SR2
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR2
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
1.04 g
Tolerance class
ABEC1
Seal type
Open
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
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 Bearing Product Overview & Core Advantages
The SR2 is a high-precision, single row deep groove ball bearing designed for exceptional performance in demanding applications. Manufactured entirely from stainless steel, it offers superior corrosion resistance and durability. This bearing is engineered to handle primarily radial loads and is characterized by its compact inch dimensions (0.125" bore), making it an ideal solution for applications requiring high reliability, smooth operation, and long service life. Its ABEC1 precision class ensures consistent performance for general precision requirements.
SR2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR2 | Standard series designation for this specific inch-sized bearing with a 0.125" bore diameter. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for easy re-lubrication and optimal for clean environments or where custom sealing is used. |
| MC3 (Internal Clearance) | Specifies a greater than normal radial internal clearance (0.00008" to 0.0005"), suitable for applications with significant thermal expansion or where interference fits are used. |
SR2 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and stainless steel cage provide excellent corrosion resistance, making the bearing suitable for harsh environments and ensuring long-term operational integrity.
- Optimized Load Capacity: With a dynamic load rating of 109 lbf and a static load rating of 35 lbf, this bearing is robust enough for a wide range of radial load applications.
- High-Speed Capability: The precision-ground components and stable cage design contribute to a high limiting speed of 50,400 rpm, enabling use in high-velocity spindles and machinery.
- Precision Engineering: The ABEC1 tolerance class and controlled internal clearance ensure smooth, low-vibration, and low-noise operation, critical for sensitive equipment.
- Wide Temperature Range: Operates effectively from -86 to 230 °F, accommodating various industrial and environmental conditions.
SR2 Bearing Typical Application Areas
- Precision Instruments and Optical Devices
- Small Electric Motors and Spindles
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Robotics and Automation Systems
- Office Machinery and Computer Peripherals
