NA030ARO
1/4" Constant Section Bearings
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Part No.
Part No.
NA030ARO
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Endura-kote Plated
Construction
Single Row
Weight
0.14 lbs
Tolerance class
ABEC-1
ISO radial rating
1225 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
3"
Bore diameter tolerance
-0.0006"– 0"
Outside diameter
3.5"
Outside diameter tolerance
-0.0006"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
3.186"
Outer Ring Dimensions
Outer ring large-side face inner diameter
3.367"
Outer ring small-side face inner diameter
3.314"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
507 lbf
Radial static load rating
1140 lbf
Axial static load rating
1230 lbf
Static load moment
3290 lbf
Lubrication
Lubricated
Radial internal clearance
0.0000 – 0.0005"
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Coating
Chromium Plating
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 67.23
/ each
In Stock
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NA030ARO Bearing Product Overview & Core Advantages
The NA030ARO is a single row angular contact ball bearing engineered for precision applications requiring high reliability and compact design. Featuring a 30° contact angle, this bearing is optimized to support significant combined loads, handling both radial forces and substantial unidirectional axial loads simultaneously. Its thin-section design with a 0.25" width provides a space-saving solution without compromising performance. Manufactured to ABEC-1 precision tolerances and featuring a durable chromium plating (Endura-kote), it offers excellent corrosion resistance and is pre-lubricated for immediate service, making it ideal for high-precision, moderate-speed rotational systems.
NA030ARO Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NA | Series designation for thin-section angular contact bearings. |
| 030 | Bore diameter code for 3 inches. |
| A | Angular contact design with a 30° contact angle. |
| R | Reinforced or standard internal construction. |
| O | Open seal type (no shield or seal), allowing for custom lubrication schemes or high-speed operation. |
NA030ARO Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row angular contact design with a 30° contact angle provides high rigidity and is specifically engineered to handle combined radial and axial loads efficiently. It offers a radial dynamic load rating of 507 lbf and a substantial axial static load rating of 1230 lbf.
- Precision & Smooth Operation: Manufactured to ABEC-1 tolerance class with a controlled radial internal clearance (0.0000 – 0.0005"), ensuring smooth, precise, and low-vibration operation suitable for precision mechanisms.
- Durability & Corrosion Resistance: The Endura-kote chromium plating on the rings provides superior corrosion protection, extending bearing life in challenging environments. Components are made from chrome steel for the rings and balls, and a brass cage for stability and durability at moderate speeds.
- Wide Temperature Range: The standard lubrication and robust material construction allow for operation within a temperature range of -30°C to 110°C.
NA030ARO Bearing Typical Application Areas
- Aerospace Actuation Systems: Gimbals, flight control surfaces, and rotor assemblies where precision, light weight, and reliability are critical.
- Precision Industrial Machinery: Robotics, rotary tables, indexing heads, and other automation equipment requiring high positional accuracy.
- Medical & Laboratory Equipment: Scanners, centrifuges, and precision instruments that demand smooth motion and corrosion resistance.
- Optical and Instrumentation Systems: Pan-tilt units, mirror mounts, and other fine-adjustment mechanisms.
