SF686
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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SF686 Bearing Product Overview & Core Advantages
The SF686 is a miniature deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. This single row bearing excels in handling primarily radial loads and is constructed entirely from stainless steel for enhanced corrosion resistance. Its open design allows for versatile lubrication options, making it suitable for high-speed operation up to 36,000 rpm. The SF686 is an ideal solution for applications demanding a combination of small bearing size, durability, and consistent operation within a specified temperature range.
SF686 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF686 | Basic bearing designation indicating the specific size series and dimensions (6mm bore, 13mm OD, 3.5mm width). |
| Open | No integral seals or shields, allowing for maximum speed and custom lubrication. |
| ABEC1 | Specifies the precision class, denoting standard manufacturing tolerances suitable for a wide range of applications. |
| MC3 | Indicates the radial internal clearance group (0.002mm to 0.013mm), optimized for general operating conditions. |
SF686 Bearing Structural Features & Performance Benefits
Compact & Lightweight Design: With a minimal cross-section (13mm OD, 3.5mm width) and a weight of only 2.21g, the SF686 is engineered for space-constrained assemblies without compromising structural integrity.
High-Speed Capability: The combination of an open design, a stainless steel cage, and 8 precision balls enables a high limiting speed of 36,000 rpm, making it a capable high-speed bearing.
Corrosion Resistance: Manufactured from stainless steel for the rings, balls, and cage, this bearing offers excellent resistance to rust and corrosion, extending service life in challenging environments.
Radial Load Capacity: The deep groove raceway and robust construction provide a dynamic load rating of 186 lbf and a static load rating of 72 lbf, ensuring reliable performance under radial loads.
SF686 Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical Devices: Used in surgical handpieces, dental tools, and diagnostic equipment requiring quiet, smooth operation.
- Office Automation Equipment: Suitable for scanners, printers, and copiers where compact size and reliability are critical.
- Instrumentation and Control Systems: Applied in encoders, sensors, and precision gauges that demand high rotational accuracy.
- Radio-Controlled Models & Drones: Provides durable and efficient performance in motor and gearbox applications.
