SFRW4zz
SFRW Series Stainless Steel Extended Inner Ring Flanged Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SFRW4zz Bearing Product Overview & Core Advantages
The SFRW4zz is a single row deep groove ball bearing designed for precision applications requiring reliable radial load capacity. Manufactured entirely from stainless steel with an extended inner ring and integral shields, this bearing offers excellent corrosion resistance and is ideal for applications demanding dimensional stability and long service life. Its compact design and ABEC1 precision class make it a robust choice for high-speed operations and environments where contamination must be minimized.
SFRW4zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF | Flanged outer ring design |
| R | Extended inner ring |
| W | Stainless Steel construction |
| 4 | Size series designation |
| zz | Non-contact steel shields on both sides for contaminant exclusion |
SFRW4zz Bearing Structural Features & Performance Benefits
Robust Construction: The single row deep groove raceway and 8 stainless steel balls provide optimal radial load capacity and smooth operation. The stainless steel cage ensures ball alignment and stability at high speeds.
Enhanced Sealing & Protection: The zz shields effectively protect the bearing interior from dust and other contaminants while minimizing friction, contributing to the high limiting speed of 99,000 rpm.
Precision & Stability: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance, this bearing delivers consistent performance and low noise levels. The extended inner ring facilitates secure mounting and axial location.
Corrosion Resistance: The all-stainless steel construction (rings, balls, cage, shields) provides excellent resistance to corrosion, making it suitable for harsh environments and extending bearing service life.
SFRW4zz Bearing Typical Application Areas
- Precision instruments and medical devices
- Small motors and gearboxes
- Office automation equipment (printers, scanners)
- Food processing machinery (due to stainless steel construction)
- Optical and encoder systems
- Low-torque, high-speed applications
