KB030AR0
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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KB030AR0 Bearing Product Overview & Core Advantages
The KB030AR0 is a high-precision thin section angular contact ball bearing designed for applications demanding exceptional rigidity and accurate positioning. Manufactured to ABEC-1 tolerance standards, this single-row bearing excels in handling combined loads, offering a significant axial static load rating of 1750 lbf alongside its radial capacity. Its compact Reali-Slim cross-section (3" bore x 3.625" O.D. x 0.3125" width) enables space-saving designs without compromising performance, making it ideal for high-reliability, precision machinery.
KB030AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KB | Kilian Brand, Reali-Slim® Series |
| 030 | Bore Diameter: 3.000 inches |
| A | 30° Contact Angle (optimized for combined radial and axial loads) |
| R | Filling Slot (for lubrication) |
| 0 | Open (non-shielded) construction |
KB030AR0 Bearing Structural Features & Performance Benefits
Optimized Contact Angle & High Rigidity: The 30° contact angle is engineered to support substantial axial loads in one direction while simultaneously handling radial loads, providing high system rigidity and precise shaft positioning.
Superior Load Capacity: With a radial dynamic load rating of 734 lbf and a high axial static load rating of 1750 lbf, this bearing is built to withstand demanding combined load conditions.
Precision Engineering: Manufactured from Chrome Steel with a Brass cage, the bearing ensures reliable operation. The tight radial internal clearance (0.0000 – 0.0005") and ABEC-1 precision class guarantee smooth, low-vibration performance.
Lubrication & Temperature Range: The bearing comes lubricated and operates effectively within a temperature range of -30°C to 110°C, suitable for a wide array of industrial environments.
KB030AR0 Bearing Typical Application Areas
- Robotics: Robot arm joints and precision actuators
- Aerospace & Defense: Guidance systems, radar platforms, and gimbal mechanisms
- Medical Equipment: Surgical robots, MRI scanners, and diagnostic imaging devices
- Semiconductor Manufacturing: Wafer handling robots and precision stages
- Industrial Automation: Rotary tables, indexing heads, and CNC rotary axes
