Double Row Angular Contact Ball Bearings (General)

What Are Double Row Angular Contact Ball Bearings?

Double row angular contact ball bearings are designed to act as a pair of single row angular contact ball bearings arranged in a back-to-back (DB) configuration. This design allows them to accommodate combined loads—both radial and axial—in both directions, while also providing high rigidity and resistance to tilting moments.

Design and Structure

These bearings consist of two rows of rolling elements placed at an angle to the bearing axis. The integrated double row design eliminates the need for mounting two separate bearings, simplifying installation and saving space. Key components include:

• Inner ring
• Outer ring
• Two rows of steel balls
• Common or split cage

Key Features

• Back-to-back geometry: Built-in configuration similar to DB paired single row bearings.
• Axial load capacity in both directions: Handles axial and radial loads simultaneously.
• High rigidity: Ideal for applications where structural stiffness is essential.
• Space-saving design: Combines two rows into one compact bearing unit.
• Brand interchangeability: Fully compatible with SKF and other international brands.

Typical Applications

Double row angular contact ball bearings are widely used in industrial machinery where precision and load-handling capacity are crucial. Applications include:

• Machine tool spindles
• Electric motors
• Gearboxes
• Pumps and compressors
• Construction machinery

Interchangeability with SKF

These bearings are commonly interchangeable with SKF models. When replacing or designing, ensure that size, contact angle, and internal clearance match the required specifications.

Advantages Over Paired Single Row Bearings

• Lower installation complexity and fewer components
• Reduced axial displacement due to integral design
• Better alignment and stability under load

Conclusion

Double Row Angular Contact Ball Bearings offer an optimal combination of load capacity, stiffness, and compactness. Their ability to replace paired single row bearings simplifies design and reduces assembly time—making them an excellent choice for demanding industrial environments.