Manufactured by PRS Bearings, the PRF055 is a precision PR Radial Contact Ball Bearing. You may consider it as an interchangeable alternative and replacement for KAYDON KF055CP0, SILVERTHIN SF055CP0. Key dimensional parameters include a 139.7 mm bore diameter, a 177.8 mm outer diameter, and a 19.05 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.
PRF055 - PR Radial Contact Ball Bearing
Technical Specifications
| Direct Interchange | KAYDON KF055CP0, SILVERTHIN SF055CP0 |
|---|---|
| Overview | |
| Basic Model | PRF055 |
| Weight | 1.134 kg |
| Dimensions | |
| Bore Dia (d, mm) | 139.7 mm |
| Bore Dia (d, in) | 5.5 in |
| Outer Dia (D, mm) | 177.8 mm |
| Outer Dia (D, in) | 7 in |
| Width (B, mm) | 19.05 mm |
| Width (B, in) | 0.75 in |
| Load Ratings | |
| Dynamic Load (Cr) | 18,309 kN |
| Static Load (Cor) | 31,360 kN |
| Performance | |
| Limit Speed (rpm) | 3,200 rpm |
19.05 mm 177.8 mm 139.7 mm PRF055 Frequently Asked Questions about PRF055 PR Radial Contact Ball Bearing
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Depending on your thermal and fit requirements, PRS Bearings supplies the PRF055 in C0 (Normal), C2 (Tight), or C3 (Loose) internal radial clearances. Proper clearance selection by PRS Bearings specialists helps prevent premature bearing seizure.
To maximize the performance of the PRF055, PRS Bearings technical engineers suggest a shaft fit of k5/m5 for its 139.7 mm bore. For the 177.8 mm outer diameter, an H7 or J7 housing tolerance is ideal to accommodate thermal expansion while maintaining PRS Bearings's signature operational stability.
Yes, PRS Bearings is a leading OEM partner. We offer bulk B2B pricing for the PRF055, along with custom laser marking, specialized packaging, and technical documentation (MTR/COC) tailored to your company's requirements.
Engineered for heavy-duty endurance, the PRS Bearings PRF055 offers a dynamic load rating (Cr) of 18,309 and a static load rating (Cor) of 31,360. These ratings reflect PRS Bearings's commitment to using high-fatigue-strength materials for demanding radial and axial force environments.