NA055AR0
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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NA055AR0 Bearing Product Overview & Core Advantages
The NA055AR0 is a single row angular contact ball bearing designed for high-precision applications requiring exceptional performance under combined loads. Manufactured to ABEC-1 precision standards, this bearing features a unique Endura-kote chromium plating that provides superior corrosion resistance and extended service life. Its optimized 30° contact angle enables it to efficiently support significant radial loads and axial loads in one direction simultaneously, making it ideal for applications demanding high rigidity and precise rotational accuracy.
NA055AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NA055 | Bearing series designation with 5.5" bore diameter |
| A | Angular contact design with 30° contact angle |
| R0 | Radial internal clearance designation (0.0000 – 0.0005") |
NA055AR0 Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to ABEC-1 tolerance standards with chrome steel rings and brass cage for stable operation and reduced vibration.
Superior Load Capacity: The 30° contact angle enables excellent combined load handling with radial dynamic load rating of 715 lbf and axial static load capacity of 1800 lbf.
Enhanced Durability: Endura-kote chromium plating provides exceptional corrosion resistance and surface hardness, extending bearing life in harsh environments.
Precision Engineering: Tight dimensional tolerances (-0.0010"– 0" on bore and OD) ensure consistent performance and easy installation in precision assemblies.
NA055AR0 Bearing Typical Application Areas
- Aerospace components and flight control systems
- Precision medical equipment and surgical devices
- Robotic positioning systems and automation equipment
- Optical instrument positioning mechanisms
- Semiconductor manufacturing equipment
- High-precision spindle applications
