SR2zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR2zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
1.37 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
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1562"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
109 lbf
Radial static load rating
35 lbf
Limiting speed
50.4 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.00008" to 0.0005"
Materials
Ring material
Stainless Steel
Ball material
Stainless 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:
$ 1.35
/ each
In Stock
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SR2zz Bearing Product Overview & Core Advantages
The SR2zz is a precision miniature ball bearing designed for demanding applications requiring high reliability and consistent performance. As a single row deep groove ball bearing with stainless steel construction, it excels at handling radial loads and offers excellent operational characteristics. Its compact inch dimensions (0.125" bore, 0.375" OD) make it an ideal solution for space-constrained assemblies. The inclusion of shields (zz) protects against contamination, enhancing its service life in various environments. This bearing is engineered for applications where corrosion resistance and ABEC1 precision are paramount.
SR2zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| SR2 | Standard bearing series with specific inch dimensions. | Ensures interchangeability and easy sourcing. |
| zz | Non-contact shields on both sides. | Protects the internal bearing components from dust and debris without significantly increasing friction. |
SR2zz Bearing Structural Features & Performance Benefits
- Robust Construction: Manufactured entirely from stainless steel (rings, balls, cage), this bearing provides excellent corrosion resistance and is suitable for a wide temperature range from -86 to 230 °F.
- Optimized Load Capacity: The deep groove raceway and 7 precision balls enable efficient handling of the radial dynamic load rating of 109 lbf, making it a reliable choice for continuous operation.
- High-Speed Capability: With a limiting speed of 50,400 rpm, it is well-suited for high-speed applications. The stainless steel cage ensures stability and low vibration at these elevated speeds.
- Precision & Clearance: Built to ABEC1 tolerance class with an MC3 radial internal clearance (0.00008" to 0.0005"), it delivers smooth and precise rotation, minimizing runout and vibration.
SR2zz Bearing Typical Application Areas
This bearing is commonly specified in:
- Precision Instruments and laboratory equipment
- Small electric motors and fans
- Medical devices and dental handpieces
- Office automation equipment (e.g., printers, scanners)
- Radio control models and drones
- Various machinery requiring miniature bearings with shielded protection
