NB047AR0
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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NB047AR0 Bearing Product Overview & Core Advantages
The NB047AR0 is a single row angular contact ball bearing designed for precision applications requiring high reliability. Featuring inch dimensions and Endura-kote chromium plating, this bearing delivers exceptional corrosion resistance and extended service life. Its optimized 30° contact angle enables superior performance in handling combined radial and axial loads simultaneously, making it ideal for applications demanding high precision and rotational accuracy. The bearing's ABEC-1 precision class ensures consistent performance in demanding operational environments.
NB047AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NB | Manufacturer series designation |
| 047 | Bore diameter specification (4.75") |
| A | Angular contact design with 30° contact angle |
| R0 | Radial internal clearance specification (0.0000 – 0.0005") |
NB047AR0 Bearing Structural Features & Performance Benefits
Precision Engineering: The NB047AR0 features single row construction with optimized raceway geometry and 30° contact angle, providing excellent stability and load distribution. The brass cage ensures smooth operation and reliable ball guidance, while the chrome steel rings and balls deliver exceptional durability and wear resistance.
Load Capacity Performance: With a radial dynamic load rating of 951 lbf and axial static load capacity of 2340 lbf, this bearing effectively handles combined loading conditions. The static load moment rating of 6910 lbf demonstrates its capability to withstand complex loading scenarios in precision applications.
Surface Treatment Advantage: The Endura-kote chromium plating provides superior corrosion protection and enhanced surface hardness, extending bearing life in challenging environments. The coating maintains dimensional stability across the operating temperature range of -30°C to 110°C.
Precision Tolerances: Manufactured to ABEC-1 standards with tight dimensional tolerances (bore: -0.0010"– 0", OD: -0.0008"– 0"), ensuring consistent performance and easy installation in precision assemblies.
NB047AR0 Bearing Typical Application Areas
- Precision machine tools and spindle assemblies
- Industrial robotics and automation equipment
- Aerospace components requiring inch-dimension bearings
- Medical equipment and precision instruments
- Optical positioning systems and rotary tables
- Test and measurement equipment requiring high accuracy
- Semiconductor manufacturing equipment
