SG042AR0
1" 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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SG042AR0 Bearing Product Overview & Core Advantages
The SG042AR0 is a single row angular contact ball bearing designed for high-performance applications requiring exceptional precision and reliability. This thin section bearing features a stainless steel construction and is engineered to handle significant combined loads, including substantial axial loads in one direction due to its defined 30° contact angle. Its compact design with a 1" width and large 4.25" bore makes it ideal for space-constrained, high-rigidity systems. Manufactured to ABEC-1 precision tolerances, it ensures smooth operation and consistent performance in demanding environments.
SG042AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SG | Indicates the Reali-Slim thin-section bearing series. |
| 042 | Specifies the nominal bore size in inches (4.25"). |
| A | Denotes a 30° contact angle, optimized for handling high axial loads. |
| R0 | Specifies the radial internal clearance group (0.0000 – 0.0005"). |
| Open (Seal Type) | No seals or shields, allowing for higher speeds and custom lubrication schemes. |
SG042AR0 Bearing Structural Features & Performance Benefits
High Load Capacity: The 30° contact angle and robust stainless steel construction enable the bearing to support high radial dynamic load ratings of 6438 lbf and exceptional axial static load ratings of 14,090 lbf, making it suitable for combined load applications.
Precision & Rigidity: Manufactured to ABEC-1 tolerance standards with tight bore and OD tolerances, this bearing provides precise running accuracy and contributes to system stiffness. The brass cage ensures stable ball guidance, enhancing operational smoothness.
Corrosion Resistance & Lightweight: The all-stainless steel (rings and balls) construction offers excellent corrosion resistance, while the thin-section design results in a lower weight (3.83 lbs) without sacrificing strength, ideal for weight-sensitive applications.
Wide Temperature Range: The bearing is lubricated and operates effectively within a temperature range of -30°C to 110°C, ensuring reliability across various operating conditions.
SG042AR0 Bearing Typical Application Areas
The SG042AR0 is ideally suited for applications requiring large bores, high precision, and robust load capacity in a compact envelope. Key industries and equipment include:
- Robotics and Automation: Robot arm joints, rotary actuators, and precision positioning stages.
- Aerospace & Defense: Guidance systems, radar platforms, and satellite mechanisms.
- Medical Equipment: CT scanners, MRI gantries, and surgical robot joints.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- Optical and Instrumentation Systems: Rotary tables and high-accuracy scanning devices.
