687 2rs
600 Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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687 2rs Bearing Product Overview & Core Advantages
The 687 2RS is a metric miniature deep groove ball bearing designed for applications requiring compact dimensions and reliable performance. This single row bearing features integrated rubber seals (2RS) on both sides, providing excellent protection against contamination while retaining lubrication. Engineered with chrome steel rings and balls along with a stainless steel cage, it delivers consistent operation under radial loads and offers a balanced combination of high-speed capability and durability. Its small bearing size (7mm bore × 14mm OD × 5mm width) makes it ideal for space-constrained precision mechanisms.
687 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 687 | Basic bearing designation indicating metric dimensions (7mm bore, 14mm OD, 5mm width) | Standardized sizing for easy replacement and interchangeability |
| 2RS | Contact rubber seals on both sides | Superior contamination protection and lubricant retention for extended service life |
687 2rs Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables efficient handling of radial loads while accommodating moderate axial loads in both directions, making it versatile for various applications.
Sealed Construction: The dual Nitrile rubber seals (2RS) provide effective barrier against dust, moisture, and other contaminants, while maintaining proper lubrication. This results in reduced maintenance requirements and enhanced operational reliability.
Precision Components: Manufactured with chrome steel rings and balls for high wear resistance, combined with a stainless steel cage that ensures stable ball guidance and high-speed performance up to 40,000 rpm.
Optimized Internal Clearance: With MC3 radial internal clearance (0.002mm to 0.013mm), this bearing provides smooth operation while minimizing noise and vibration in precision applications.
687 2rs 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 dental handpieces
- Robotics and small automation mechanisms
- Computer cooling fans and small blowers
- Radio-controlled models and hobbyist applications
