Double-Row Cylindrical Roller Bearings

What Are Double Row Cylindrical Roller Bearings?

Double Row Cylindrical Roller Bearings consist of two rows of cylindrical rollers arranged in parallel. These bearings are designed to support high radial loads while maintaining excellent stiffness and precision. However, they offer very limited axial load-carrying capability unless specifically engineered for that purpose (e.g., special designs like NNF or NN type).

Key Features and Benefits

High Radial Load Capacity: The dual-row configuration distributes forces evenly, making them suitable for heavy-duty applications.
Superior Rigidity: Enhanced stiffness makes them ideal for use in high-precision equipment.
High Speed Performance: Low friction design supports efficient operation at high rotational speeds.
Extended Service Life: Precision manufacturing and optimized internal geometry reduce wear and improve reliability.

Typical Applications

Gearboxes
Electric motors
Machine tools
Steel mills
Wind turbines

Design Variants

Available in multiple configurations such as NU, NNU, and NN types, each tailored for different operating conditions and shaft arrangements. Some variants allow limited axial displacement, making them suitable for applications with thermal expansion.

Interchangeable With

These bearings are fully interchangeable with equivalent models from leading manufacturers such as SKF, FAG, NSK, and NTN.