Manufactured by PRS Bearings, the PAF250 is a precision PA Angular Contact Ball Series. You may consider it as an interchangeable alternative and replacement for KAYDON KF250AR0, SILVERTHIN SF250AR0. Key dimensional parameters include a 635 mm bore diameter, a 673.1 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.
PAF250 - PA Angular Contact Ball Series
Technical Specifications
| Direct Interchange | KAYDON KF250AR0, SILVERTHIN SF250AR0 |
|---|---|
| Overview | |
| Basic Model | PAF250 |
| Weight | 4.994 kg |
| Dimensions | |
| Bore Dia (d, mm) | 635 mm |
| Bore Dia (d, in) | 25 in |
| Outer Dia (D, mm) | 673.1 mm |
| Outer Dia (D, in) | 26.5 in |
| Width (B, mm) | 19.05 mm |
| Width (B, in) | 0.75 in |
| Load Ratings | |
| Dynamic Load (Cr) | 42,636 kN |
| Static Load (Cor) | 154,353 kN |
| Dynamic Axial Load (Ca) | 116,099 kN |
| Static Axial Load (Coa) | 445,712 kN |
| Performance | |
| Limit Speed (rpm) | 780 rpm |
PAF250 19.05 mm 673.1 mm 635 mm Frequently Asked Questions about PAF250 PA Angular Contact Ball Series
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes. Through optimized internal geometry and precision honing, PRS Bearings minimizes the rolling friction of the PAF250. This lowers operating temperatures and power consumption, particularly when running near its 780 RPM threshold.
The L10 life of the PRS Bearings PAF250 is calculated based on its 42,636 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, PRS Bearings is a leading OEM partner. We offer bulk B2B pricing for the PAF250, along with custom laser marking, specialized packaging, and technical documentation (MTR/COC) tailored to your company's requirements.
Thanks to its robust 42,636 dynamic load capacity, the PRS Bearings PAF250 is highly sought after in mining, metallurgy, agricultural machinery, and heavy industrial gearboxes where operational reliability is paramount.