SR2 2rs
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR2 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
1.37 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.125"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1562"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
109 lbf
Radial static load rating
35 lbf
Limiting speed
50.4 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
Nitrile Rubber
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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SR2 2rs Bearing Product Overview & Core Advantages
The SR2 2RS is a precision miniature ball bearing designed for demanding applications requiring reliability and compact design. As a single row deep groove ball bearing, it efficiently handles radial loads and is sealed for long-term performance. Manufactured entirely from stainless steel with nitrile rubber seals, it offers excellent corrosion resistance and is pre-lubricated for immediate use. Its inch dimensions and ABEC1 precision class make it an ideal component for high-speed, compact assemblies where consistent performance is critical.
SR2 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| SR2 | Standard bearing series with specific inch dimensions (0.125" bore, 0.375" OD). | Ensures dimensional compatibility and interchangeability. |
| 2RS | Bearing is fitted with contact seals on both sides, made of Nitrile Rubber. | Provides superior protection against contaminants and retains lubricant, enhancing service life and enabling maintenance-free operation in many environments. |
SR2 2rs Bearing Structural Features & Performance Benefits
- Robust Sealed Construction: The dual 2RS contact seals effectively shield the bearing's internals from dust, moisture, and other contaminants. This design preserves the factory-applied lubrication, ensuring consistent performance and a long operational lifespan without the need for re-lubrication.
- High-Speed Capability: With a limiting speed of 50,400 rpm, this bearing is engineered for high-velocity applications. The optimized internal geometry, combined with seven precision balls, minimizes friction and heat generation.
- Corrosion Resistance: All critical components, including rings, balls, and cage, are manufactured from stainless steel. This makes the SR2 2RS suitable for use in harsh environments, including those with exposure to moisture or chemicals.
- Precision Performance: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), this bearing offers reliable and smooth running, reducing vibration and noise in sensitive equipment.
SR2 2rs Bearing Typical Application Areas
- Small Precision Motors (e.g., in drones, medical devices, and optical drives)
- Office Automation Equipment (e.g., printers, scanners, and copiers)
- Instrumentation and Control Systems (e.g., encoders, stepper motors)
- Radio-Controlled Models and Hobbyist Projects
- Various light-duty industrial machinery requiring compact, sealed bearings
