Single Row Ball Bearing - R4A
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R4A
Single Row Deep Groove Ball Bearings are widely recognized as the predominant type of rolling bearing, featuring inner and outer ring raceway grooves that form a circular arc with a radius slightly larger than that of the balls.
Brand
NBK
Cage Material
Steel
Bearing Industry Number
R4A
Closure
Customizable
Bore Diameter
1/4" (6.35 mm)
Number of Rows
1
Bore Diameter Tolerance
+0 / -0.007 mm
Maximum Temperature
100°C / 212°F (Customizable)
Outside Diameter
3/4" (19.05 mm)​
Minimum Temperature
-30°C / -22 °F (Customizable)
Outside Diameter Tolerance
+0 / -0.008 mm
Dynamic Radial Load Capacity
2800 N
Outer Ring Width
7/32" (Open) / 9/32" (Capped)
Static Radial Load Capacity
1050 N
Fillet Radius
0.0118"
Maximum Speed
32000/38000 rpm (Grease/Oil)
Ring Material
AISI 52100
Lubricant Material
Grease or Oil
Ball Material
AISI 52100 (Steel) / Si3N4 (Ceramic)
ABEC Rating
3 (Customizable)
Key Features:
- Support for both radial and axial loads.
- Efficient management of radial and axial loads in both directions.
- Demonstrated reliability and versatility, making them prevalent across various applications.
Key Benefits:
- Ideal for noise-sensitive environments.
- Suitable for equipment requiring noise and vibration reduction due to low frictional torque and high rotational speed.
Applications:
- Industrial motors and servomotors
- Stepper motors, electric machinery, and robotics
- Agricultural equipment including tractors and string trimmers
- Textile machines and film rolling mills
- Conveyors and material handling systems
- Powder and particle clutches
- Automotive components and wheel assemblies
- etc.
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