SR2A
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR2A
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
3.3 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
0.5"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1719"
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
110 lbf
Radial static load rating
37 lbf
Limiting speed
47.7 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
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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SR2A Bearing Product Overview & Core Advantages
The SR2A is a single row deep groove ball bearing designed for high performance in compact spaces. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide temperature range from -86 to 230 °F. As a fundamental radial bearing, it excels in applications requiring reliable operation under radial dynamic loads and moderate speeds. Its open design allows for versatile lubrication options, making it a versatile and durable choice for precision assemblies.
SR2A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR2A | Standard series designation for a single row, deep groove ball bearing. |
| Open | No seals or shields, allowing for high-speed operation and custom lubrication. |
| ABEC1 | Specifies the tolerance class, indicating standard precision suitable for a wide range of general applications. |
| MC3 | Defines the radial internal clearance group, optimized for standard operating conditions. |
SR2A Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, and the stainless steel cage, are made from corrosion-resistant stainless steel, ensuring long service life and reliability in harsh environments.
- Optimized Load Capacity: The deep groove raceway and 7-ball complement are engineered to handle a radial dynamic load rating of 110 lbf, providing dependable performance under significant stress.
- High-Speed Capability: The open design and precision construction contribute to a limiting speed of 47,700 rpm, making it an excellent choice for high-rotation applications.
- Precision Internal Clearance: The MC3 radial clearance (0.00008" to 0.0005") ensures smooth, low-noise, and low-vibration operation, which is critical for sensitive equipment.
SR2A Bearing Typical Application Areas
This bearing is ideally suited for a variety of industries and equipment, including:
- Precision medical and dental instruments
- Small electric motors and fans
- Office automation equipment (e.g., printers, scanners)
- Food processing machinery (benefiting from its stainless steel construction and ROHS/REACH compliance)
- Low-torque, high-speed spindles
