SF6903
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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SF6903 Bearing Product Overview & Core Advantages
The SF6903 is a metric flanged ball bearing designed for precision applications requiring compact design and reliable performance. As a single row bearing constructed with premium materials, it delivers excellent radial load capacity while its integrated flange provides secure mounting and axial positioning. Manufactured to ABEC-1 tolerance class with stainless steel components, this bearing offers corrosion resistance and consistent operation in demanding environments. Its compact dimensions (17mm bore, 30mm OD, 7mm width) make it ideal for space-constrained applications where precision and reliability are paramount.
Model Code Detailed Explanation
| Code Segment | Technical Meaning |
| SF6903 | Basic bearing designation indicating flanged construction |
| Open | No seals or shields, allowing for custom lubrication solutions |
| Stainless Steel | Corrosion-resistant ring material for harsh environments |
| C0 | Standard radial internal clearance (0.002mm to 0.013mm) |
SF6903 Bearing Structural Features & Performance Benefits
Flanged Design: The integrated flange (32mm outer diameter, 1.5mm thickness) provides precise axial positioning and simplifies housing design, reducing assembly complexity and improving mounting accuracy.
Premium Material Construction: Stainless steel rings and cage combined with chrome steel balls deliver excellent corrosion resistance and durability. This material combination ensures reliable performance in various environmental conditions while maintaining dimensional stability.
High-Speed Capability: With a limiting speed of 19,800 rpm and optimized ball complement (11 balls of 3.969mm diameter), the bearing achieves smooth operation at high rotational speeds while maintaining precision.
Load Performance: The bearing handles radial dynamic loads up to 929 lbf and static loads up to 518 lbf, making it suitable for applications requiring reliable performance under significant radial forces.
SF6903 Bearing Typical Application Areas
- Precision Instruments: Optical encoders, measuring devices, and laboratory equipment
- Small Motors: Stepper motors, servo motors, and miniature DC motors
- Medical Devices: Surgical tools, dental equipment, and diagnostic instruments
- Office Automation: Printers, scanners, and copier mechanisms
- Robotics: Small robotic joints, actuator mechanisms, and positioning systems
- Food Processing Equipment: Where corrosion resistance and clean operation are required
