639zz
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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639zz Bearing Product Overview & Core Advantages
The 639zz is a metric single row deep groove ball bearing designed for high-performance radial load applications. Featuring shielded construction on both sides, this bearing offers reliable protection against contamination while maintaining smooth operation. With its ABEC1 precision class and optimized internal geometry, it delivers consistent performance in demanding environments. The bearing's compact design and chrome steel construction provide excellent durability and load capacity, making it suitable for applications requiring reliable rotational performance and long service life.
639zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| zz | Double-sided steel shields | Provides effective contamination protection while allowing higher speeds compared to sealed bearings |
| - | Standard radial internal clearance (MC3) | Optimized for general applications with moderate temperature variations |
639zz Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The raceway design enables the bearing to handle both radial loads and moderate axial loads in both directions, providing versatile load capacity.
Shielded Protection: Double stainless steel shields retain lubrication and protect against particulate contamination, extending bearing service life in challenging environments.
Precision Engineering: Manufactured to ABEC1 tolerance standards with MC3 radial clearance (0.002mm to 0.013mm), ensuring consistent performance and reduced vibration.
High-Speed Capability: The stainless steel cage and optimized ball complement enable operation at limiting speeds up to 24,000 rpm, suitable for high-speed applications.
Robust Construction: Chrome steel rings and balls combined with stainless steel cage provide excellent wear resistance and corrosion protection.
639zz Bearing Typical Application Areas
- Small Electric Motors: Used in precision motors, fans, and blowers requiring reliable high-speed operation
- Office Equipment: Printers, scanners, and copiers where quiet operation and long life are essential
- Medical Devices: Small medical instruments and laboratory equipment requiring precision and reliability
- Power Tools: Small handheld tools and dental instruments benefiting from the bearing's compact size and performance
- Robotics & Automation: Small robotic joints, positioning systems, and precision mechanisms
- Consumer Electronics: High-performance computer fans, small drives, and precision mechanisms
