Manufactured by PRS Bearings, the PRB055 is a precision PR Radial Contact Ball Bearing. You may consider it as an interchangeable alternative and replacement for KAYDON KB055CP0, SILVERTHIN SB055CP0. Key dimensional parameters include a 139.7 mm bore diameter, a 155.575 mm outer diameter, and a 7.938 mm overall width. With matching boundary dimensions, this component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
PRB055 - PR Radial Contact Ball Bearing
Technical Specifications
| Direct Interchange | KAYDON KB055CP0, SILVERTHIN SB055CP0 |
|---|---|
| Overview | |
| Basic Model | PRB055 |
| Weight | 0.186 kg |
| Dimensions | |
| Bore Dia (d, mm) | 139.7 mm |
| Bore Dia (d, in) | 5.5 in |
| Outer Dia (D, mm) | 155.575 mm |
| Outer Dia (D, in) | 6.125 in |
| Width (B, mm) | 7.938 mm |
| Width (B, in) | 0.3125 in |
| Load Ratings | |
| Dynamic Load (Cr) | 4,377 kN |
| Static Load (Cor) | 10,498 kN |
| Performance | |
| Limit Speed (rpm) | 3,440 rpm |
7.938 mm 155.575 mm 139.7 mm PRB055 Frequently Asked Questions about PRB055 PR Radial Contact Ball Bearing
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The PRB055 utilizes high-purity bearing steel treated with PRS Bearings's advanced thermal processes. This creates a tough core that effectively absorbs shock loads while maintaining a highly wear-resistant surface on the raceways.
The L10 life of the PRS Bearings PRB055 is calculated based on its 4,377 dynamic capacity and your specific application loads. By maintaining clean operating conditions and using PRS Bearings's recommended lubrication, users can expect significantly extended service intervals.
Yes, while the standard PRS Bearings PRB055 meets ISO P0 (ABEC-1) levels, PRS Bearings also manufactures high-precision variants in P6 (ABEC-3) and P5 (ABEC-5) for applications requiring minimal runout and extreme rotational accuracy.
Yes, beyond standard ISO specifications, PRS Bearings can produce the PRB055 with tailored radial internal clearances and ultra-precision accuracy classes to meet the strict demands of specialized OEM applications.