SFR1-4
SFR Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
SFR1-4
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.46 g
Tolerance class
ABEC1
Seal type
Open
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
0.0937"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.296"
Flange thickness
0.023"
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
0.00008" to 0.0005"
Radial internal clearance
MC3
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:
$ 2.65
/ each
In Stock
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SFR1-4 Bearing Product Overview & Core Advantages
The SFR1-4 is a precision miniature ball bearing designed for demanding applications requiring high reliability in compact spaces. As a single row deep groove ball bearing in an open configuration, it is optimized for radial load applications. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide temperature range from -86 to 230 °F. Its compact bearing dimensions (0.07813" bore x 0.25" OD) and lightweight design (0.46 g) make it an ideal solution for miniature assemblies and high-speed mechanisms.
SFR1-4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SFR | Series designation for miniature flanged ball bearings. |
| 1-4 | Specifies the specific bearing size within the series. |
| Open (Implied) | No seals or shields, allowing for higher limiting speeds and easy re-lubrication. Requires external lubrication. |
SFR1-4 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The open design, combined with a stainless steel cage and 7 precision balls, enables a very high limiting speed of 60,300 rpm, making it suitable for high-speed miniature spindles and motors.
- Corrosion Resistance: Constructed entirely from stainless steel (rings, balls, and cage), this bearing is ideal for applications exposed to moisture, chemicals, or requiring washdown.
- Precision & Smooth Operation: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), ensuring consistent performance and low vibration.
- Flanged Design: The integrated flange (0.296" OD) simplifies mounting and positioning, providing accurate axial location within a housing and resisting creep.
- Radial Load Capacity: With a dynamic load rating of 49 lbf and a static load rating of 15 lbf, it provides reliable performance in compact spaces.
SFR1-4 Bearing Typical Application Areas
This bearing is engineered for precision applications where small size, high speed, and corrosion resistance are critical.
- Miniature and Instrument DC Motors
- Medical and Dental Handpieces
- Precision Instruments and Optical Encoders
- Small Robotics and Actuators
- Office Automation Equipment (e.g., small printers, scanners)
- Radio-Control Models and Drones
