The 6306 ZZ deep groove ball bearing is a robust and widely used bearing solution designed for applications that require stable performance, 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 industrial environments where cleanliness, higher speed capability, and long service life are essential.
The 6306 ZZ bearing is engineered to accommodate high radial loads together with moderate axial loads in both directions, making it a versatile and dependable choice for a wide range of industrial and mechanical systems.
Precision Engineering and Shielded Bearing Design
The 6306 ZZ bearing is manufactured using precision-ground inner and outer rings combined with 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.
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. Since the metal shields are non-contact, they allow higher rotational speeds compared to sealed bearings, resulting in efficient performance and extended service life.
Technical Specifications of 6306 ZZ Ball Bearing
The 6306 ZZ deep groove ball bearing has an inner diameter of 30 mm, an outer diameter of 72 mm, and a width of 19 mm. With an approximate weight of 0.33 kg, the bearing offers a strong and well-balanced structure suitable for medium-duty industrial applications.
In terms of load capacity, the bearing provides a dynamic load rating of 29.1 kN and a static load rating of 15.8 kN, allowing it to operate reliably under substantial radial loads while maintaining stable axial load support.
Regarding speed performance, the 6306 ZZ bearing can operate at speeds of up to 9,400 revolutions per minute when grease-lubricated and up to 11,000 revolutions per minute when oil-lubricated. The double metal shielded design supports higher speed operation compared to sealed bearings while still offering effective contamination protection.
Typical Applications
Thanks to its shielded design, stable performance, and solid load-carrying capacity, the 6306 ZZ deep groove ball bearing is commonly used in a wide range of industrial and mechanical applications, including:
-
Electric motors and industrial generators
-
Gearboxes and transmission systems
-
Industrial fans and blowers
-
Pumps and compressors
-
Conveyor systems and material handling equipment
-
General industrial machinery
Key Advantages of 6306 ZZ Bearing
The 6306 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 provided by double metal shields, smooth and low-friction operation, suitability for higher rotational speeds compared to sealed bearings, 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 6306 ZZ deep groove ball bearing is a durable, efficient, and cost-effective solution for applications that demand stable operation, higher speed capability, and dependable contamination protection. With its precise dimensions, strong 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 6306 ZZ bearing provides reliable operation and long-term value.