SR4A 2rs
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR4A 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
10 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.75"
Outside diameter tolerance
-0.0003" to 0"
Width
0.2812"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.1378"
Ball quantity
6
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
401 lbf
Radial static load rating
145 lbf
Limiting speed
32.4 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:
$ 1.12
/ each
In Stock
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SR4A 2rs Bearing Product Overview & Core Advantages
The SR4A 2RS is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Constructed entirely from stainless steel and featuring integral rubber seals (2RS), this bearing offers reliable radial load capacity and robust protection against contamination. Its compact inch-series design (0.25" bore) makes it an ideal choice for applications requiring corrosion resistance, consistent operation across a wide temperature range, and long-term reliability with minimal maintenance.
SR4A 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR4 | Standard bearing series with a 0.25" bore diameter. |
| A | Denotes specific internal design and clearance (MC3). |
| 2RS | Bearing is equipped with two rubber contact seals on both sides, providing superior protection against dust and moisture. |
SR4A 2rs Bearing Structural Features & Performance Benefits
- Robust Sealing: The 2RS nitrile rubber seals make the bearing highly resistant to contaminants and moisture, significantly extending service life in harsh environments.
- Corrosion Resistance: Manufactured entirely from stainless steel (rings, balls, and cage), this bearing is suitable for applications exposed to corrosive agents or requiring frequent washdown.
- Precision & Smooth Operation: Built to ABEC1 tolerance standards, it ensures consistent performance and low vibration. The optimized MC3 radial internal clearance is suited for a wide range of operational conditions.
- High-Speed Capability: With a limiting speed of 32,400 rpm, it is engineered for high-speed applications. The six precision-ground balls and stainless steel cage contribute to smooth rotation at elevated speeds.
- Broad Temperature Range: Operates effectively from -86°F to 230°F, making it versatile for various industrial and specialized equipment.
SR4A 2rs Bearing Typical Application Areas
- Food & Beverage Processing Equipment (conveyors, mixers)
- Medical and Laboratory Devices (small motors, pumps)
- Precision Instruments and Optical Equipment
- Chemical Processing Pumps and Valves
- Marine and Outdoor Equipment requiring corrosion resistance
