Double Row Deep Groove Ball Bearings

A double row deep groove ball bearing provides approximately 60% higher radial load capacity than an equivalent single-row bearing with the same bore and outer diameter. The two-row arrangement also increases shaft support rigidity and handles axial loads in both directions simultaneously. It is a compact alternative to mounting two single-row bearings side by side when space is limited.

Both are double row deep groove ball bearings sharing the same bore diameter range. For a given bore diameter, the 4300 series has a larger outer diameter, a wider cross-section, and accommodates larger balls, resulting in significantly higher radial and axial load ratings. Choose the 4200 series when the OD envelope is limited; choose the 4300 series when maximum load capacity is the priority.

CN (normal) clearance suits most standard applications. Specify C3 when the bearing operates at elevated temperature or is mounted with an interference fit on the shaft; the additional clearance compensates for thermal expansion and fit-induced reduction. C2 is used in precision applications requiring minimal radial play and tight running accuracy. When uncertain, consult our engineering team with your shaft fit and operating temperature data.

Yes. Double row deep groove ball bearings accommodate axial loads in both directions simultaneously with radial loads, similar to their single-row counterparts but with higher capacity due to the increased number of rolling elements. However, the permissible axial-to-radial load ratio is lower than for angular contact ball bearings. For applications with predominantly axial loading, an angular contact or thrust bearing may be more appropriate.

Yes. BOM's custom manufacturing capability covers the full spectrum, from non-standard dimensions, alternative ring and ball materials, and specialized coatings to complete bearing architecture redesign including modified raceway geometry and integrated assemblies. Our engineering team works directly with your design requirements to deliver bearings that meet application-specific performance targets. Contact us with your specifications for a detailed proposal.