KB090AR0
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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KB090AR0 Bearing Product Overview & Core Advantages
The KB090AR0 is a high-performance thin section angular contact ball bearing designed for applications requiring exceptional precision and space optimization. As part of the Reali-Slim® Open series with an inch system of measurement, this single row bearing excels in handling combined radial and axial loads simultaneously, thanks to its defined 30° contact angle. Its compact cross-section (0.3125" width) combined with a large 9" bore makes it ideal for high-rigidity, weight-sensitive systems in robotics, aerospace, and medical equipment, offering a superior strength-to-size ratio.
KB090AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KB090 | Indicates the specific bearing series and size designation within the Reali-Slim® family. |
| A | Signifies the 30° contact angle, optimized for handling significant axial loads in one direction. |
| R0 | Specifies the radial internal clearance group. |
| Open (Construction) | No seals or shields, allowing for custom lubrication schemes and maximum speed capability. |
KB090AR0 Bearing Structural Features & Performance Benefits
Engineered for demanding applications, the KB090AR0's performance stems from its robust construction:
- High Rigidity & Load Capacity: The single row angular contact design with a 30° contact angle provides high axial and radial stiffness, supporting a radial dynamic load rating of 1370 lbf and a static load moment of 12700 lbf.
- Precision Engineering: Manufactured to ABEC-1 tolerance class with tight bore and OD tolerances, ensuring smooth, precise operation and reliable performance in high-precision systems.
- Optimized Material Selection: The use of Chrome Steel for rings and balls, combined with a Brass cage, ensures durability, corrosion resistance, and stable operation at high speeds.
- Space-Saving Design: As a thin section bearing, it offers a large bore diameter relative to its cross-section, maximizing design space in compact assemblies.
KB090AR0 Bearing Typical Application Areas
The KB090AR0 is ideally suited for applications where precision, compactness, and high load capacity are critical:
- Robotic Arms and Joints
- Aerospace Actuation Systems
- Medical and Surgical Equipment
- Precision Rotary Tables
- Optical and Scanning Devices
