SD055AR0
1/2" Stainless Steel 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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SD055AR0 Bearing Product Overview & Core Advantages
The SD055AR0 is a high-performance thin section angular contact ball bearing engineered for applications demanding precision and space optimization. Manufactured from stainless steel with a brass cage, it offers excellent corrosion resistance and durability. Its defining feature is the 30° contact angle, which is optimized to support significant combined loads, handling both radial and axial forces simultaneously. With an ABEC-1 precision class and a compact cross-section, this bearing is ideal for high-accuracy, high-reliability systems where space and weight are critical constraints.
SD055AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| SD | Reali-Slim® Thin Section Bearing Series | Indicates a compact, lightweight bearing design with a thin cross-section. |
| 055 | Bore Diameter (5.5 inches) | Specifies the nominal inner diameter of the bearing. |
| A | 30° Contact Angle | Optimized for handling high axial loads in one direction combined with radial loads. |
| R0 | Radial Internal Clearance (0.0000 – 0.0005") | Specifies a very low internal clearance, suitable for applications requiring high running accuracy and minimal play. |
SD055AR0 Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The angular contact design with a 30° contact angle enables the SD055AR0 to efficiently support substantial combined radial and axial loads. Its high axial static load rating of 5160 lbf makes it exceptionally capable for thrust applications.
Precision & Rigidity: Built to ABEC-1 tolerance class with tight dimensional control on the bore diameter and outside diameter, this bearing ensures precise shaft guidance and system stability. The minimal radial internal clearance further enhances positional accuracy and rigidity.
Corrosion Resistance & Longevity: The use of stainless steel for both rings and balls, combined with a brass cage, provides excellent resistance to corrosion and wear, extending service life in demanding environments.
Space-Saving Design: As part of the Reali-Slim series, this bearing features a thin cross-section (width of 0.5"), allowing for compact and lightweight machinery designs without sacrificing performance.
SD055AR0 Bearing Typical Application Areas
The SD055AR0 is ideally suited for high-precision and compact machinery, including:
- Robotics and Automation: Used in robot arm joints and precision actuators where space, weight, and accurate motion control are critical.
- Aerospace & Defense Systems: Applied in gimbal systems, radar platforms, and control surfaces requiring reliable performance under combined loads.
- Medical Equipment: Suitable for imaging devices (CT/MRI scanners) and surgical robots demanding high cleanliness and corrosion resistance.
- Semiconductor Manufacturing: Used in wafer handling and positioning stages that require ultra-precise movement and minimal particulate generation.
- Precision Industrial Machinery: Ideal for rotary tables, indexing heads, and other equipment where high axial rigidity and compact bearing dimensions are essential.
