ND250AR0
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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ND250AR0 Bearing Product Overview & Core Advantages
The ND250AR0 is a **precision angular contact ball bearing** designed for applications requiring exceptional performance under **combined radial and axial loads**. Featuring a **single row design** with a **30° contact angle**, this bearing delivers high rigidity and accurate rotational precision. Its **Endura-kote chromium plating** provides superior corrosion resistance, while the **ABEC-1 tolerance class** ensures consistent performance in demanding industrial environments. The bearing's optimized geometry enables reliable operation across a wide **temperature range from -30°C to 110°C**.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| ND250 | Bearing series designation with 25" bore diameter | Standardized sizing for interchangeability |
| A | Angular contact design with 30° contact angle | Optimized for combined loading conditions |
| R0 | Standard radial clearance (0.0000 – 0.0005") | Consistent performance across temperature variations |
ND250AR0 Bearing Structural Features & Performance Benefits
Premium Material Construction: The ND250AR0 utilizes **chrome steel rings and balls** with a **brass cage**, providing excellent durability and wear resistance. This material combination ensures stable operation under high dynamic loads while maintaining dimensional stability.
Enhanced Load Capacity: With a **radial dynamic load rating of 4908 lbf** and **axial static load rating of 13540 lbf**, this bearing effectively handles significant **combined loads**. The **30° contact angle** optimally distributes stress across the raceways, extending service life in demanding applications.
Corrosion Protection: The **Endura-kote chromium plating** offers superior surface protection against corrosion and chemical attack, making it suitable for harsh operating environments where moisture or contaminants are present.
Precision Engineering: Manufactured to **ABEC-1 tolerance standards** with tight dimensional controls on bore diameter (25" ±0.0030"), outside diameter (26" ±0.0030"), and width (0.5" +.000/-.010"), ensuring reliable performance in precision applications.
ND250AR0 Bearing Typical Application Areas
- Aerospace Actuation Systems: Flight control mechanisms and landing gear assemblies requiring high reliability
- Industrial Robotics: Joint and articulation points in robotic arms and automation equipment
- Precision Machine Tools: Spindle supports and rotary tables demanding high rigidity
- Medical Equipment: Imaging systems and surgical devices requiring smooth, precise rotation
- Military & Defense Systems: Turret mechanisms and targeting systems needing corrosion-resistant components
- Specialized Machinery: Applications where combined loads and environmental resistance are critical
