SR1-4 2rs
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR1-4 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.53 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.07813"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.25"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1406"
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:
$ 2.29
/ each
In Stock
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SR1-4 2rs Bearing Product Overview & Core Advantages
The SR1-4 2RS is a miniature deep groove ball bearing engineered for precision applications requiring compact design and reliable performance. Constructed entirely from stainless steel with integral rubber seals (2RS), this sealed bearing offers excellent corrosion resistance and protection from contaminants. Its design is optimized to handle primarily radial loads and is characterized by low friction and smooth operation, making it an ideal component for high-speed, miniature mechanisms where space is at a premium and long-term reliability is critical.
Model Code In-Depth Analysis
| Model Segment | Technical Meaning | Benefit |
|---|---|---|
| SR1-4 | Standard designation for a specific series of miniature, inch-size bearings with a 0.07813" bore and 0.25" outside diameter. | Defines the core bearing dimensions and series, ensuring interchangeability. |
| 2RS | Indicates the bearing is fitted with two (2) Nitrile Rubber Contact Seals (RS) on both sides. | Provides superior protection against dust and moisture ingress, retaining lubricant for extended service life and making it suitable for maintenance-free or difficult-to-access applications. |
SR1-4 2rs Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The rings, balls, and cage are manufactured from stainless steel, granting excellent resistance to rust and corrosion, which is vital for operation in harsh environments or applications requiring frequent washdowns.
- Robust Sealing with 2RS: The dual nitrile rubber contact seals effectively shield the internal bearing components from contaminants while retaining the factory-applied lubricant. This design contributes to a long operational life with minimal maintenance.
- Optimized for High Speeds: With a limiting speed of 60,300 rpm, the bearing's precision-ground components and balanced design enable smooth, low-vibration operation at high rotational velocities.
- Precision & Load Capacity: Manufactured to ABEC1 tolerance class, it ensures consistent performance. The radial dynamic load rating of 49 lbf confirms its capability to handle significant radial forces for its compact size.
SR1-4 2rs Bearing Typical Application Areas
This miniature deep groove ball bearing is ideally suited for a wide range of small-scale, precision-driven industries and devices, including:
- Small Precision Motors: Used in stepper motors, servo motors, and DC micromotors.
- Medical and Dental Equipment: Found in handheld surgical tools, dental handpieces, and pump drives due to its corrosion resistance and reliability.
- Office Automation: Critical components in printers, scanners, and copiers.
- Instrumentation and Control Systems: Used in encoders, sensors, and guidance systems.
- Radio-Controlled Models and Drones: Supports high-speed operation in motors and gearboxes.
