KD055AR0
1/2" 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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KD055AR0 Bearing Product Overview & Core Advantages
The KD055AR0 is a high-performance thin section angular contact ball bearing designed for applications requiring exceptional precision and space optimization. Engineered as a single row, open-type bearing, it excels in handling significant combined loads—simultaneously managing radial loads and thrust loads in one direction due to its defined 30° contact angle. Its Reali-Slim construction offers a superior cross-section-to-bore ratio, enabling compact and lightweight designs without sacrificing load capacity or performance. Manufactured to ABEC-1 precision tolerances, it is an ideal solution for high-reliability, precision motion systems.
KD055AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Benefit |
|---|---|---|
| KD | Manufacturer Series/Designation | Identifies the bearing family and design platform. |
| 055 | Bore Diameter (5.5") | Specifies the large, precision-ground 5.5-inch inner diameter. |
| A | Angular Contact Design | Indicates the bearing is optimized for combined loads via its 30° contact angle. |
| R0 | Internal Design / Clearance | Denotes specific internal geometry and a standard radial internal clearance. |
KD055AR0 Bearing Structural Features & Performance Benefits
- Reali-Slim® Cross-Section: The bearing features a remarkably thin radial section (0.5" width) relative to its large 5.5" bore. This design minimizes system weight and envelope size while maintaining structural integrity, crucial for robotic arms and aerospace mechanisms.
- High Load Capacity & Rigidity: The 30° contact angle and robust chrome steel construction enable high axial static load capacity (5160 lbf) and radial dynamic load rating (2145 lbf). The single row design provides high rigidity for precise positioning under combined loading conditions.
- Precision & Smooth Operation: The brass cage ensures stable ball guidance, reducing friction and wear, which is essential for smooth, low-noise operation in precision equipment. Manufactured to ABEC-1 tolerances, it guarantees consistent running accuracy.
- Broad Operating Range: With a specified operating temperature range of -30°C to 110°C and being pre-lubricated, the bearing is ready for immediate use in a wide array of industrial environments.
KD055AR0 Bearing Typical Application Areas
The KD055AR0 thin section angular contact ball bearing is engineered for high-performance applications where space, weight, and precision are critical. Its key application fields include:
- Robotics: Rotary joints and actuator assemblies in industrial and collaborative robots.
- Aerospace & Defense: Gimbals, flight control systems, and radar positioning mechanisms.
- Semiconductor Manufacturing: Precision stages, wafer handling robots, and inspection equipment.
- Medical Equipment: Imaging systems (CT/MRI scanners) and surgical robot joints.
- Industrial Automation: Rotary tables, indexing heads, and high-precision gearboxes.
