SFR3
SFR Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFR3
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.5 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.1875"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.5"
Outside diameter tolerance
-0.0003" to 0"
Width
0.156"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.565"
Flange thickness
0.042"
Ball & Washer Dimensions
Ball diameter
0.0937"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
224 lbf
Radial static load rating
79 lbf
Limiting speed
38.7 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
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.59
/ each
In Stock
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SFR3 Bearing Product Overview & Core Advantages
The SFR3 is a high-precision, single row deep groove ball bearing designed for demanding applications requiring reliable radial load capacity and smooth operation. Manufactured entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. This bearing is characterized by its compact bearing dimensions (0.1875" bore, 0.5" OD) and is supplied as an open type, providing flexibility for custom lubrication schemes. Its ABEC1 precision class and robust construction make it an ideal choice for applications where consistent performance and longevity are critical.
SFR3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Significance |
|---|---|
| SFR3 | Standard series designation for a specific inch-sized, single row deep groove ball bearing. |
| Open | No integral seals or shields. This allows for higher limiting speeds and custom lubrication but requires a clean operating environment or external sealing. |
| Stainless Steel | Material for all core components (rings, balls, cage), providing superior corrosion resistance. |
| MC3 | Specifies the radial internal clearance group (0.00008" to 0.0005"), which is optimized for general operating conditions. |
SFR3 Bearing Structural Features & Performance Benefits
- Robust Single Row Design: The deep groove raceway and complement of seven precision balls enable efficient handling of radial loads (dynamic: 224 lbf, static: 79 lbf) and moderate axial loads in both directions.
- High-Speed Capability: The one-piece stainless steel cage and optimized internal geometry contribute to a high limiting speed of 38,700 rpm, making it suitable for high-speed applications.
- Precision & Stability: Manufactured to ABEC1 tolerance standards with controlled radial internal clearance (MC3), ensuring smooth, low-vibration, and precise running.
- Corrosion Resistance & Durability: The all-stainless-steel construction ensures reliable performance in humid or corrosive environments, extending service life.
SFR3 Bearing Typical Application Areas
- Precision Instruments and Optical Devices
- Small High-Speed Motors and Spindles
- Medical and Dental Equipment
- Food and Beverage Processing Machinery
- Robotics and Automation Actuators
