689 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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689 2rs Bearing Product Overview & Core Advantages
The 689 2RS is a metric single row deep groove ball bearing designed for exceptional performance in compact spaces. Featuring integrated rubber seals (2RS) on both sides, this bearing provides reliable protection against contamination while retaining lubrication. Its chrome steel construction delivers high durability and consistent operation across a wide temperature range (-30° to 110°C). With its small bore diameter of 9mm and compact cross-section, this bearing is ideal for applications demanding high precision and space efficiency while maintaining robust radial load capacity.
689 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 689 | Basic bearing designation indicating metric dimensions: 9mm bore, 17mm OD, 5mm width | Standardized bearing dimensions for easy replacement and compatibility |
| 2RS | Contact rubber seals on both sides | Superior contamination protection and lubricant retention for extended service life |
689 2rs Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables smooth operation and efficient radial load distribution, making it suitable for high-speed applications up to 36,000 rpm.
Sealed Construction: Dual nitrile rubber seals provide effective barrier against dust, moisture, and other contaminants while maintaining low friction operation.
Precision Engineering: Manufactured to ABEC1 tolerance class with controlled radial internal clearance (MC3: 0.002-0.013mm), ensuring consistent performance and minimal vibration.
Material Excellence: Chrome steel rings and balls combined with stainless steel cage deliver excellent wear resistance and corrosion protection in demanding environments.
689 2rs Bearing Typical Application Areas
- Small electric motors and miniature DC motors
- Precision instruments and laboratory equipment
- Office automation devices including printers and scanners
- Medical devices and dental handpieces
- Robotics and small automation mechanisms
- Computer cooling fans and small pumps
