688 2rs
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
688 2rs Bearing Product Overview & Core Advantages
The 688 2RS is a sealed single row deep groove ball bearing designed for reliable performance in compact applications. This metric bearing excels in handling radial loads and offers robust operation within its specified limits. Its key advantages include a sealed design for contamination protection, making it suitable for applications requiring minimal maintenance and consistent performance. The combination of chrome steel rings and balls with a stainless steel cage ensures durability and reliable rotation, positioning it as an excellent choice for general industrial use where space is constrained and reliability is paramount.
688 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 688 | Basic bearing designation indicating the bearing size series with an 8 mm bore, 16 mm outside diameter, and 5 mm width. |
| 2RS | Signifies contact seals on both sides of the bearing, providing superior protection against contaminants and retention of lubricant compared to non-contact shields. |
688 2rs Bearing Structural Features & Performance Benefits
- Robust Sealing: The 2RS nitrile rubber contact seals effectively exclude contaminants like dust and moisture while retaining lubricant, significantly enhancing bearing service life and enabling operation in less-than-ideal environments.
- Optimized Internal Geometry: The deep groove raceway and precision-ground components enable smooth operation and efficient handling of radial loads.
- Stable Cage Design: The stainless steel cage precisely guides the 10 balls, ensuring stable operation and contributing to the bearing's limiting speed of 36,000 rpm.
- Precision & Consistency: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), this bearing provides predictable performance and smooth running.
688 2rs Bearing Typical Application Areas
The 688 2RS bearing is ideally suited for a wide range of compact machinery and devices, including:
- Small Electric Motors: Used in fans, power tools, and small appliances.
- Precision Instruments: Suitable for medical devices, optical equipment, and measuring instruments.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Light-Duty Gearboxes and Transmissions: For applications with moderate speed and load requirements.
