Manufactured by PRS Bearings, the PRB020 is a precision PR Radial Contact Ball Bearing. You may consider it as an interchangeable alternative and replacement for KAYDON KB020CP0, SILVERTHIN SB020CP0. Key dimensional parameters include a 50.8 mm bore diameter, a 66.75 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.
PRB020 - PR Radial Contact Ball Bearing
Technical Specifications
| Direct Interchange | KAYDON KB020CP0, SILVERTHIN SB020CP0 |
|---|---|
| Overview | |
| Basic Model | PRB020 |
| Weight | 0.073 kg |
| Dimensions | |
| Bore Dia (d, mm) | 50.8 mm |
| Bore Dia (d, in) | 2 in |
| Outer Dia (D, mm) | 66.75 mm |
| Outer Dia (D, in) | 2.625 in |
| Width (B, mm) | 7.938 mm |
| Width (B, in) | 0.3125 in |
| Load Ratings | |
| Dynamic Load (Cr) | 2,567 kN |
| Static Load (Cor) | 4,137 kN |
| Performance | |
| Limit Speed (rpm) | 8,650 rpm |
7.938 mm 66.75 mm 50.8 mm PRB020 Frequently Asked Questions about PRB020 PR Radial Contact Ball Bearing
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, while the standard PRS Bearings PRB020 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.
The PRS Bearings PRB020 features precision-machined corner chamfers designed to facilitate easier mounting. These ISO-standard chamfers ensure that the PR Radial Contact Ball Bearing fits snugly against shaft shoulders, preventing stress concentration at the 50.8 mm bore interface.
Yes. Through optimized internal geometry and precision honing, PRS Bearings minimizes the rolling friction of the PRB020. This lowers operating temperatures and power consumption, particularly when running near its 8,650 RPM threshold.
Engineered for heavy-duty endurance, the PRS Bearings PRB020 offers a dynamic load rating (Cr) of 2,567 and a static load rating (Cor) of 4,137. These ratings reflect PRS Bearings's commitment to using high-fatigue-strength materials for demanding radial and axial force environments.