Double row angular contact ball bearings are widely used in industrial machinery where high load capacity, rigidity, and compact design are required. These bearings are essentially two single-row angular contact bearings arranged back-to-back within a single unit, allowing them to handle more complex load conditions.
The core structure includes an inner ring, outer ring, two rows of steel balls, and a cage that maintains proper ball spacing. The raceways of the inner and outer rings are designed at a specific contact angle, which enables the bearing to support both radial loads and axial loads in both directions. This bidirectional axial load capability is a major advantage over single-row designs.
One of the key benefits of double row angular contact ball bearings is their high load capacity. By incorporating two rows of rolling elements, these bearings can accommodate heavier loads without increasing the overall footprint significantly. This makes them ideal for applications where space is limited but performance demands are high.
In terms of materials, these bearings are typically manufactured from high-quality bearing steel, such as high-carbon chromium steel. This material provides excellent hardness, fatigue resistance, and wear resistance. In some specialized applications, stainless steel or ceramic hybrid designs may be used to enhance corrosion resistance or reduce friction.
Performance-wise, these bearings offer excellent rigidity and stability, making them suitable for high-speed and precision applications. They are commonly found in gearboxes, pumps, electric motors, compressors, and machine tools. Their ability to maintain alignment under varying loads contributes to smoother operation and longer service life.
Proper lubrication and sealing are essential for optimal performance. Grease or oil lubrication reduces friction and heat, while seals or shields help protect against contaminants such as dust and moisture.
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Specification
Model Number: 30214 30310 30207 30306 30304 30204
Size: Customized Size
Precision Rating: P0 P1 P2 P3 P4 P5
Number Of Rows: Single Row
Seals Type: ZZ RS OPEN
Material: Bearing Steel
Feature: High Precision, High Speed, Low Noise