NB120AR0
5/16" 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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NB120AR0 Bearing Product Overview & Core Advantages
The NB120AR0 is a single row angular contact ball bearing engineered for precision applications requiring high reliability. Featuring inch dimensions and Endura-kote chromium plating, this bearing delivers exceptional corrosion resistance and durability. Its 30° contact angle is optimized to handle significant combined radial and axial loads simultaneously, while the ABEC-1 precision class ensures consistent performance in demanding industrial environments.
NB120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NB120 | Basic bearing designation with 12" bore diameter |
| A | Angular contact design with 30° contact angle |
| R0 | Open construction (no seals) |
NB120AR0 Bearing Structural Features & Performance Benefits
Premium Material Construction: Manufactured from chrome steel rings and balls with brass cage, providing excellent strength and wear resistance. The chromium plating enhances surface hardness and corrosion protection.
High Load Capacity: With radial dynamic load rating of 1623 lbf and axial static load rating of 4240 lbf, this bearing effectively handles combined loading conditions. The 30° contact angle optimizes axial load carrying capability while maintaining radial performance.
Precision Engineering: The ABEC-1 tolerance class and tight dimensional controls ensure smooth operation and accurate positioning. The radial internal clearance of 0.0000 – 0.0005" provides optimal preload conditions for various applications.
Temperature Compatibility: Operating range of -30°C to 110°C with standard lubrication, suitable for diverse industrial environments.
NB120AR0 Bearing Typical Application Areas
- Precision machinery and industrial equipment requiring inch-dimension bearings
- Rotary tables and indexing mechanisms
- Machine tool spindles with moderate speed requirements
- Material handling equipment and positioning systems
- Aerospace components requiring corrosion-resistant plating
- Medical equipment and instrumentation requiring reliable angular contact performance
