SFR133 2rs
SFR Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFR133 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.13 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.09375"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.1875"
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
0.234"
Flange thickness
0.031"
Ball & Washer Dimensions
Ball diameter
0.0315"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
25 lbf
Radial static load rating
9 lbf
Limiting speed
72 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:
$ 1.76
/ each
In Stock
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SFR133 2rs Bearing Product Overview & Core Advantages
The SFR133 2RS is a miniature sealed ball bearing designed for precision applications requiring reliable performance in compact spaces. Manufactured entirely from stainless steel (rings, balls, and cage) for superior corrosion resistance, this single-row radial bearing features integral rubber seals (2RS) for effective contamination protection. Its inch-series dimensions and ABEC1 precision make it an ideal solution for applications demanding smooth operation, long service life, and consistent performance under radial loads.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| SFR133 | Basic bearing designation indicating the specific inch-size series with a bore of 0.09375", an outside diameter of 0.1875", and a width of 0.0937". |
| 2RS | Signifies that the bearing is equipped with two rubber contact seals (one on each side). These seals provide excellent protection against dust, moisture, and other contaminants, helping to retain lubricant and extend bearing life. |
SFR133 2rs Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The bearing rings, balls, and cage are all made from stainless steel, offering excellent resistance to corrosion and making it suitable for use in harsh environments or washdown applications.
- Effective Sealing: The double rubber contact seals (2RS) provide a high degree of protection, making the bearing robust against contamination. This design helps maintain lubricant integrity and contributes to low maintenance requirements.
- Precision & Smooth Operation: Built to ABEC1 tolerance class, this bearing ensures consistent dimensional accuracy and smooth running characteristics, which is critical for precision instruments.
- Radial Load Capacity: With a dynamic load rating of 25 lbf, it is engineered to handle radial loads effectively in compact assemblies.
- Wide Temperature Range: The specified temperature range of -86 to 230 °F allows for reliable operation in a variety of environmental conditions.
SFR133 2rs Bearing Typical Application Areas
This miniature sealed ball bearing is commonly used in:
- Precision Instruments and optical devices
- Small electric motors and gearboxes
- Medical devices and laboratory equipment
- Radio control models (e.g., drones, RC cars)
- Office machinery and computer peripherals
- Various low-torque, high-speed miniature machinery
