R2-5zz
R Series Miniature Bearings
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Part No.
Part No.
R2-5zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.74 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.125"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.3125"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1406"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
6
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
107 lbf
Radial static load rating
32 lbf
Limiting speed
60 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.00008" to 0.0005"
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.13
/ each
In Stock
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R2-5zz Bearing Product Overview & Core Advantages
The R2-5zz is a precision miniature ball bearing engineered for demanding applications requiring compact size and reliable performance. As a single row deep groove ball bearing with shielded construction, it is primarily designed to accommodate significant radial loads. Its inch-series dimensions and ABEC1 precision make it an ideal component for high-speed mechanisms where space is constrained and consistent operation is critical. The combination of chrome steel rings and stainless steel components ensures durability and resistance to corrosion in various operating environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| R2-5 | Bearing series and size designation (inch series) |
| zz | Double-shielded construction (non-contact shields on both sides) providing effective contaminant protection while maintaining high-speed capability |
R2-5zz Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The deep groove raceway and six precision chrome steel balls enable efficient handling of radial dynamic loads up to 107 lbf and static loads up to 32 lbf.
- High-Speed Performance: With a limiting speed of 60,000 rpm, the bearing features a stainless steel cage that maintains ball alignment and reduces friction at elevated rotational speeds.
- Enhanced Protection:
- 300 Series stainless steel shields protect against contamination while allowing for high rotational speeds
- Standard MC3 radial internal clearance (0.00008" to 0.0005") ensures optimal performance across various temperature ranges
- Precision Engineering: Manufactured to ABEC1 tolerance class with tight dimensional control on bore, outside diameter, and width for consistent performance in precision assemblies.
R2-5zz Bearing Typical Application Areas
- Small precision motors and miniature DC motors
- Medical devices and dental handpieces
- Optical encoders and precision instrumentation
- Office automation equipment including printers and scanners
- Robotics and small mechanical assemblies
- Aerospace components requiring lightweight, high-performance bearings
