3304 A
Double Row Angular Contact Ball Bearings
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3304 A Bearing Product Overview & Core Advantages
The 3304 A is a metric double row angular contact ball bearing engineered for applications requiring high precision and robust performance. This bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and bidirectional axial loads. Its open design facilitates optimal lubrication management, while the P6 (ABEC-3) tolerance class ensures exceptional running accuracy. With a limiting speed of 13,000 rpm and manufactured from premium chrome steel components, it delivers reliable operation in demanding, high-rigidity environments.
3304 A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| A | Designates a 30° contact angle, optimized for handling higher axial loads. |
| (No Seal Suffix) | Indicates an open (non-contact) seal type, allowing for high-speed operation and custom lubrication regimes. |
3304 A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides superior radial and axial stiffness, enabling stable support under combined loads. The optimized 30° contact angle significantly enhances axial load carrying capacity in both directions.
- Precision & Speed: Manufactured to P6 (ABEC-3) tolerance standards, this bearing ensures minimal vibration and precise rotation. The stainless steel cage and open design contribute to a high limiting speed of 13,000 rpm, making it suitable for high-speed applications.
- Durability & Material Quality: Rings and balls made from chrome steel offer excellent wear resistance and fatigue life. The stainless steel cage provides high strength and corrosion resistance, ensuring long-term reliability.
- Versatile Lubrication: The open seal design allows for easy initial lubrication and relubrication, adapting to various operational requirements within a temperature range of -30°C to 110°C.
3304 A Bearing Typical Application Areas
This double row angular contact ball bearing is ideally suited for precision machinery and equipment where high rigidity and speed are critical. Common applications include:
- Machine Tool Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- High-Speed Automation Equipment
- Medical and Laboratory Instruments
