SR1-4zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR1-4zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.53 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.07813"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.25"
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
0.03941"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
49 lbf
Radial static load rating
15 lbf
Limiting speed
60.3 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:
$ 2.29
/ each
In Stock
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SR1-4zz Bearing Product Overview & Core Advantages
The SR1-4zz is a precision miniature ball bearing designed for demanding applications requiring high reliability and consistent performance. As a single row deep groove ball bearing, it excels at handling radial loads efficiently. Its compact inch-series design, constructed entirely from stainless steel, offers excellent corrosion resistance. The inclusion of shielded seals (ZZ) protects against contamination, making it a robust and durable choice for high-speed, small-scale mechanisms.
SR1-4zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR1-4 | Specifies the bearing series and size in inches. "SR" denotes a standard single row radial ball bearing, with "1-4" indicating the specific bore and outside diameter dimensions. |
| zz | Indicates the bearing is equipped with non-contact shields on both sides. This provides effective protection against dust and other particulates while minimizing friction, contributing to the high limiting speed. |
SR1-4zz Bearing Structural Features & Performance Benefits
- High-Speed Capability: The optimized deep groove raceway and non-contact stainless steel shields enable a very high limiting speed of 60,300 rpm, making it an ideal high-speed bearing for miniature applications.
- Corrosion Resistance: Manufactured entirely from 300 series stainless steel (rings, balls, cage, and shields), this bearing is suitable for use in harsh environments and offers a wide operating temperature range from -86 to 230 °F.
- Precision & Low Noise: Built to ABEC1 tolerance class with a controlled MC3 radial internal clearance, it ensures smooth, quiet, and precise rotation, which is critical in sensitive instrumentation.
- Robust Design: With a radial dynamic load rating of 49 lbf and a static load rating of 15 lbf, it provides reliable performance for its compact size. The 7-ball complement ensures stable load distribution.
SR1-4zz Bearing Typical Application Areas
This bearing is engineered for precision and reliability in compact spaces. Key applications include:
- Small Precision Motors (e.g., stepper motors, coreless DC motors)
- Medical and Dental Handpieces
- Optical Encoders and Scanners
- Instrumentation and Laboratory Equipment
- High-Speed Small Fans and Blowers
