SF6903ZZ
SF Series Stainless Steel Flanged 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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SF6903ZZ Bearing Product Overview & Core Advantages
The SF6903ZZ is a metric flanged ball bearing designed for precision applications requiring compact design and reliable performance. This single row bearing features stainless steel construction throughout its rings, cage, and shields, providing excellent corrosion resistance. With its shielded design and optimized internal geometry, it delivers consistent performance in radial load applications while maintaining dimensional stability across its operating temperature range.
SF6903ZZ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
| SF6903 | Basic bearing designation with 17mm bore, 30mm OD | Standardized dimensions for easy replacement |
| ZZ | Double shielded on both sides | Effective contamination protection, extended service life |
SF6903ZZ Bearing Structural Features & Performance Benefits
Flanged Design: The integrated flange (32.5mm OD) provides secure mounting and precise axial positioning, eliminating the need for additional components and reducing assembly complexity.
Stainless Steel Construction: All critical components including rings, cage, and shields are manufactured from stainless steel, ensuring excellent corrosion resistance and suitability for harsh environments.
Optimized Internal Geometry: With 11 precision balls of 3.969mm diameter arranged in a single row, the bearing achieves balanced load distribution and smooth operation.
Shielded Protection: The double ZZ shields effectively retain lubrication while excluding contaminants, making the bearing suitable for applications where frequent relubrication is impractical.
Precision Tolerance: Manufactured to ABEC-1 tolerance class with C0 radial clearance (0.002-0.013mm), ensuring consistent performance in precision applications.
SF6903ZZ Bearing Typical Application Areas
- Small precision motors and miniature gearboxes
- Medical equipment components and laboratory instruments
- Office automation devices including printers and scanners
- Food processing equipment requiring corrosion-resistant components
- Robotic joints and small automation mechanisms
- Optical instruments and precision measurement devices
