Which bearing type is best suited for heavy axial loads?

• A. Angular Contact Bearings
• B. Deep Groove Ball Bearings
• C. Self-Aligning Ball Bearings
• D. Needle Bearings

Answer: (A)

When a bearing must carry heavy axial (thrust) loads, the design that transfers load through a defined contact angle between the balls and races is key. Angular contact bearings have a contact angle that lets part of the load be carried as thrust in addition to radial force. A larger contact angle increases the axial load capacity, so these bearings are well suited to withstand substantial axial forces, especially in one direction. Using two angular contact bearings in a matched pair (back-to-back or face-to-face) further increases axial capacity, allowing payloads in both directions.

Deep groove ball bearings handle radial loads primarily and only moderate axial loads. Self-aligning ball bearings are excellent for misalignment and radial loads but have lower axial capacity. Needle bearings are designed for high radial loads with limited space and provide minimal axial support.