SR3zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR3zz
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
Standard
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:
$ 1.12
/ each
In Stock
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SR3zz Bearing Product Overview & Core Advantages
The SR3zz is a single row deep groove ball bearing designed for precision applications requiring reliable radial load capacity. Manufactured entirely from stainless steel with integral shields, this bearing offers excellent corrosion resistance and durability. Its compact design, featuring a 0.1875" bore and 0.5" outside diameter, makes it ideal for applications where space is limited and high limiting speed (38,700 rpm) is essential. The bearing is supplied with an ABEC1 precision class, ensuring consistent performance for general-purpose precision bearing requirements.
SR3zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR3 | Bearing series, indicating a specific dimension series for inch-sized bearings. |
| zz | Denotes that the bearing is equipped with shields on both sides (non-contact). This provides effective protection against contamination while minimizing friction. |
SR3zz Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and complement of 7 balls enable high-speed operation and efficient radial load support, with a dynamic load rating of 224 lbf.
- Corrosion Resistance: All components, including rings, balls, cage, and shields, are manufactured from stainless steel, making the bearing suitable for harsh environments and washdown applications.
- Contamination Protection: The zz shields help retain lubricant and exclude larger particulate contaminants, enhancing bearing service life. Note: Lubrication is required for operation.
- Precision & Stability: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.00008" to 0.0005"), ensuring smooth and quiet running.
SR3zz Bearing Typical Application Areas
This bearing is commonly used in:
- Small precision electric motors and gear motors
- Medical and dental handpieces
- Optical encoders and instrumentation
- Office automation equipment (printers, scanners)
- Food processing machinery (due to stainless steel construction)
