NA045AR0
1/4" Constant Section Bearings
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Part No.
Part No.
NA045AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Endura-kote Plated
Construction
Single Row
Weight
0.21 lbs
Tolerance class
ABEC-1
ISO radial rating
1410 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4.5"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
5"
Outside diameter tolerance
-0.0008"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.686"
Outer Ring Dimensions
Outer ring large-side face inner diameter
4.865"
Outer ring small-side face inner diameter
4.814"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
637 lbf
Radial static load rating
1660 lbf
Axial static load rating
1580 lbf
Static load moment
4810 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:
$ 136.24
/ each
In Stock
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NA045AR0 Bearing Product Overview & Core Advantages
The NA045AR0 is a high-precision, inch-series angular contact ball bearing engineered for applications demanding exceptional accuracy and reliable performance under combined loads. Featuring a single row design with a 30° contact angle, it is optimized to support significant axial loads in one direction alongside radial loads. Its thin-section construction and Endura-kote chromium plating provide superior corrosion resistance and durability in demanding environments, making it an ideal choice for high-rigidity and precision positioning systems.
NA045AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NA | Designates the bearing series and type. |
| 045 | Indicates a bore diameter of 4.5 inches. |
| A | Signifies a 30° contact angle, optimized for high axial load capacity. |
| R0 | Specifies the radial internal clearance group (0.0000 – 0.0005"). |
NA045AR0 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 substantial combined loads, including high one-direction axial loads (Axial Static Load Rating: 1580 lbf) and radial loads (Radial Static Load Rating: 1660 lbf).
- Precision & Accuracy: Manufactured to ABEC-1 tolerance class with tight dimensional tolerances on the bore and outside diameter, ensuring precise shaft running and system accuracy.
- Durability & Corrosion Resistance: The Endura-kote chromium plating on the rings offers excellent protection against corrosion, significantly extending bearing service life in harsh operating conditions. The brass cage ensures stable operation and guides the balls effectively.
- Optimized for Performance: The pre-lubricated design and specified radial internal clearance are calibrated for optimal performance within the operating temperature range of -30°C to 110°C.
NA045AR0 Bearing Typical Application Areas
This bearing is ideally suited for precision machinery and applications requiring a compact, high-performance solution. Key sectors include:
- Aerospace Actuation Systems (e.g., flight control surfaces)
- Precision Medical Equipment (e.g., surgical robots, imaging devices)
- Industrial Robotics (e.g., robot arm joints, precision gears)
- High-End Semiconductor Manufacturing Equipment
- Radar and Precision Positioning Systems
