NA042AR0
1/4" 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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NA042AR0 Bearing Product Overview & Core Advantages
The NA042AR0 is a single row angular contact ball bearing engineered for high-precision applications requiring superior performance under combined loads. Manufactured to ABEC-1 precision standards with inch dimensions (4.25" bore × 4.75" OD × 0.25" width), this bearing excels in applications demanding high rigidity and accurate rotational capability. Its optimized 30° contact angle enables it to efficiently handle both radial loads and substantial axial loads in one direction, while the Endura-kote chromium plating provides enhanced corrosion resistance for extended service life in demanding environments.
NA042AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NA | Thin section bearing series designation |
| 042 | Bore diameter code (4.25 inches) |
| A | Angular contact design with 30° contact angle |
| R0 | Open design (no seals), standard radial clearance |
NA042AR0 Bearing Structural Features & Performance Benefits
Premium Material Construction: Manufactured from chrome steel for both rings and balls, combined with a brass cage, this bearing delivers exceptional durability and reliable performance under demanding operating conditions.
Optimized Load Capacity: The angular contact design enables the NA042AR0 to effectively handle combined radial and axial loads simultaneously. With a radial dynamic load rating of 616 lbf and axial static load capacity of 1530 lbf, this bearing provides robust performance in applications requiring substantial load support.
Precision Engineering: Built to ABEC-1 tolerance class with tight dimensional control (bore/OD tolerance: -0.0008" to 0"), this bearing ensures smooth operation and minimal runout. The radial internal clearance of 0.0000-0.0005" provides optimal preload conditions for high-precision applications.
Enhanced Surface Protection: The Endura-kote chromium plating offers superior corrosion resistance, making this bearing suitable for applications where environmental factors could compromise performance.
NA042AR0 Bearing Typical Application Areas
- Aerospace components and control systems
- Robotics and automation equipment requiring precision motion control
- Medical imaging devices and diagnostic equipment
- Semiconductor manufacturing equipment
- Optical positioning systems and precision instruments
- Military and defense systems requiring reliable thin-section bearings
