SFR188zz
SFR Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFR188zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.54 g
Tolerance class
ABEC1
Seal type
Shielded
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
300 Series 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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SFR188zz Bearing Product Overview & Core Advantages
The SFR188zz is a single row deep groove ball bearing designed for precision applications requiring reliable performance. Manufactured entirely from stainless steel components, it offers excellent corrosion resistance and durability. This bearing is engineered to primarily handle radial loads and features integral shields (ZZ) to protect against contamination. Its compact inch-series design, combined with ABEC1 precision tolerances, makes it an ideal choice for applications demanding high reliability and consistent operation in challenging environments.
SFR188zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SFR | Manufacturer series designation for a specific line of miniature and instrument ball bearings. |
| 188 | Bore size code corresponding to a 0.25" bore diameter. |
| zz | Indicates the bearing is equipped with non-contact shields on both sides. This provides effective protection against dust and debris while minimizing friction and allowing for higher speeds compared to contact seals. |
SFR188zz Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, cage, and shields, are made from 300 series stainless steel, providing superior corrosion resistance and enabling operation in a wide temperature range from -86 to 230 °F.
- Optimized Deep Groove Raceway: The deep groove geometry of the inner and outer rings is designed for efficient radial load handling, ensuring smooth rotation and long service life.
- Shielded Contamination Protection: The ZZ shields are a key feature, protecting the internal bearing components from particulate contamination without significantly increasing rotational torque, contributing to the bearing's limiting speed of 36,000 rpm.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance, this bearing delivers consistent and predictable performance, reducing vibration and noise in precision assemblies.
SFR188zz Bearing Typical Application Areas
- Medical and Dental Instruments
- Precision Optical Devices and Encoders
- Small Electric Motors and Fans
- Office Automation Equipment (e.g., printers, scanners)
- Robotics and Miniature Actuators
- Food Processing and Packaging Machinery
