SR166zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR166zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.85 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.1875"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.125"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
8
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
122 lbf
Radial static load rating
44 lbf
Limiting speed
45 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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SR166zz Bearing Product Overview & Core Advantages
The SR166zz is a precision miniature ball bearing designed for applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing, it excels at handling radial loads while also accommodating moderate axial loads in both directions. Manufactured entirely from stainless steel, including its rings, balls, and cage, it offers excellent corrosion resistance. The inclusion of shielded (non-contact) seals on both sides protects the bearing's interior from contamination. With an ABEC1 precision class and a compact design, it is an ideal choice for high-speed, space-constrained applications demanding long service life and consistent operation.
SR166zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR | Indicates a bearing with a standard radial internal clearance. |
| 166 | The specific bearing size designation in the manufacturer's numbering system. |
| zz | Denotes that the bearing is equipped with shielded seals on both sides. These non-contact metal shields help retain lubrication and protect against large particulate contaminants without significantly increasing friction. |
SR166zz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of 0.1875" and a weight of only 0.85 g, this bearing is engineered for miniature assemblies and applications where space and weight are critical factors.
- Corrosion Resistance: The use of stainless steel for all critical components ensures reliable performance in humid or mildly corrosive environments, extending the bearing's operational lifespan.
- High-Speed Capability: The stainless steel cage and optimized internal geometry contribute to a high limiting speed of 45,000 rpm, making it suitable for demanding high-rotation applications.
- Precision Performance: Manufactured to ABEC1 tolerance class, this bearing provides consistent running accuracy and low vibration, which is essential for smooth operation in precision instruments.
- Effective Contamination Protection: The zz shields offer a first line of defense against dust and debris, helping to maintain internal cleanliness and lubrication integrity.
SR166zz Bearing Typical Application Areas
This bearing is widely used in compact, high-speed devices across various industries. Key applications include:
- Small Precision Motors: Such as those found in drones, RC models, and small fans.
- Medical and Dental Handpieces: Where high speed, reliability, and corrosion resistance are paramount.
- Office Automation Equipment: Including printers, scanners, and small copiers.
- Instrumentation and Measurement Devices: For precise rotary motion in gauges and sensors.
- Textile Machinery: In high-speed spindles and guides.
