KD250AR0
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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KD250AR0 Bearing Product Overview & Core Advantages
The KD250AR0 is a high-performance thin section angular contact ball bearing engineered for applications demanding exceptional precision and space optimization. This single row bearing is specifically designed to handle combined loads, efficiently supporting significant radial loads alongside thrust loads in one direction. Its inch-series dimensions (25" bore, 26" O.D., 0.5" width) and 30° contact angle make it an ideal solution for compact, high-rigidity systems requiring ABEC-1 precision and reliable operation.
KD250AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KD | Kaydon® Reali-Slim® bearing series prefix |
| 250 | Bore diameter code for 25 inches |
| A | Angular contact design with a 30° contact angle |
| R | Reali-Slim® thin section bearing construction |
| 0 | Open (unsealed) design, allowing for custom lubrication schemes |
KD250AR0 Bearing Structural Features & Performance Benefits
This bearing's performance is defined by its specialized construction. The single row angular contact design, combined with a brass cage, ensures stable operation and precise ball guidance. The 30° contact angle is optimized to handle high axial static load ratings (13,540 lbf) in conjunction with substantial radial dynamic load capacity (4,908 lbf). Manufactured from chrome steel for both rings and balls, it offers excellent durability and wear resistance. The open construction provides flexibility for application-specific lubrication, while the ABEC-1 tolerance class and tight radial internal clearance (0.0000 – 0.0005") guarantee consistent, high-precision performance in demanding environments.
KD250AR0 Bearing Typical Application Areas
- Robotics and Automation: Rotary joints, robotic arms, and precision positioning systems
- Aerospace & Defense: Radar platforms, gimbal systems, and satellite mechanisms
- Medical Equipment: CT scanners, MRI machines, and surgical robotics
- Semiconductor Manufacturing: Wafer handling robots and precision stages
- Industrial Machinery: Rotary tables, indexing heads, and precision gearboxes
