321MF
200, 300 & 6400 Series Industrial Single Row Deep Groove Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Performance
Materials
Environment & Compliance
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321MF Bearing Product Overview & Core Advantages
The 321MF metric ball bearing is a high-performance single row deep groove ball bearing designed for reliable operation in demanding industrial applications. Engineered to primarily handle radial loads, it features an open design that facilitates high-speed operation. Manufactured to ABEC 1 | ISO P0 tolerance standards, this bearing ensures consistent performance and is an ideal choice for applications requiring a balance of cost-effectiveness and dependable functionality. Its robust construction from chrome steel provides excellent durability and a long service life.
321MF Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 321MF | Basic bearing designation, indicating a specific size and series within the manufacturer's catalog. |
| Open (Seal Type) | No seals or shields. This allows for higher speeds and easier re-lubrication but requires a clean operating environment. |
| None (Lubrication) | The bearing is supplied without grease or oil. This provides flexibility for the user to apply a lubricant suitable for the specific application. |
321MF Bearing Structural Features & Performance Benefits
- High Load Capacity: The single row deep groove raceway and high-quality chrome steel construction provide a robust radial dynamic load rating of 16,800 lbf and an equivalent static load rating, ensuring reliable performance under significant stress.
- Precision & Consistency: Manufactured to ABEC 1 (ISO P0) tolerance class with a standard CN radial internal clearance, this bearing offers predictable running accuracy and smooth operation, minimizing vibration and noise.
- Optimized for Speed: The open design and chrome steel cage reduce friction and drag, making the bearing suitable for high-speed applications where sealed variants may be limiting.
- Material Integrity: All core components—rings, balls, and cage—are made from chrome steel, providing high hardness, wear resistance, and dimensional stability across its operating temperature range of -30°C to 120°C.
321MF Bearing Typical Application Areas
The 321MF bearing is versatile and finds use in a wide range of industrial machinery and equipment, including:
- Electric Motors and Generators
- Industrial Gearboxes
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Fans
- General machinery requiring a reliable, standard-precision ball bearing.
