SA120AR0
1/4" 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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SA120AR0 Bearing Product Overview & Core Advantages
The SA120AR0 is a thin section angular contact ball bearing engineered for applications requiring high precision and space optimization. As part of the Reali-Slim Stainless Steel Bearings series, it features a single row design with a 30° contact angle, making it exceptionally suited for handling combined radial and axial loads simultaneously. Its compact cross-section (0.25" width) and stainless steel construction provide excellent corrosion resistance and reliability in demanding environments, while its ABEC-1 precision ensures consistent performance in high-accuracy applications.
SA120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SA | Stainless Steel Angular Contact Bearing |
| 120 | Bore Diameter: 12.0 inches |
| A | 30° Contact Angle |
| R0 | Radial Internal Clearance: 0.0000 – 0.0005" |
SA120AR0 Bearing Structural Features & Performance Benefits
Thin Section Design: With a minimal cross-section of only 0.25" width, this bearing enables compact and lightweight machinery designs while maintaining structural integrity.
High Load Capacity: The 30° contact angle and optimized raceway geometry provide superior combined load handling capabilities, with a radial dynamic load rating of 1128 lbf and axial static load rating of 2970 lbf.
Precision Performance: Manufactured to ABEC-1 tolerance standards with tight dimensional control (bore and OD tolerance: -0.0014" to 0"), ensuring smooth operation and minimal runout in precision applications.
Corrosion Resistance: Constructed entirely from stainless steel (rings and balls) with a brass cage, providing excellent resistance to corrosion and compatibility with various operating environments.
Temperature Stability: Suitable for operating temperatures from -30°C to 110°C, maintaining performance across a wide range of industrial conditions.
SA120AR0 Bearing Typical Application Areas
- Robotics and Automation: Rotary joints and precision positioning systems
- Aerospace Components: Guidance systems and actuator mechanisms
- Medical Equipment: Imaging systems and surgical robotics
- Semiconductor Manufacturing: Wafer handling and precision stages
- Optical Instrumentation: Rotary tables and positioning devices
- Defense Systems: Radar and surveillance equipment
