S685zz
600 Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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S685zz Bearing Product Overview & Core Advantages
The S685zz is a single row deep groove ball bearing designed for precision applications requiring reliable performance in compact spaces. Constructed entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. Its key advantages include the ability to handle significant radial loads and moderate axial loads in both directions. The inclusion of shielded seals (zz suffix) helps retain lubrication and exclude contaminants, making it a robust and durable choice for applications demanding high reliability and long service life.
S685zz Bearing Model Code Explained, Specifications & Naming Convention
| Prefix/Suffix | Technical Meaning |
|---|---|
| S | Denotes the use of Stainless Steel for the bearing rings and balls, providing enhanced corrosion resistance. |
| 685 | The basic bearing designation, indicating a 5 mm bore, 11 mm outside diameter, and 5 mm width. |
| zz | Signifies that the bearing is equipped with shielded seals on both sides. These non-contact metal shields protect against large contaminants and help retain the factory-applied lubricant. |
S685zz Bearing Structural Features & Performance Benefits
Compact & Robust Design: With dimensions of just 5x11x5 mm, this bearing is ideal for space-constrained applications. The deep groove raceway and optimized geometry enable it to handle both radial and axial loads effectively.
High-Speed Capability: Featuring a stainless steel cage and a limiting speed of 40,500 rpm, the S685zz is engineered for smooth operation at high rotational velocities.
Enhanced Service Life: The combination of stainless steel construction and shielded seals provides excellent protection against corrosion and contamination, significantly extending bearing life in demanding environments.
Precision Performance: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance (0.002mm to 0.013mm), this bearing ensures consistent, low-noise, and low-vibration operation.
S685zz Bearing Typical Application Areas
The S685zz is widely used in applications requiring small size, corrosion resistance, and high-speed performance. Common uses include:
- Small Precision Motors (e.g., in drones, RC models)
- Medical and Dental Handpieces
- Office Automation Equipment (printers, scanners)
- Instrumentation and Measurement Devices
- Food Processing Equipment (due to stainless steel construction)
