SF689 2rs
SF Series Stainless Steel 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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SF689 2rs Bearing Product Overview & Core Advantages
The SF689 2RS is a metric single row deep groove ball bearing designed for exceptional reliability in compact applications. Featuring stainless steel construction throughout its rings, balls, and cage, this bearing offers excellent corrosion resistance. Its key advantage lies in the integrated rubber seals (2RS) on both sides, providing superior protection against contaminants while retaining lubrication. This makes the SF689 2RS ideal for applications demanding high reliability and maintenance-free operation in challenging environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| SF689 | Basic bearing designation indicating metric dimensions: 9mm bore, 17mm OD, 5mm width |
| 2RS | Double rubber contact seals providing excellent protection against contamination and moisture |
SF689 2rs Bearing Structural Features & Performance Benefits
Robust Construction: Manufactured entirely from stainless steel, including rings, balls, and cage, ensuring excellent corrosion resistance and durability in harsh environments.
Superior Sealing: The double rubber contact seals (2RS) effectively exclude contaminants while retaining lubrication, enabling maintenance-free operation and extended service life.
Precision Performance: Built to ABEC1 tolerance class with optimized radial internal clearance (MC3) for smooth, quiet operation and reliable performance in precision applications.
Compact Design: With dimensions of 9mm bore × 17mm OD × 5mm width and weighing only 4.87g, this bearing offers an excellent power-to-size ratio for space-constrained applications.
SF689 2rs Bearing Typical Application Areas
- Medical equipment and surgical instruments requiring corrosion resistance and reliability
- Food processing machinery where stainless steel construction is essential
- Small precision motors and miniature gearboxes
- Office automation equipment including printers and scanners
- Laboratory instruments and measurement devices
- Robotics and small automation components
