ND040AR0
1/2" 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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Product Overview and Core Advantages
The ND040AR0 is a single row angular contact ball bearing engineered for precision applications requiring high reliability. Featuring inch dimensions (4" bore × 5" OD × 0.5" width), this bearing excels in handling combined radial and axial loads simultaneously due to its 30° contact angle design. The Endura-kote chromium plating provides superior corrosion resistance, while its ABEC-1 precision classification ensures consistent performance in demanding industrial environments. Its compact cross-section makes it ideal for space-constrained applications where high load capacity and precision motion control are critical.
ND040AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| ND040 | Bearing series designation with 4" bore diameter |
| A | Angular contact design with 30° contact angle |
| R0 | Standard radial internal clearance (0.0000 – 0.0005") |
Structural Features and Performance Benefits
Optimized Load Distribution: The 30° contact angle enables efficient handling of combined loads, with axial static load capacity reaching 4260 lbf and radial dynamic load rating of 1819 lbf.
Precision Engineering: Manufactured to ABEC-1 tolerance standards with tight dimensional control (bore tolerance: -0.0008"–0"), ensuring smooth operation and minimal vibration.
Enhanced Durability: Chrome steel rings and balls combined with brass cage provide excellent wear resistance and dimensional stability across the operating temperature range (-30°C to 110°C).
Corrosion Protection: Endura-kote chromium plating offers superior surface protection, extending service life in harsh environments while maintaining ROHS compliance.
ND040AR0 Bearing Typical Application Areas
- Precision industrial machinery requiring accurate angular positioning
- Robotic articulation systems and automation equipment
- Aerospace components and defense systems
- Medical equipment and diagnostic instruments
- High-performance pumps and compressor systems
- Optical positioning systems and precision instruments
