SKF SPHER ROLLER BEARING 22218 E/C2

Self-aligning roller bearings play a key role in the proper functioning 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 can withstand heavy radial and axial loads in both directions. Thanks to its two rows of self-aligning rollers, this type of bearing is ideal for compensating for misalignment and shaft deflection. It features a stamped steel window cage, an open E-type design, and an internal radial clearance of C2, which is tighter than the standard specification.

Features:
This double-row roller bearing features an open design with a cylindrical bore, allowing for direct mounting on the shaft without the need for additional accessories. It has a reduced internal radial clearance (C2) for enhanced stability at high speeds. Its configuration includes a shoulderless inner ring and a diameter-centered floating guide ring. The internal architecture is optimized for even load distribution and reduced vibration, even in applications subject to high loads. Additionally, the E-type design with windowed cages helps minimize inertia while ensuring excellent rotational stability.

Maintenance:
This self-aligning bearing requires regular relubrication to ensure long-term performance. It is equipped with an annular groove and three lubrication holes on the outer ring, ensuring efficient lubricant distribution and facilitating the removal of contaminants. It is essential to use a lubricant suitable for heavy loads and specific operating temperatures. If contaminants are present or there are signs of premature wear, a thorough cleaning of the housing and external surfaces is recommended before relubrication. The permissible temperature range can reach up to 200 °C, provided that the selected lubricant is compatible with such conditions. Visual inspection is facilitated by the open design, but increased vigilance is still necessary to maintain a clean environment around the mounting location.

Sealing:
This bearing does not have built-in seals, making it susceptible to dusty or humid environments. The lack of protection therefore requires strict cleanliness management during installation and operation. However, this open design has the advantage of reducing internal friction, allowing for higher rotational speeds. It also facilitates visual inspection and maintenance operations.

Brand Information:
SKF (Svenska Kullager-Fabriken) is a Swedish multinational group founded in 1907 and a world leader in the field of mechanical bearings. SKF is one of the world’s leading suppliers of bearings, seals, mechatronic components, lubrication systems, and services designed to improve the reliability of rotating equipment and ensure its performance. SKF products can be used anywhere there is motion. They are used in some 40 industrial sectors, including automotive transportation, aerospace, rail, manufacturing, food and beverage, medical, traditional and renewable energy, and agriculture.

Key Benefits:
- Compensates for misalignment and shaft deflection thanks to its self-aligning geometry;
- Withstands high radial and axial loads in both directions;
- Open design facilitates lubrication and maintenance;
- Deep-drawn steel cage allows for high rotational speeds;
- Reduced internal clearance for enhanced stability and reduced vibration;
- Simple installation thanks to the cylindrical bore.

Applications:
This type of bearing is used in a variety of industrial settings, including textile machinery, transmission systems, material handling equipment such as elevators, and paper manufacturing machinery. It is particularly suitable for applications where misalignment or shaft deflection may occur.