Double row angular contact bearings
are designed akin to two single row angular contact
bearings back to back; this means there are two rows of balls encased in the inner and outer rings. This design allows these bearings to handle axial loads in two directions, as well as a combination of axial and radial loading. Double row bearings may function as a pair of single row bearings, but are more space-efficient, and avoid multi-bearing issues such as diameter matching and runout matching. Many variations of double row angular contact bearings are available for design, sealing, material, and improvements. In terms of design, larger contact angles will increase the load capacity of the bearing
, while diminishing speed capabilities and precision. Double row bearings can come sealed, requiring no maintenance and being more cost-effective, or open, with turned recesses in the outer ring allowing for seal and shield customizations. Cage assemblies can be polyamide or sheet steel cages, and regular improvements and variations such as lubricants, preload, and special coatings can impact bearing performance. These bearings are sturdy and capable of handling multiple types of loading, making them great in applications such as agricultural machinery, pumps, elevators, compressors, packaging equipment and conveying equipment.