6303-2Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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6303-2Z Bearing Product Overview & Core Advantages
The 6303-2Z is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered with metric dimensions and manufactured to P6 tolerance class, it offers high precision and reliable operation. Its key advantage lies in its ability to accommodate high radial loads and moderate axial loads in both directions. The inclusion of shielded seals (2Z) and pre-applied grease lubrication provides robust contamination protection and long-term, maintenance-free service, making it an ideal compact bearing solution for various industrial machinery.
6303-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 6303 | Basic Bearing Series & Size | Indicates a medium series deep groove ball bearing with a 17mm bore, 47mm OD, and 14mm width. |
| 2Z | Shielded on Both Sides | Provides effective protection against solid contaminants while maintaining low friction and enabling high-speed operation up to 17,000 rpm. |
6303-2Z Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The deep groove raceway and precision-ground chrome steel components ensure smooth operation and high dynamic load rating (3215 lbf), providing reliable performance under significant radial loads.
Robust Cage Design: The stainless steel cage offers excellent strength and corrosion resistance, contributing to stability and extended service life at high rotational speeds.
Sealed & Pre-Lubricated for Longevity: The non-contact shielded seals retain the factory-applied grease, effectively excluding contaminants. This design minimizes friction and eliminates the need for re-lubrication, making it a maintenance-free bearing solution suitable for a wide temperature range from -30°C to 120°C.
High-Precision Manufacturing: Conforming to P6 tolerance class and standard radial internal clearance (CN), this bearing ensures precise shaft running accuracy and minimal vibration, which is critical for applications requiring smooth and quiet operation.
6303-2Z Bearing Typical Application Areas
The 6303-2Z is widely used across various industries due to its versatility, reliability, and sealed design. Common applications include:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Fans and Blowers
- Material Handling Equipment (Conveyors, Pulleys)
- Agricultural Machinery
- Appliance Motors (e.g., washing machines, dryers)
