SKF SPHER ROLLER BEARING 21306 CC/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 double-row spherical roller bearing features self-aligning capability, effectively compensating for misalignment and shaft deflection while withstanding high radial and axial loads. This SKF model is open and equipped with a stamped steel cage, featuring a CC design and increased radial clearance (C3).

Features:
This SKF self-aligning bearing features a robust design with a cylindrical bore for easy direct mounting on the shaft. It is designed without inner shoulders, with a floating guide ring and two stamped steel window cages. This CC configuration, combined with C3 internal radial clearance and the absence of a seal, improves tolerance to thermal expansion and limits internal stresses, making it particularly suitable for high rotational speeds.

Maintenance:
Maintenance of this double-row roller bearing relies on regular and controlled lubrication to prevent premature wear. Since it is not pre-lubricated, it is necessary to select a lubricant suitable for the operating conditions. Signs such as increased temperature, noise, or vibration should serve as warnings that maintenance is needed. Maintenance work must always be performed in a clean environment to minimize any risk of contamination.

Sealing:
This bearing is an open-type bearing with no built-in seals. This design facilitates visual inspection and provides direct access to internal components. However, it remains vulnerable to the ingress of dust, moisture, and other solid particles. It is therefore essential to ensure that the housing and surrounding parts are clean during every service to guarantee the bearing’s service life.

Brand Information:
SKF has been a global leader in the design and manufacture of bearings for over a century. Recognized for its technical expertise, continuous innovation, and commitment to quality, SKF offers a comprehensive range of solutions, from bearings to lubrication systems and related services. With its reliable, high-performance products, SKF supports various industrial sectors, such as the automotive, aerospace, energy, and manufacturing industries, among many others.

Key Benefits:
- Effectively compensates for misalignment and shaft deflection;
- Withstands high radial and axial loads in both directions;
- Suitable for high rotational speeds thanks to its open design;
- C3 clearance for better tolerance to thermal expansion;
- Easy maintenance thanks to direct visual inspection.

Applications:
This spherical roller bearing is ideal for industrial environments with high load and misalignment conditions. It is used in paper production facilities, heavy-duty transmissions, metal rolling mills, material handling equipment, and textile machinery. Its robust design and ability to operate at high temperatures make it a component of choice for heavy-duty applications.