SF687 2rs
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
SF687 2rs Bearing Product Overview & Core Advantages
The SF687 2RS is a metric single row deep groove ball bearing engineered for precision and reliability in compact applications. Featuring integrated rubber seals (2RS) on both sides, this bearing provides excellent contamination protection while maintaining smooth operation. Its all-stainless steel construction offers superior corrosion resistance, making it ideal for demanding environments. The bearing's optimized design delivers high rotational accuracy and stable performance under radial loads, supported by ABEC1 precision tolerances for consistent operation in precision instruments and small machinery.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| SF687 | Basic bearing designation with 7mm bore, 14mm OD | Compact dimensions for space-constrained applications |
| 2RS | Contact rubber seals on both sides | Enhanced contamination protection and lubricant retention |
SF687 2rs Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables efficient radial load distribution across all nine precision balls, reducing stress concentrations and extending service life.
All-Stainless Steel Construction: Both rings, balls, and cage are manufactured from stainless steel, providing excellent corrosion resistance and making the bearing suitable for washdown environments, medical equipment, and food processing applications.
Contact Rubber Seals (2RS): The nitrile rubber seals provide superior protection against contaminants while maintaining effective lubricant retention. This design supports the bearing's 36,000 rpm limiting speed while ensuring long-term reliability.
Precision Engineering: Manufactured to ABEC1 tolerance standards with controlled radial internal clearance (MC3: 0.002-0.013mm), ensuring smooth operation and minimal vibration in precision applications.
SF687 2rs Bearing Typical Application Areas
- Small Electric Motors: Used in miniature DC motors, stepper motors, and servo motors requiring reliable high-speed operation
- Medical Devices: Ideal for surgical instruments, dental handpieces, and diagnostic equipment where corrosion resistance and precision are critical
- Office Automation: Employed in printers, scanners, and copiers for precise paper handling mechanisms
- Precision Instruments: Suitable for measuring devices, optical equipment, and laboratory instruments requiring low-noise operation
- Robotics & Automation: Used in small robotic joints, positioning systems, and miniature automation components
