6903zz
6900 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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6903zz Bearing Product Overview & Core Advantages
The 6903zz is a single row deep groove ball bearing featuring integral shielded protection on both sides. Engineered for radial load applications, this metric bearing delivers reliable performance in compact spaces with its 17 mm bore and 30 mm outside diameter. Manufactured to ABEC-1 precision tolerances, it offers excellent rotational accuracy and smooth operation. The combination of chrome steel rings and balls with a stainless steel cage ensures durability and consistent performance across a wide temperature range from -30°C to 110°C.
6903zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 69 | Deep Groove Ball Bearing Series | Standard design for versatile radial load applications |
| 03 | Bore Diameter: 17 mm | Compact size for space-constrained designs |
| zz | Double Shields (Both Sides) | Effective contamination protection, extended service life |
6903zz Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway profile enables efficient handling of radial loads while accommodating moderate axial loads in both directions, making it suitable for various mounting configurations.
Shielded Protection System: The non-contact steel shields (zz designation) provide effective barrier against contaminants while maintaining low friction operation, contributing to the bearing's 26,000 rpm limiting speed capability.
Precision Engineering: Manufactured to ABEC-1 tolerance class with controlled radial internal clearance (C0), ensuring consistent performance and reduced vibration in precision applications.
Material Excellence: The combination of chrome steel rings and balls with stainless steel cage provides excellent wear resistance and corrosion protection, supporting the bearing's 1,033 lbf dynamic load rating and 576 lbf static load rating.
6903zz Bearing Typical Application Areas
- Electric Motors: Small to medium-sized motors requiring reliable radial support
- Power Tools: Drills, grinders, and other handheld equipment
- Office Automation: Printers, scanners, and copier mechanisms
- Medical Devices: Small pumps, dental handpieces, and laboratory equipment
- Automotive Components: Alternators, starters, and auxiliary motors
- Industrial Gearboxes: Small reduction units and transmission systems
