SFR188 2rs
SFR Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFR188 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.54 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.5"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1875"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.547"
Flange thickness
0.045"
Ball & Washer Dimensions
Ball diameter
0.0787"
Ball quantity
8
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
310 lbf
Radial static load rating
72 lbf
Limiting speed
36 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:
$ 1.59
/ each
In Stock
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SFR188 2rs Bearing Product Overview & Core Advantages
The SFR188 2rs is a sealed single row ball bearing engineered for high reliability in demanding applications. Constructed entirely from stainless steel (rings, balls, and cage) for superior corrosion resistance, this bearing is designed to handle radial loads efficiently. Its compact inch-series design (0.25" bore, 0.5" OD) and integral flanged outer ring facilitate easy mounting and precise axial location. The inclusion of Nitrile rubber seals (2RS) provides excellent protection against contaminants, making it a robust, long-life component for various precision mechanisms.
SFR188 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| 2RS | Contact seals on both sides made of Nitrile Rubber (NBR). | Provides superior sealing effectiveness against dust, moisture, and other contaminants, enhancing bearing life in harsh environments. |
SFR188 2rs Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The bearing rings, 8 precision balls, and cage are made from stainless steel, offering excellent resistance to corrosion and enabling use in washdown or chemically aggressive environments.
- High-Speed Capability: With a limiting speed of 36,000 rpm, the bearing is suitable for high-velocity applications. The stainless steel cage ensures stability and low friction at high rotational speeds.
- Robust Sealing: The Nitrile rubber contact seals (2RS) effectively retain lubricant and exclude contaminants, contributing to reduced maintenance and extended service intervals.
- Flanged Design: The outer ring flange (0.547" diameter) simplifies installation and positioning within a housing, saving space and assembly time.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.00008" to 0.0005"), ensuring smooth and consistent operation.
SFR188 2rs Bearing Typical Application Areas
- Food Processing & Packaging Equipment (conveyors, fillers)
- Medical and Laboratory Devices (small pumps, analyzers)
- Precision Instruments and Optical Devices
- Small Electric Motors and Gearboxes
- Office Automation Equipment (printers, scanners)
