SFRW1
SFRW Series Stainless Steel Extended Inner Ring Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFRW1
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.25 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.05556"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.1875"
Outside diameter tolerance
-0.0003" to 0"
Width
0.0781"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Extended
Inner ring width
0.1094"
Shoulder diameter inner ring
0.093"
Outer Ring Dimensions
Flange outer diameter
0.234"
Flange thickness
0.023"
Ball & Washer Dimensions
Ball diameter
0.0394"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
40 lbf
Radial static load rating
11 lbf
Limiting speed
81 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:
$ 19.17
/ each
In Stock
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SFRW1 Bearing Product Overview & Core Advantages
The inch-series miniature ball bearing is a precision-engineered single row radial ball bearing designed for compact applications requiring reliable performance. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its extended inner ring facilitates secure mounting and axial location. This bearing is ideal for applications demanding high rotational accuracy within the ABEC1 tolerance class and is capable of operating across a wide temperature range from -86 to 230 °F. Its open design allows for custom lubrication to suit specific operational needs.
SFRW1 Bearing Model Code Explained, Specifications & Naming Convention
| Feature | Designation | Technical Significance |
|---|---|---|
| Seal Type | Open | No integral seals; allows for custom lubrication schemes and minimizes running torque. |
| Inner Ring | Extended | Provides a larger contact surface for secure mounting and simplifies axial positioning. |
| Tolerance Class | ABEC1 | Defines standard precision level for dimensional accuracy and running smoothness. |
| Internal Clearance | MC3 | Specifies a radial internal clearance group suitable for a wide range of general applications. |
SFRW1 Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of just 0.05556" and a weight of only 0.25g, this bearing is engineered for space-constrained and weight-sensitive miniature assemblies.
- High-Speed Capability: The combination of a stainless steel cage, seven precision balls, and an open design contributes to a high limiting speed of 81,000 rpm, making it suitable for high-velocity spindles.
- Corrosion Resistance: All components, including rings, balls, and cage, are made from stainless steel, ensuring long-term performance in humid or corrosive environments.
- Radial Load Capacity: Engineered to handle radial dynamic loads up to 40 lbf, providing reliable support in applications where radial forces are predominant.
SFRW1 Bearing Typical Application Areas
This inch-series miniature bearing is commonly specified in:
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment.
- Small Motors & Gearboxes: Stepper motors, DC micromotors, and precision gearheads.
- Office Automation: Printers, scanners, and copiers.
- Robotics: Miniature joints, actuators, and drone propulsion systems.
