The 6304 ZZ deep groove ball bearing is a reliable and widely used bearing solution designed for applications that require smooth operation, low friction, and effective protection against solid contaminants. As a single-row deep groove ball bearing with double metal shields (ZZ), this bearing is ideal for relatively clean operating environments where higher speed capability and long service life are essential.
The 6304 ZZ bearing is engineered to support high radial loads together with moderate axial loads in both directions, making it a versatile and dependable choice for many industrial and mechanical applications.
Precision Engineering and Shielded Bearing Design
The 6304 ZZ bearing is manufactured with precision-ground inner and outer rings and high-quality steel balls to ensure smooth rotation, reduced vibration, and quiet operation. Its deep groove raceway geometry provides uniform load distribution across the rolling elements, minimizing internal stress, wear, and heat generation during operation.
Equipped with double metal shields on both sides, the bearing is protected against dust and solid particles while retaining lubricant inside the bearing. The non-contact shield design allows higher rotational speeds compared to sealed bearings, ensuring efficient performance and extended service life.
Technical Specifications of 6304 ZZ Ball Bearing
The 6304 ZZ deep groove ball bearing has an inner diameter of 20 mm, an outer diameter of 52 mm, and a width of 15 mm. With an approximate weight of 0.15 kg, the bearing offers a compact yet durable structure suitable for light to medium-duty industrial applications.
In terms of load capacity, the bearing provides a dynamic load rating of 16.2 kN and a static load rating of 7.8 kN, allowing it to operate reliably under significant radial loads while maintaining stable axial load support.
Regarding speed performance, the 6304 ZZ bearing can operate at speeds of up to 13,000 revolutions per minute when grease-lubricated and up to 16,000 revolutions per minute when oil-lubricated. The double metal shielded design supports higher speed operation while ensuring effective contamination protection.
Typical Applications
Thanks to its shielded design, compact size, and stable performance, the 6304 ZZ deep groove ball bearing is commonly used in a wide range of applications, including:
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Electric motors and small generators
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Industrial fans and blowers
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Pumps and compressors
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Gearboxes and light transmission systems
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Agricultural and construction equipment
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General industrial and household machinery
Key Advantages of 6304 ZZ Bearing
The 6304 ZZ ball bearing offers several important advantages that make it a preferred choice in industrial environments. These advantages include effective protection against dust and solid contaminants due to double metal shields, smooth and low-friction operation, suitability for higher rotational speeds, reduced maintenance requirements, reliable load-carrying capability, and long service life under continuous operating conditions. Its standardized dimensions ensure easy installation and global interchangeability.
Conclusion
The 6304 ZZ deep groove ball bearing is a durable, efficient, and cost-effective solution for applications that demand smooth operation, higher speed capability, and dependable contamination protection. With its precise dimensions, balanced load ratings, and double shielded construction, it delivers consistent performance in a wide range of industrial environments. Whether used in new equipment or as a replacement component, the 6304 ZZ bearing provides reliable operation and long-term value.