SFRW133zz
SFRW Series Stainless Steel Extended Inner Ring Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFRW133zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.21 g
Tolerance class
ABEC1
Seal type
Shielded
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
Extended
Inner ring width
0.125"
Shoulder diameter inner ring
0.118"
Outer Ring Dimensions
Flange outer diameter
0.234"
Flange thickness
0.031"
Ball & Washer Dimensions
Ball diameter
0.0236"
Ball quantity
10
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
0.00008" to 0.0005"
Radial internal clearance
MC3
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 4.88
/ each
In Stock
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SFRW133zz Bearing Product Overview & Core Advantages
The SFRW133zz is a miniature stainless steel ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row radial ball bearing with shielded construction, it effectively handles radial loads while offering protection from contamination. Manufactured from stainless steel throughout, it provides excellent corrosion resistance, making it suitable for demanding environments. Its compact design, featuring an extended inner ring for secure mounting, is ideal for applications where space is limited and high reliability is essential.
SFRW133zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SFRW | Manufacturer's series prefix for miniature flanged bearings. |
| 133 | Bearing size designation. |
| zz | Indicates shielded on both sides. The "z" suffix denotes a non-contact metal shield, protecting the bearing from contaminants while minimizing friction. |
SFRW133zz Bearing Structural Features & Performance Benefits
- Compact & Robust Design: The single row construction with a stainless steel cage and 10 precision balls provides a compact and lightweight solution without sacrificing strength.
- Extended Inner Ring & Flange: The extended inner ring facilitates easier mounting and axial location. The integral flange (OD: 0.234") allows for simplified housing design and secure mounting, preventing axial movement.
- Shielded Protection: The double-shielded (zz) design effectively seals the bearing from dust and other particulates, enhancing operational life in unclean environments. This design helps retain lubrication.
- Corrosion Resistance: Constructed entirely from stainless steel (rings, balls, cage, shields), this bearing is highly resistant to corrosion, suitable for use in humid or chemically aggressive atmospheres.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), ensuring smooth and consistent operation.
SFRW133zz Bearing Typical Application Areas
- Small Precision Motors: Ideal for stepper motors, DC motors, and fan motors requiring low noise and long life.
- Medical Devices: Used in surgical handpieces, dental tools, and diagnostic equipment where reliability and corrosion resistance are critical.
- Office Automation Equipment: Suitable for printers, scanners, and copiers.
- Instrumentation and Control Systems: Applied in encoders, sensors, and small gearboxes.
- Radio Control Models & Hobbyist Projects: Commonly used in drones, RC cars, and other miniature machinery.
