SKF
Single Row Angular Contact Ball Bearings
Single row angular contact ball bearings are designed to carry radial loads and unidirectional axial loads. SKF’s product line includes bearings with contact angles of 25°, 30°, and 40°, as well as AC bearings (25°) for general industrial use. They are typically installed in pairs or in combination with another bearing that supports a second axial direction. Common arrangements include back-to-back (DB), face-to-face (DF), and tandem (DT), each offering different stiffness and misalignment characteristics. These bearings provide high running accuracy and are suitable for high-speed applications, such as in pumps, compressors, electric motors, and gearboxes. SKF offers both standard precision and super-precision (P5, P4) versions, as well as sealed variants that simplify maintenance. Universal matching ensures bearings can be paired directly from stock without shimming.
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Load Direction Specialization
Designed for combined radial and single-direction axial loads.
Universal Matching Option
SKF standard production allows random assembly of two bearings to form a set.
Preloaded Arrangements Possible
Achieve zero or controlled preload for extra stiffness.
High-Speed Fitness
Optimized raceway curvature and precision balls reduce friction and temperature.
Sealed Versions
Low-friction contact seals (2RS) retain grease and exclude contaminants.
Multiple Contact Angles
40° for high thrust, 25° or 30° for high-speed balance.
How to Mount Single Row Angular Contact Bearings in Pairs
When mounted back-to-back, the load lines diverge, providing high rigidity against tilting moments — ideal for spindle bearing arrangements. Face-to-face mounting allows more misalignment compensation. The chosen arrangement must be specified correctly because axial load carrying direction depends on orientation. SKF markings indicate matched set configuration.
Applications of Single Row Angular Contact Ball Bearings
In multistage centrifugal pumps, sets of these bearings manage hydraulic thrust. In automotive transmissions, they handle gear separation forces. In electric motors, a pair at the drive end provides a compact, stiff shaft support. Their adaptability makes them a design engineer’s essential tool.