SRW3zz
SRW Series Stainless Steel Extended Inner Ring Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SRW3zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.95 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
0.5"
Outside diameter tolerance
-0.0003" to 0"
Width
0.196"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Extended
Inner ring width
0.2273"
Shoulder diameter inner ring
0.276"
Ball & Washer Dimensions
Ball diameter
0.0937"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
224 lbf
Radial static load rating
79 lbf
Limiting speed
38.7 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:
$ 3.47
/ each
In Stock
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SRW3zz Bearing Product Overview & Core Advantages
The SRW3zz is a single row deep groove ball bearing designed for precision radial load applications. Manufactured entirely from stainless steel components, it offers excellent corrosion resistance and reliable performance. Its compact inch-series dimensions (0.1875" bore) make it ideal for space-constrained assemblies requiring ABEC1 precision and consistent operation within a wide temperature range of -86 to 230 °F. The integrated stainless steel shields (zz) protect against contamination, extending service life in demanding environments.
SRW3zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| zz | Non-contact, non-rubbing stainless steel shields on both sides | Provides effective protection against dust and debris while minimizing friction and torque, contributing to the high limiting speed. |
| Extended Inner Ring | The inner ring width (0.2273") is greater than the total bearing width (0.196") | Facilitates easier mounting and secure axial location, often eliminating the need for additional components. |
SRW3zz Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry & High-Grade Materials: The deep groove raceway and seven precision stainless steel balls ensure smooth, quiet operation and efficient radial load carrying capacity, with a dynamic load rating of 224 lbf.
- Corrosion Resistance & Longevity: All critical components, including the stainless steel cage and shields, are made from 300 series stainless steel, making the bearing suitable for humid, washdown, and chemically aggressive environments.
- Precision & Stability: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.00008" to 0.0005"), this bearing provides predictable running accuracy and reduced vibration.
- High-Speed Capability: The combination of a low-friction stainless steel cage, non-contact shields, and optimized internal design allows for a high limiting speed of 38,700 rpm.
SRW3zz Bearing Typical Application Areas
This bearing is commonly specified in applications requiring compact size, corrosion resistance, and reliable performance, such as:
- Medical and Dental Handpieces
- Small Precision Motors and Encoders
- Food Processing and Packaging Equipment
- Laboratory and Analytical Instruments
- Office Automation Equipment
