housing issues. Tapered bore bearings can be easily mounted using fasteners on the shaft. **Common Cage Designs:** - Daisy-shaped, sunflower-shaped, 22...2RS, 23...2RS, etc. **Applications:** - Woodworking and textile machinery, drive shafts, and vertical self-aligning bearings
**Related Bearing Knowledge:** - Bearings for high-speed rotation - Thrust bearing devices - Cylindrical roller thrust bearings - How to distinguish genuine bearings **Professor's Tip:** Learn how to identify authentic bearings to avoid counterfeit products. This article is linked to http:// Please cite China Bearing Network: http:// Previous: "KOYO Bearing Steel Surface Strengthening" Solution Description: Factors Affecting Bearing Life
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