NB025AR0

5/16" Constant Section Bearings

NB025AR0 5/16" Constant Section Bearings
NB025AR0 5/16" Constant Section Bearings

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Part No.
Part No. NB025AR0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Endura-kote Plated
Construction Single Row
Weight 0.19 lbs
Tolerance class ABEC-1
ISO radial rating 1650 lbf
Seal type Open
For load direction Angular Contact

Main Dimensions

Bore diameter 2.5"
Bore diameter tolerance -0.0006"– 0"
Outside diameter 3.125"
Outside diameter tolerance -0.0005"– 0"
Width 0.3125"
Width tolerance +.000 –.005"
Contact angle 30 °

Inner Ring Dimensions

Shoulder diameter inner ring 2.731"

Outer Ring Dimensions

Outer ring large-side face inner diameter 2.964"
Outer ring small-side face inner diameter 2.893"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 675 lbf
Radial static load rating 1340 lbf
Axial static load rating 1590 lbf
Static load moment 3860 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: $ 74.82 / each
In Stock

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NB025AR0 Bearing Product Overview & Core Advantages

The NB025AR0 is a precision angular contact ball bearing designed for demanding applications requiring high accuracy and reliable performance. Manufactured to ABEC-1 tolerance class, this bearing excels at handling combined loads, supporting significant radial and axial forces simultaneously due to its specific 30° contact angle. Its Endura-kote chromium plating provides enhanced corrosion resistance, making it suitable for various industrial environments. With a lubricated design and optimized internal geometry, it delivers smooth operation and extended service life in high-performance systems.

NB025AR0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
NB Manufacturer series designation
025 Bore diameter: 2.5 inches
A Angular contact design with 30° contact angle
R Endura-kote chromium plating for corrosion protection
0 Open seal type (no shield or seal)

NB025AR0 Bearing Structural Features & Performance Benefits

This single row angular contact bearing features a robust construction with chrome steel rings and balls combined with a brass cage for optimal performance. The 30° contact angle provides superior axial load capacity while maintaining excellent radial load handling. The precision ABEC-1 tolerances ensure consistent performance and minimal runout in high-speed applications. The Endura-kote chromium plating significantly enhances corrosion resistance, extending service life in challenging environments. With a radial dynamic load rating of 675 lbf and axial static load capacity of 1590 lbf, this bearing delivers reliable performance under substantial combined loading conditions.

NB025AR0 Bearing Typical Application Areas

  • Precision machine tool spindles requiring high accuracy and stiffness
  • Industrial pumps and compressors handling axial and radial loads
  • Medical equipment and instrumentation demanding corrosion resistance
  • Aerospace components requiring reliable performance in harsh conditions
  • Robotics and automation systems needing precise motion control
  • Food processing machinery where corrosion protection is essential
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