6704
6700 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6704 Bearing Product Overview & Core Advantages
The 6704 metric ball bearing is a precision-engineered single row radial bearing designed for reliable performance in compact applications. Manufactured to ABEC-1 tolerance class, it delivers consistent operation with a bore diameter of 20 mm and minimal cross-section of just 4 mm width. This open-type bearing requires lubrication but offers excellent radial load capacity (227 lbf dynamic) and smooth operation up to 10,000 rpm limiting speed. Its chrome steel construction ensures durability while maintaining compliance with ROHS and REACH environmental standards.
6704 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| 67 | Extra-thin section bearing series |
| 04 | Bore diameter code (20 mm) |
| Open | No seals or shields, requiring external lubrication |
| C0 | Normal radial internal clearance (0.006-0.020 mm) |
6704 Bearing Structural Features & Performance Benefits
Compact Design: With an ultra-thin 4 mm width and 27 mm OD, this bearing enables space-optimized solutions while maintaining structural integrity.
Precision Performance: The ABEC-1 tolerance class ensures consistent running accuracy, while the stainless steel cage provides reliable guidance at high speeds.
Load Handling: Engineered for radial loads with a dynamic rating of 227 lbf, the bearing features optimized raceway geometry for smooth operation.
Material Excellence: Chrome steel rings and balls deliver superior wear resistance and fatigue life, operating effectively within a -30°C to 110°C temperature range.
6704 Bearing Typical Application Areas
- Precision instruments and measuring devices requiring minimal vibration
- Small electric motors and miniature drives in automation systems
- Medical equipment components where compact size and reliability are critical
- Office machinery including printers, scanners, and copiers
- Robotic joints and miniature mechanical assemblies
- Textile machinery guides and tensioning systems
