Spherical roller bearing SKF 21308 EW/W64

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 roller bearing combines mechanical strength, self-aligning capability, and lifetime lubrication, making it ideal for applications subject to heavy loads, misalignment, speed variations, or liquid splashes.

Features:
This self-aligning roller bearing is equipped with two symmetrical rows of rollers that allow for even distribution of both radial and axial loads, even in the event of misalignment (shaft deflection). It features two stamped steel window cages, a shoulderless inner ring, and a floating guide ring, ensuring proper centering and excellent mechanical performance. The standard radial clearance ensures balanced rigidity, while the cylindrical bore facilitates quick and stable installation. Thanks to its low inertia, this bearing is suitable for high rotational speeds while maintaining optimal mechanical strength.

Maintenance:
This bearing requires no periodic lubrication thanks to its integrated Solid Oil lubrication system. This oil-saturated polymer ensures continuous and effective lubrication of the contact surfaces, even in harsh environments. It is lubricated for life and therefore requires no relubrication. However, to ensure its longevity, prolonged exposure to temperatures above 85 °C should be avoided. A clean installation environment is recommended to minimize the risk of contamination by abrasive particles.

Sealing:
This model is open, meaning it has no traditional rubber seals. Instead, Solid Oil technology fills nearly the entire internal volume, preventing the intrusion of liquid or solid contaminants. This configuration offers enhanced protection against moisture and splashes, while maintaining low rolling resistance. This system is particularly effective in humid environments or those subject to frequent cleaning (even with high-pressure washing).

Brand Information:
SKF is a global leader in bearing technology, with over 100 years of experience. The Swedish company offers innovative solutions in more than 130 countries, with a presence in the automotive, industrial, and energy sectors. Its mission is to reduce friction, improve durability, and enhance equipment performance while minimizing environmental impact.

Key Benefits:
- Permanent lubrication thanks to Solid Oil technology, with no maintenance required.
- Excellent radial and axial load capacity in both directions.
- Compensates for misalignment and shaft deflection.
- Suitable for high rotational speeds thanks to its lightweight design.
- Reliable operation in humid or contaminated environments.

Applications:
This bearing is suitable for industrial transmissions, textile industry equipment, food processing production lines, as well as marine and paper mill installations. It is particularly recommended for machines operating in environments subject to moisture, splashes, or frequent cleaning. Its self-aligning capability and long-lasting lubrication make it an ideal solution for hard-to-reach installations or those subject to high mechanical loads.