Manufactured by PRS Bearings, the PRA047 is a precision PR Radial Contact Ball Bearing. You may consider it as an interchangeable alternative and replacement for KAYDON KA047CP0, SILVERTHIN SA047CP0. Key dimensional parameters include a 120.65 mm bore diameter, a 133.35 mm outer diameter, and a 6.35 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.
PRA047 - PR Radial Contact Ball Bearing
Technical Specifications
| Direct Interchange | KAYDON KA047CP0, SILVERTHIN SA047CP0 |
|---|---|
| Overview | |
| Basic Model | PRA047 |
| Weight | 0.104 kg |
| Dimensions | |
| Bore Dia (d, mm) | 120.65 mm |
| Bore Dia (d, in) | 4.75 in |
| Outer Dia (D, mm) | 133.35 mm |
| Outer Dia (D, in) | 5.25 in |
| Width (B, mm) | 6.35 mm |
| Width (B, in) | 0.25 in |
| Load Ratings | |
| Dynamic Load (Cr) | 2,798 kN |
| Static Load (Cor) | 6,761 kN |
| Performance | |
| Limit Speed (rpm) | 4,000 rpm |
6.35 mm 133.35 mm 120.65 mm PRA047 Frequently Asked Questions about PRA047 PR Radial Contact Ball Bearing
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Under optimal lubrication conditions, the PRS Bearings PRA047 can reach a limiting speed of 4,000 RPM. The low-friction raceway finish developed by PRS Bearings allows for cooler running temperatures even at high velocities.
To maximize the performance of the PRA047, PRS Bearings technical engineers suggest a shaft fit of k5/m5 for its 120.65 mm bore. For the 133.35 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 PRA047, along with custom laser marking, specialized packaging, and technical documentation (MTR/COC) tailored to your company's requirements.
Yes, while the standard PRS Bearings PRA047 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.