Advantages: Good self-aligning performance: Due to the spherical design of the outer ring raceway, the self-aligning roller bearing has a strong self-aligning ability. It can automatically compensate for the axis misalignment caused by shaft deflection, installation errors, etc., enabling the bearing to maintain a normal working state to a certain extent and prolonging the service life of the bearing. High load-carrying capacity: The structure of the self-aligning roller bearing enables it to bear large radial loads and also a certain amount of bidirectional axial loads. The design of the double row of rolling elements increases the contact area with the raceway, thereby improving the load-carrying capacity of the bearing. It is suitable for heavy-load working conditions, such as in mining machinery and metallurgical equipment. Adaptability to harsh working conditions: This type of bearing has strong adaptability to the working environment. In some occasions with large vibrations and harsh working conditions, such as in cement machinery and construction machinery, it can still maintain good working performance. Long service life: Reasonable structural design and good manufacturing processes enable the self-aligning roller bearing to have a long service life under normal working conditions, reducing the maintenance and replacement costs of the equipment.
| Bearing Model |
Bore Diameter (d) [mm] |
Outer Diameter (D) [mm] |
Width (B) [mm] |
Weight [kg] |
| 22313HK |
65 |
140 |
48 |
3.80 |
| 22313CDK |
65 |
140 |
48 |
3.80 |
| 22214HK |
70 |
125 |
31 |
2.20 |
| 22214CDK |
70 |
125 |
31 |
2.20 |
| 21314CDK |
70 |
150 |
51 |
4.50 |
Introduction of Spherical Roller Bearings
Spherical Roller Bearings are a type of rolling bearing with an automatic self-aligning function. It can withstand a large radial load while also being able to bear a certain axial load. The characteristic of this bearing is that its rollers are in a drum shape (spherical shape), and the outer raceway is spherical. Therefore, it has the function of automatic self-aligning, which can compensate for misalignment problems caused by installation errors or shaft deflection.
Main features:
- Automatic self-aligning ability: Due to the spherical design of the inner and outer raceways, even if the shaft has a slight bend or there is a deviation in the installation, the bearing can still work normally.
- High load-carrying capacity: Spherical Roller Bearings can withstand large radial and axial loads, and are suitable for heavy-duty working conditions.
- Stable operation: Even under high-speed operating conditions, it can maintain good performance.
- Various design forms: Common designs include symmetrical rollers, asymmetrical rollers, and sealed types, etc., to meet different application requirements.
Application fields:
Spherical Roller Bearings are widely used in industrial equipment and machinery, such as:
- Paper-making machinery
- Speed reducers
- Wind turbines
- Mining machinery
- Metallurgical equipment
- Conveyor equipment
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Spherical roller bearings are a kind of rolling bearings with excellent performance and wide applications. The following mainly introduces their content from aspects such as structure, characteristics, and applications:
Structure
- Inner ring: It closely cooperates with the shaft. There are two raceways on the inner ring. The shape and size of the raceways are designed to have a good contact with the rolling elements (spherical rollers), ensuring the effective transmission of loads and guiding the movement of the rolling elements. The inner diameter of the inner ring is determined according to the diameter of the shaft it cooperates with to achieve reliable installation and operation.
- Outer ring: Usually installed in the hole of the bearing seat or other supporting components, the raceway of the outer ring is spherical. This is a key structural feature that enables the spherical roller bearing to achieve the self-aligning function. The spherical raceway allows the inner ring and the rolling elements to tilt relative to the outer ring within a certain range, thus compensating for the influence caused by the deflection deformation of the shaft or installation errors.
- Rolling elements: Generally, they are symmetrical double-row spherical rollers. The shape of the rollers is specially designed, usually drum-shaped or similar, to adapt to the spherical raceway of the outer ring and the double raceways of the inner ring. The rolling elements roll between the raceways of the inner and outer rings, bearing and transmitting radial and axial loads.
- Cage: Its function is to evenly separate the two rows of rolling elements to prevent collisions and friction between the rollers. At the same time, it guides the rolling elements to roll correctly in the raceways, ensuring the smooth operation of the bearing. Common materials of the cage include metals (such as stamped steel, solid copper alloy, etc.) and non-metals (such as plastics, etc.). There are also various structural forms, such as wave-shaped cages and window-type cages.
Characteristics
- Advantages
- Good self-aligning performance: Due to the spherical design of the outer ring raceway, spherical roller bearings have a strong self-aligning ability. They can automatically compensate for the axis deflection caused by the deflection deformation of the shaft, installation errors, etc., enabling the bearings to maintain a normal working state to a certain extent and prolonging the service life of the bearings.
- High load-carrying capacity: The structure of spherical roller bearings enables them to bear large radial loads and also a certain amount of bidirectional axial loads. The design of double-row rolling elements increases the contact area with the raceways, thus improving the load-carrying capacity of the bearings. They are suitable for heavy-load working conditions, such as in mining machinery and metallurgical equipment.
- Adaptability to harsh working conditions: These bearings have strong adaptability to the working environment. In some occasions with large vibrations and harsh working conditions, such as in cement machinery and construction machinery, they can still maintain good working performance.
- Long service life: With a reasonable structural design and good manufacturing processes, spherical roller bearings have a relatively long service life under normal working conditions, reducing the maintenance and replacement costs of the equipment.
Applications
- Industrial field: In mining machinery, for example, in the transmission parts of equipment such as crushers and ball mills, spherical roller bearings are used to support the heavy-load rotating shafts, bearing huge radial and axial loads and ensuring the stable operation of the equipment. In metallurgical equipment, such as the working rolls and backup roll bearings of rolling mills, spherical roller bearings can adapt to the complex loads and shaft deformations generated during the rolling process.
- Power industry: In wind turbines, spherical roller bearings are often used in parts such as the main bearings and gearboxes, bearing the huge loads and vibrations brought by the wind, and at the same time adapting to the slight deflection of the wind turbine shaft. In some large-scale equipment of thermal power plants, such as coal pulverizers and coal feeders, spherical roller bearings are also widely used.
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