NB040AR0
5/16" Constant Section Bearings
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Part No.
Part No.
NB040AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Endura-kote Plated
Construction
Single Row
Weight
0.3 lbs
Tolerance class
ABEC-1
ISO radial rating
1934 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
4.625"
Outside diameter tolerance
-0.0006"– 0"
Width
0.3125"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.231"
Outer Ring Dimensions
Outer ring large-side face inner diameter
4.46"
Outer ring small-side face inner diameter
4.393"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
865 lbf
Radial static load rating
2040 lbf
Axial static load rating
2100 lbf
Static load moment
5890 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:
$ 122.3
/ each
In Stock
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NB040AR0 Bearing Product Overview & Core Advantages
The NB040AR0 is a single row angular contact ball bearing designed for demanding applications requiring high precision and reliable performance. Manufactured with inch dimensions, this bearing excels at handling combined loads, efficiently supporting significant radial loads and high unidirectional axial loads due to its 30° contact angle. Featuring an Endura-kote chromium plating, it offers superior corrosion resistance. Its ABEC-1 precision class and optimized internal geometry ensure smooth operation, making it an ideal choice for high-rigidity and high-reliability installations where space is constrained.
NB040AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| NB | Manufacturer Prefix |
| 040 | Bore Diameter Code (4 inches) |
| A | Angular Contact design with a 30° contact angle |
| R | Ring material and construction designation |
| 0 | Variant or series identifier |
NB040AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row design with a 30° contact angle provides excellent resistance to combined radial and axial loads, with a static axial load rating of 2100 lbf.
- Precision Engineering: Manufactured to ABEC-1 tolerance class with a tight radial internal clearance of 0.0000 – 0.0005 inches, ensuring smooth, precise operation and minimal vibration.
- Durability & Corrosion Resistance: The Endura-kote chromium plating on the rings provides enhanced protection against corrosion, extending service life in harsh environments.
- Optimized Component Materials: The combination of chrome steel rings, chrome steel balls, and a brass cage ensures high strength, durability, and stable operation at temperatures from -30°C to 110°C.
NB040AR0 Bearing Typical Application Areas
This bearing is engineered for applications requiring high precision and reliability in a compact form factor. Key industries and equipment include:
- Aerospace Actuation Systems
- Precision Medical Equipment
- Robotics and Automation Arms
- High-Performance Machine Tool Spindles
- Optical Positioning Systems
