Quick answer
Deep groove ball bearings support radial loads and axial loads in both directions. Angular contact ball bearings use an inclined contact line for combined loads; a single-row design normally supports axial load in one direction and may need an opposing bearing.
Define the load
Separate radial and axial loads and note their directions. Avoid selecting a bearing from dimensions alone.
Review the arrangement
For angular contact designs, specify contact angle, arrangement and preload. These details affect stiffness and load distribution.
Verify the specification
Confirm speed, precision, clearance or preload, lubrication and fits against model-specific documentation and engineering requirements.
Further technical reading
Selection depends on the full designation, operating conditions and confirmed manufacturer data. Use this guide to prepare your requirements.