SR144 2rs
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR144 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.4 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
0.25"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1094"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.03941"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
49 lbf
Radial static load rating
15 lbf
Limiting speed
60.3 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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SR144 2rs Bearing Product Overview & Core Advantages
The SR144 2RS is a single row deep groove ball bearing designed for exceptional reliability in demanding applications. This inch-sized bearing features integrated rubber seals (2RS) on both sides, providing superior protection against contaminants. Manufactured entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. Its compact design and high limiting speed make it an ideal choice for applications requiring precise radial load support and long-term performance in various environmental conditions.
SR144 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| SR144 | Standard bearing series designation with specific inch dimensions (Bore: 0.125", OD: 0.25", Width: 0.1094"). | Defines the bearing size and basic geometry for interchangeability. |
| 2RS | Contact Nitrile Rubber Seals on both sides of the bearing. | Provides effective protection against dust and moisture ingress, extending service life and reducing maintenance. |
SR144 2rs Bearing Structural Features & Performance Benefits
- Stainless Steel Construction: All critical components—inner ring, outer ring, balls, and cage—are made from stainless steel. This ensures excellent corrosion resistance and suitability for use in harsh environments, including those with exposure to water or chemicals.
- Deep Groove Raceway: The optimized raceway geometry enables the bearing to handle not only radial loads but also moderate axial loads in both directions, offering versatile load capacity.
- Sealed & Pre-Lubricated Design: The double-sided Nitrile rubber seals (2RS) effectively retain lubricant and exclude contaminants. This design contributes to a maintenance-free operation for the majority of its service life under standard conditions.
- High-Speed Capability: With a limiting speed of 60,300 rpm, the bearing is engineered for high-speed applications. The precision stainless steel cage ensures stable operation and smooth rotation at elevated speeds.
- Precision & Clearance: Manufactured to ABEC1 tolerance class with an MC3 radial internal clearance, it provides consistent performance and reliable operation in a wide range of applications.
SR144 2rs Bearing Typical Application Areas
This bearing is ideally suited for a variety of compact and precision-driven applications, including:
- Small Electric Motors and Precision Gearboxes
- Medical Devices and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Systems
- Food Processing Machinery (benefiting from its stainless steel construction)
- Various light-duty industrial machinery requiring reliable, sealed bearings.
