685
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Inner 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
685 Bearing Product Overview & Core Advantages
The 685 bearing is a metric single row deep groove ball bearing engineered for reliable performance in compact applications. Designed primarily for radial load applications, this bearing features an open construction that facilitates easy lubrication. With its ABEC1 precision class and standardized internal clearance (MC3), it delivers consistent operation suitable for general industrial use. Its compact dimensions (5mm bore × 11mm OD × 3mm width) and lightweight design (1.16g) make it ideal for space-constrained assemblies requiring dependable rotational performance.
685 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| 68 | Deep groove ball bearing series with lightweight section |
| 5 | 5mm bore diameter |
| Open Construction | No seals or shields, allowing for direct lubrication access |
| MC3 Clearance | Standard radial internal clearance (0.002-0.013mm) |
685 Bearing Structural Features & Performance Benefits
Optimized Ball Configuration: Features 8 precision chrome steel balls with 1.588mm diameter, providing smooth operation and effective load distribution across the raceways.
Superior Material Construction: Manufactured from chrome steel rings and stainless steel cage, ensuring corrosion resistance and dimensional stability under operating temperatures from -30°C to 110°C.
Precision Engineering: Maintains ABEC1 tolerance class with tight dimensional tolerances (bore/OD: -0.008mm to 0), delivering consistent performance in precision applications.
High-Speed Capability: With a limiting speed of 45,000 rpm, this bearing supports high-rotation applications while maintaining structural integrity.
Load Capacity: Rated for 137 lbf dynamic and 51 lbf static radial loads, making it suitable for various mechanical systems requiring reliable radial support.
685 Bearing Typical Application Areas
- Small electric motors and miniature DC motors
- Precision instruments and measuring devices
- Office automation equipment including printers and scanners
- Medical devices and laboratory equipment
- Robotic components and small gearboxes
- Consumer electronics requiring compact bearing solutions
- Model making and hobbyist applications
