687
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
687 Bearing Product Overview & Core Advantages
The 687 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 design that facilitates easy re-lubrication. Manufactured with chrome steel rings and balls and a stainless steel cage, it offers excellent durability and corrosion resistance. With its small bearing dimensions (7mm bore, 14mm OD, 3.5mm width) and ABEC1 precision class, the 687 provides a cost-effective solution for applications requiring stable operation and moderate speed capabilities up to 40,000 rpm.
687 Bearing Model Code Explained, Specifications & Naming Convention
| Component | Code | Technical Meaning |
|---|---|---|
| Basic Designation | 687 | Standard metric deep groove ball bearing series |
| Seal Type | Open | No seals or shields, allowing for maximum speed and easy re-lubrication |
| Tolerance Class | ABEC1 | Standard precision grade for general applications |
| Clearance | MC3 | Greater than normal radial internal clearance (0.002-0.013mm) |
687 Bearing Structural Features & Performance Benefits
The 687 bearing's single row deep groove construction provides optimal performance for radial loads while accommodating moderate axial loads in both directions. The stainless steel cage ensures reliable operation at high speeds up to 40,000 rpm, while the chrome steel components deliver excellent wear resistance and longevity. The open design allows for versatile lubrication options and efficient heat dissipation. With MC3 radial clearance (0.002-0.013mm), this bearing accommodates thermal expansion in applications with varying operating temperatures (-30° to 110°C). The compact design with a weight of only 2.03 grams makes it ideal for space-constrained applications requiring high rotational accuracy.
687 Bearing Typical Application Areas
- Small electric motors and miniature DC motors
- Precision instruments and laboratory equipment
- Office automation equipment including printers and scanners
- Medical devices and dental handpieces
- Robotics and automation systems
- Computer cooling fans and small pumps
- Radio-controlled models and hobbyist applications
