The 6309 ZZ deep groove ball bearing is a heavy-duty and dependable bearing solution designed for industrial applications that require high load capacity, smooth operation, and protection against solid contaminants. As a single-row deep groove ball bearing with double metal shields (ZZ), it is well suited for relatively clean environments where higher speed capability and long service life are essential.
The 6309 ZZ bearing is engineered to support high radial loads along 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 6309 ZZ bearing is manufactured using 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 allows uniform load distribution across the rolling elements, minimizing wear, internal stress, and heat generation during operation.
The bearing is equipped with double metal shields on both sides, which protect against dust and solid particles while retaining lubricant inside the bearing. The non-contact shield design enables higher operating speeds compared to sealed bearings, while still providing reliable contamination protection and extended service life.
Technical Specifications of 6309 ZZ Ball Bearing
The 6309 ZZ deep groove ball bearing has an inner diameter of 45 mm, an outer diameter of 100 mm, and a width of 25 mm. With an approximate weight of 0.83 kg, the bearing offers a strong and durable construction suitable for medium to heavy-duty industrial applications.
In terms of load capacity, the bearing provides a dynamic load rating of 53.7 kN and a static load rating of 31.6 kN, enabling it to operate reliably under substantial radial loads while maintaining stable axial load support.
Regarding speed capability, the 6309 ZZ bearing can operate at speeds of up to 6,700 revolutions per minute when grease-lubricated and up to 8,100 revolutions per minute when oil-lubricated. These speed limits make it suitable for applications requiring consistent performance at moderate rotational speeds.
Typical Applications
Thanks to its shielded design, high load capacity, and stable performance, the 6309 ZZ deep groove ball bearing is widely 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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Heavy-duty industrial equipment
Key Advantages of 6309 ZZ Bearing
The 6309 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 6309 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, strong 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 6309 ZZ bearing provides reliable operation and excellent long-term value.