SKF SPHER ROLLER BEARING 21320 E

Spherical roller bearings play a key role in the proper operation of equipment subjected to high mechanical loads. Their robust design ensures reliable and continuous performance, even under unstable or demanding operating conditions.

This SKF spherical roller bearing is designed to automatically compensate for misalignment and shaft deflection. It can also simultaneously absorb heavy radial and axial loads in both directions. This model features two stamped steel window cages, a shoulderless inner ring, and a floating guide ring centered on the inner ring or on the cages.

Features:
This self-aligning bearing incorporates two symmetrical rows of rollers, housed in stamped steel cages. This design reduces inertia, allowing for high rotational speeds without compromising strength. Its cylindrical bore allows for simple and direct mounting on the shaft, while its open, seal-free configuration facilitates visual inspections and minimizes friction. It is also equipped with an annular groove and three holes on the outer ring for effective relubrication. The E design of this model features a floating guide ring, which improves load distribution and service life. This type of double-row roller bearing is ideally suited for dynamic applications requiring robustness and high performance.

Maintenance:
To maintain its performance over time, this bearing requires regular relubrication via the devices integrated into the outer ring. A lubricant suitable for the operating conditions must be used, particularly in cases of high temperatures reaching up to 200 °C. It is essential to thoroughly clean the housing before each service, especially if contaminants or signs of wear are detected. Preventive maintenance, combined with periodic monitoring of operating conditions, ensures the product’s reliability.

Sealing:
This model is of the open type, meaning it has no built-in seals. This has the advantage of reducing rolling resistance and optimizing efficiency, but makes the bearing more susceptible to the ingress of dust, moisture, or solid particles. It is therefore advisable to ensure effective peripheral protection and to keep the mounting areas clean. However, the open design allows for easier maintenance and better heat dissipation under certain operating conditions.

Brand Information:
SKF, founded in 1907, is a major player in the field of solutions for rotating equipment. Specializing in bearings, seals, and lubrication systems, the Swedish brand is recognized for its technical expertise and innovations that meet the diverse needs of industrial sectors such as automotive, aerospace, energy, and food processing.

Key Benefits:
- Effectively compensates for misalignment thanks to its self-aligning design;
- Withstands high radial and axial loads in both directions;
- Compatible with high rotational speeds without excessive heating;
- Relubrication facilitated by a groove and three holes in the outer ring;
- Quick and direct mounting on the shaft thanks to the cylindrical bore;
- Simplified maintenance and easy visual inspection thanks to its open design.

Applications:
This type of spherical roller bearing is commonly used in the cement, steel, paper, and mining industries. It is ideally suited for equipment subjected to combined loads, such as conveyors, crushers, presses, or drive shafts. It is recommended for installations requiring reliable operation in dusty environments or those subject to vibrations or significant speed variations. Its robust design also makes it suitable for industrial maintenance applications and quick replacements.