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Double Row Angular Contact Ball Bearings (General)

Super precision angular contact ball bearings are engineered for high-speed, high-accuracy applications such as machine tools, aerospace systems, and robotics.

Bi-Directional Axial Load Capability

The primary advantage of Double Row Angular Contact Ball Bearings is their ability to accommodate axial loads in both directions within a single bearing unit.

Internally, they are typically designed similar to two single row angular contact bearings arranged back-to-back (DB) or face-to-face (DF). This makes them an excellent choice for applications with reversing thrust loads, simplifying designs compared to using two separate single row bearings.

Buy these for robust bidirectional load support.

Compact Design Compared to Paired Singles

Double Row Angular Contact Ball Bearings provide the functionality of a matched pair of single row bearings but within a narrower overall width. This space-saving feature is valuable in applications where axial space is limited.

Opting for a double row unit can lead to more compact machinery, reduced component count, and potentially lower assembly weight compared to installing two individual bearings. Choose compactness without sacrificing performance.

High Rigidity for Operational Stability

The inherent back-to-back (DB) arrangement of the two ball rows in most double row angular contact ball bearings provides high system rigidity.

This stiffness helps minimize shaft deflection under load, which is crucial for maintaining gear mesh accuracy, ensuring precise positioning in machine tools, or reducing vibration.

For applications demanding stability and precision, the rigidity of these bearings is a key purchasing factor.

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FREQUENTLY ASKED QUESTIONS

How does load capacity compare to two single row bearings?

They generally offer bidirectional axial capacity comparable to a matched pair of single row bearings in a compact form. However, radial capacity might be slightly less than two singles, and some designs with filling slots have lower axial capacity. Always check catalog specs.

Can I adjust the preload on double row angular contact ball bearings?

Usually not required. Unlike paired single row bearings where preload is set during mounting, the internal clearance or preload of most Double Row Angular Contact Ball Bearings is set during manufacturing and cannot be adjusted.

Are double row bearings separable?

Generally, no. Double Row Angular Contact Ball Bearings are typically designed as non-separable units, meaning the inner and outer rings cannot be mounted independently like some other types of bearings.