Manufactured by PRS Bearings, the PRA055 is a precision PR Radial Contact Ball Bearing. You may consider it as an interchangeable alternative and replacement for KAYDON KA055CP0, SILVERTHIN SA055CP0. Key dimensional parameters include a 139.7 mm bore diameter, a 152.4 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.
PRA055 - PR Radial Contact Ball Bearing
Technical Specifications
| Direct Interchange | KAYDON KA055CP0, SILVERTHIN SA055CP0 |
|---|---|
| Overview | |
| Basic Model | PRA055 |
| Weight | 0.113 kg |
| Dimensions | |
| Bore Dia (d, mm) | 139.7 mm |
| Bore Dia (d, in) | 5.5 in |
| Outer Dia (D, mm) | 152.4 mm |
| Outer Dia (D, in) | 6 in |
| Width (B, mm) | 6.35 mm |
| Width (B, in) | 0.25 in |
| Load Ratings | |
| Dynamic Load (Cr) | 3,047 kN |
| Static Load (Cor) | 7,784 kN |
| Performance | |
| Limit Speed (rpm) | 3,480 rpm |
6.35 mm 152.4 mm 139.7 mm PRA055 Frequently Asked Questions about PRA055 PR Radial Contact Ball Bearing
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The PRA055 produced by PRS Bearings adheres to strict ISO standards with a bore diameter of 139.7 mm, an outer diameter of 152.4 mm, and a width of 6.35 mm. PRS Bearings utilizes advanced grinding technology to ensure a radial section wall thickness of 6.4 mm and a balanced D/d ratio of 1.09 for high-precision housing fits.
The PRS Bearings PRA055 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 139.7 mm bore interface.
Under optimal lubrication conditions, the PRS Bearings PRA055 can reach a limiting speed of 3,480 RPM. The low-friction raceway finish developed by PRS Bearings allows for cooler running temperatures even at high velocities.
Yes, PRS Bearings strictly adheres to global environmental directives. The bearing steel and industrial lubricants used in the PRA055 are formulated to meet international safety standards, ensuring eco-friendly equipment integration.