309SZZG
200, 300 & 6400 Series Industrial Single Row Deep Groove Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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309SZZG Bearing Product Overview & Core Advantages
The 309SZZG is a single row deep groove ball bearing designed for reliable performance in a wide range of industrial applications. Engineered with metric dimensions and manufactured to ABEC 1 | ISO P0 tolerance standards, this bearing offers a robust solution for carrying primarily radial loads. Its shielded construction provides effective protection against contaminant ingress, enhancing service life. The use of high-grade chrome steel for all critical components ensures durability and consistent operation within a temperature range of -30°C to 120°C. This bearing is characterized by its high load capacity and dependable operation at limiting speeds up to 7,500 rpm, making it a versatile and cost-effective choice for standard machinery.
Model Code Breakdown
| Model Segment | Description | Technical Significance |
|---|---|---|
| 309 | Basic Bearing Number | Defines the standard boundary dimensions: 45 mm bore, 100 mm OD, 25 mm width. |
| SZZG | Suffix Combination | Indicates specific design features. "ZZ" denotes non-contact steel shields on both sides for contaminant exclusion with minimal friction. The "G" suffix may indicate a specific internal clearance group or other manufacturer-specific designation. |
309SZZG Bearing Structural Features & Performance Benefits
Optimized Raceway Geometry: The deep groove raceways in both inner and outer rings are precision-ground to facilitate smooth rotation and effective support for radial loads.
Shielded Protection: The inclusion of steel shields (ZZ) on both sides effectively seals the bearing, protecting the chrome steel balls and cage from dust and debris, thereby increasing reliability and operational life without significantly increasing rotational torque.
Robust Load Capacity: With a dynamic load rating of 12,364 lbf and a static load rating of 9,892 lbf, this bearing is capable of handling significant loads for its size, ensuring long-term performance in demanding applications.
Standard Precision & Clearance: Manufactured to ABEC 1 (ISO P0) tolerance class with a standard (CN) radial internal clearance, it provides a balance of precision, running accuracy, and thermal expansion accommodation for general industrial use.
309SZZG Bearing Typical Application Areas
The 309SZZG is a fundamental component across numerous industries due to its versatility and reliability. Common applications include:
- Electric Motors and Gearboxes
- Industrial Fans and Blowers
- Material Handling Conveyors
- Agricultural Machinery
- Automotive Components (e.g., alternators, idlers)
- General Machinery where reliable radial load support is required.
