SKF SPHER ROLLER BEARING 21308 EW/C3

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 self-aligning roller bearing is designed to withstand high loads in dynamic industrial environments. Thanks to its two rows of rollers and its self-aligning capability, it effectively compensates for shaft misalignment while ensuring optimal load transmission.

Features:
This spherical roller bearing features two stamped steel window cages, a flangeless inner ring, and a floating guide ring centered on the inner ring (for bores ≤ 65 mm). Its design allows for uniform load distribution, while its cylindrical bore ensures direct mounting on a shaft. The C3 radial clearance, which is greater than the standard, offers better tolerance to thermal expansion and limits internal stresses during high-speed operation. The bearing is not pre-lubricated and does not include a built-in relubrication system.

Maintenance:
This open bearing must be lubricated manually at regular intervals. Since it has no lubrication grooves or holes, maintenance must be performed meticulously, especially in environments subject to dust or moisture. Monitoring lubrication levels, as well as noise, vibrations, and temperature, is essential to prevent premature wear.

Sealing:
This model has no built-in seals. Its open design means it is directly exposed to external contaminants. It is therefore essential to protect the bearing by ensuring clean operating conditions and using a suitable lubricant.

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:
• C3 clearance for better thermal tolerance
• Effective self-alignment to compensate for misalignment
• Excellent stability at high speeds
• Simple installation with a cylindrical bore
• Uniform load distribution thanks to the E-design
• Easy access for inspection and maintenance

Applications:
Ideal for standard to moderately severe industrial environments, this double-row roller bearing is perfectly suited for machines such as conveyors, crushers, pumps, fans, and material handling equipment. Its ability to operate at high speeds and under combined loads, combined with good performance under misalignment, makes it suitable for manufacturing, logistics, and the food processing industry.