R8ZZ-900
R Series & EE Series Single Row Deep Groove Ball Bearings
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Part No.
Part No.
R8ZZ-900
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
24.1 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.5"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
1.125"
Outside diameter tolerance
-0.0004" to 0"
Width
0.3125"
Width tolerance
-0.005" to 0"
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
1149 lbf
Radial static load rating
511 lbf
Limiting speed
27 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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R8ZZ-900 Bearing Product Overview & Core Advantages
The R8ZZ-900 is a precision single row deep groove ball bearing designed for demanding applications requiring reliable performance. This shielded bearing features inch dimensions with a 0.5" bore and is manufactured to ABEC 1 precision class, ensuring consistent operation and dimensional accuracy. Its primary strength lies in its ability to efficiently handle radial loads with a dynamic load rating of 1149 lbf, making it an ideal component for compact assemblies where space is at a premium and high reliability is essential.
R8ZZ-900 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| R8 | Series designation indicating specific boundary dimensions and load characteristics. |
| ZZ | Signifies the bearing is equipped with shielded seals on both sides. This provides effective protection against contaminant ingress while minimizing friction. |
| 900 | Bore diameter code for a 0.5" bore size. |
R8ZZ-900 Bearing Structural Features & Performance Benefits
- Robust Construction: Manufactured from chrome steel for rings, balls, and cage, providing high strength, durability, and resistance to wear.
- Effective Contamination Protection: The non-contact ZZ shields protect the internal components from dust and debris, enhancing bearing service life without significantly increasing rotational torque.
- Precision Performance: Built to ABEC 1 (ISO P0) tolerance standards with a standard CN radial internal clearance, ensuring smooth and quiet operation suitable for a wide range of industrial applications.
- High-Speed Capability: With a limiting speed of 27,000 rpm, this bearing is engineered for applications requiring high rotational velocities.
- Maintenance-Free Operation: The bearing is supplied without lubrication ("None"), allowing the end-user to apply a specific lubricant suited to their operational environment, or to run dry in certain conditions.
R8ZZ-900 Bearing Typical Application Areas
This bearing is well-suited for a variety of applications, including:
- Small Electric Motors and Gear Motors
- Precision Instruments and Medical Devices
- Office Automation Equipment (e.g., printers, scanners)
- Computer Cooling Fans and Spindles
- Light-duty Industrial Machinery
