KB047AR0
5/16" Constant Section Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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KB047AR0 Bearing Product Overview & Core Advantages
The KB047AR0 is a thin-section angular contact ball bearing designed for applications requiring high precision and compact design. Manufactured to ABEC-1 tolerance standards, this single-row bearing excels at handling combined loads, supporting significant radial and axial forces simultaneously due to its 30° contact angle. Its inch-dimension design (4.75" bore) provides optimal space-saving solutions while maintaining robust load capacity and reliable performance in demanding industrial environments.
KB047AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
| KB | Kaydon® Reali-Slim bearing series |
| 047 | Bore diameter: 4.75 inches |
| A | 30° contact angle design |
| R | Radial internal clearance specification |
| 0 | Open design (no seals) |
KB047AR0 Bearing Structural Features & Performance Benefits
Thin-Section Design: With a cross-section of only 0.3125", this bearing provides maximum space utilization while maintaining structural integrity. The optimized bearing dimensions (4.75" bore × 5.375" OD) deliver exceptional performance in compact assemblies.
High Load Capacity: The 30° contact angle enables superior combined load handling, with a radial dynamic load rating of 951 lbf and axial static load capacity of 2340 lbf. The brass cage ensures stable operation under varying load conditions.
Precision Engineering: Manufactured to ABEC-1 tolerance class with tight dimensional control (bore tolerance: -0.0010"–0"), this bearing delivers consistent performance in precision applications. The radial internal clearance of 0.0000–0.0005" ensures optimal preload conditions.
Material Excellence: Constructed from chrome steel for both rings and balls, with a brass cage for enhanced durability and smooth operation across the temperature range of -30°C to 110°C.
KB047AR0 Bearing Typical Application Areas
- Robotics and Automation: Rotary joints, robotic arms, and precision positioning systems
- Aerospace Equipment: Guidance systems, radar platforms, and satellite mechanisms
- Medical Devices: CT scanners, MRI equipment, and surgical robotics
- Industrial Machinery: Rotary tables, indexing heads, and precision spindles
- Optical Systems: Telescope mounts, laser positioning equipment, and precision instrumentation
