The 6308 ZZ deep groove ball bearing is a robust and dependable bearing solution designed for industrial applications that require smooth operation, reliable load capacity, and effective protection against solid contaminants. As a single-row deep groove ball bearing with double metal shields (ZZ), this bearing is well suited for relatively clean operating environments where higher speed capability and long service life are essential.
The 6308 ZZ bearing is engineered to handle high radial loads together with moderate axial loads in both directions, making it a versatile choice for a wide range of industrial machinery and mechanical systems.
Precision Engineering and Shielded Bearing Design
The 6308 ZZ bearing is manufactured with precision-ground inner and outer rings combined with high-quality steel balls to ensure smooth rotation, low friction, and reduced vibration. Its deep groove raceway geometry enables uniform load distribution across the rolling elements, minimizing internal stress, wear, and heat generation during operation.
The bearing is equipped with double metal shields on both sides, which protect the internal components from 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 6308 ZZ Ball Bearing
The 6308 ZZ deep groove ball bearing has an inner diameter of 40 mm, an outer diameter of 90 mm, and a width of 23 mm. With an approximate weight of 0.63 kg, the bearing provides a strong and durable construction suitable for medium to heavy-duty industrial applications.
In terms of load capacity, the bearing offers a dynamic load rating of 41.2 kN and a static load rating of 19.1 kN, enabling reliable operation under substantial radial loads while maintaining stable axial load support.
Regarding speed capability, the 6308 ZZ bearing can operate at speeds of up to 8,200 revolutions per minute when grease-lubricated and up to 9,900 revolutions per minute when oil-lubricated. These speed ratings make it suitable for applications that require consistent performance at moderate to high rotational speeds.
Typical Applications
Thanks to its shielded design, high load capacity, and stable performance, the 6308 ZZ deep groove ball bearing is commonly used in various industrial and mechanical applications, including:
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Electric motors and industrial generators
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Gearboxes and transmission systems
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Industrial pumps, fans, and compressors
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Conveyor systems and material handling equipment
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Agricultural and construction machinery
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General industrial equipment
Key Advantages of 6308 ZZ Bearing
The 6308 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 radial and axial load-carrying capability, and long service life under continuous operating conditions. Its standardized dimensions ensure easy installation and global interchangeability.
Conclusion
The 6308 ZZ deep groove ball bearing is a durable, efficient, and cost-effective solution for applications that demand high load capacity, smooth operation, and dependable contamination protection. With its precise dimensions, balanced load ratings, and double shielded construction, it delivers consistent performance in demanding industrial environments. Whether used in new equipment or as a replacement component, the 6308 ZZ bearing ensures reliable operation and long-term value.