SR133zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR133zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.15 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.09375"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.1875"
Outside diameter tolerance
-0.0003" to 0"
Width
0.0937"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.0236"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
25 lbf
Radial static load rating
9 lbf
Limiting speed
72 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:
$ 1.47
/ each
In Stock
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SR133zz Bearing Product Overview & Core Advantages
The SR133zz is a precision miniature ball bearing engineered for demanding applications requiring high reliability in compact spaces. As a single row deep groove ball bearing with shielded construction, it is primarily designed to handle radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide operating temperature range. Its compact inch dimensions, high limiting speed, and compliance with RoHS and REACH standards make it an ideal choice for high-performance miniature mechanisms.
SR133zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR | Standard single row deep groove ball bearing. |
| 133 | Specific bearing series and size code for inch dimensions. |
| zz | Indicates the bearing is equipped with shields on both sides. This provides protection against contamination while allowing for higher speeds compared to sealed types. |
SR133zz Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and complement of 7 balls are precision-machined for smooth operation and reliable radial load capacity.
- Corrosion Resistance: All components, including rings, balls, cage, and shields, are made from stainless steel, ensuring long service life in harsh or washdown environments.
- Contamination Protection: The non-contact shields (zz) help retain lubrication and exclude larger particulate contaminants, enhancing bearing longevity.
- High-Speed Capability: The combination of a stainless steel cage, precision ABEC1 tolerances, and optimized internal geometry contributes to a high limiting speed of 72,000 rpm.
- Precision & Clearance: Built to ABEC1 tolerance class with an MC3 radial internal clearance, ensuring consistent performance and low running noise in precision assemblies.
SR133zz Bearing Typical Application Areas
This bearing is ideally suited for applications where miniaturization, speed, and reliability are critical. Key sectors include:
- Precision Instruments: Optical encoders, gauges, and medical devices.
- Small Motors and Gearboxes: Stepper motors, DC micromotors, and small power tools.
- Office Automation Equipment: Printers, scanners, and copiers.
- Robotics and Automation: Small robotic joints, actuators, and conveyor system guides.
- Consumer Electronics: Cooling fans, drones, and small drives.
