6311-Z/GJN
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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6311-Z/GJN Bearing Product Overview & Core Advantages
The 6311-Z is a single row deep groove ball bearing designed for exceptional performance in demanding industrial applications. This metric bearing features a shielded design on one side, offering effective protection against contaminant ingress while maintaining high-speed capability. Engineered to primarily handle radial loads, its robust construction ensures high reliability and long service life. Manufactured to ABEC 1 | ISO P0 tolerance standards, it provides precise operation and is an ideal, cost-effective solution for a wide range of machinery requiring dependable rotational accuracy.
Model Code Breakdown
| Model Segment | Interpretation | Technical Significance |
|---|---|---|
| 6311 | Basic Bearing Number | Denotes a single row deep groove ball bearing with a 55 mm bore, 120 mm OD, and 29 mm width. |
| -Z | Shield Designation | Indicates a non-contact steel shield fitted on one side of the bearing. This provides protection from large particulate contaminants without significantly increasing friction, aiding in maintaining a high limiting speed. |
| /GJN | Lubrication Designation | Signifies that the bearing is pre-lubricated with GJN grease. This is a high-quality, polyurea-thickened grease offering excellent performance across a wide temperature range (-30°C to +120°C), contributing to extended re-lubrication intervals. |
6311-Z/GJN Bearing Structural Features & Performance Benefits
- Optimized Deep Groove Raceway: The geometry of the raceways is designed for smooth operation and efficient handling of radial loads, making it a versatile choice for various applications.
- Shielded Protection: The Z-shield effectively seals one side of the bearing, protecting the internal components from dust and debris, thereby enhancing operational reliability and longevity.
- Pre-Lubricated for Service Life: Filled with GJN grease, the bearing arrives ready for installation and is optimized for long-term performance, reducing initial maintenance requirements.
- High-Quality Material Construction: All critical components—rings, balls, and cage—are manufactured from chrome steel, ensuring high strength, durability, and consistent performance under load.
- Standardized Precision: Conforming to ABEC 1 | ISO P0 tolerance class and CN radial internal clearance, this bearing guarantees reliable, low-vibration, and precise rotation for general industrial use.
6311-Z/GJN Bearing Typical Application Areas
The 6311-Z/GJN is a fundamental component across numerous industries due to its robust design and reliable performance. Key application areas include:
- Electric Motors and Generators
- Industrial Gearboxes and Transmissions
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- Ventilation and Air Conditioning Fans
- General Industrial Machinery requiring dependable, medium-duty ball bearing support.
