6303-2ZJEM
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6303-2ZJEM Bearing Product Overview & Core Advantages
The 6303-2Z JEM is a single row deep groove ball bearing designed for reliable performance in various industrial applications. This shielded bearing offers excellent radial load capacity and moderate speed capabilities. Its key advantages include robust construction using chrome steel components, providing durability and consistent operation. The integrated shields protect against contamination while maintaining smooth rotation, making it suitable for applications requiring maintenance-free operation and long service life.
6303-2ZJEM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 6303 | Basic bearing designation indicating metric dimensions (17mm bore, 47mm OD, 14mm width) |
| 2Z | Non-contact shields on both sides providing effective contamination protection |
| JEM | Manufacturer-specific designation for standard ABEC 1 precision class |
6303-2ZJEM Bearing Structural Features & Performance Benefits
Deep Groove Design: The optimized raceway geometry enables efficient radial load distribution and accommodates moderate axial loads in both directions.
Shielded Protection: Non-contact steel shields on both sides effectively exclude contaminants while minimizing friction, contributing to the 15,000 rpm limiting speed.
Material Excellence: All critical components including rings, balls, and cage are manufactured from chrome steel, ensuring high hardness, wear resistance, and dimensional stability.
Precision Engineering: Manufactured to ABEC 1 | ISO P0 tolerance class with standard CN radial clearance, providing consistent performance across the operating temperature range of -30°C to 120°C.
6303-2ZJEM Bearing Typical Application Areas
- Electric Motors: Main and auxiliary motor applications requiring reliable radial bearing performance
- Industrial Gearboxes: Power transmission systems where contamination protection is essential
- Material Handling Equipment: Conveyor systems, pulleys, and rollers
- Agricultural Machinery: Implement drives and auxiliary systems
- General Industrial Machinery: Pumps, fans, and light-duty machinery requiring maintenance-free operation
