The BARKER 300 SZZ is engineered for critical applications demanding high rotational speeds and robust protection against contaminants. As a premium Deep Groove Ball Bearing (DGBB), the 300 SZZ series features an optimized internal geometry and C3 internal clearance, maximizing efficiency and minimizing internal stresses during operation. Its high-grade steel construction ensures superior fatigue life, while the double non-contact metallic shields (SZZ designation) retain factory lubricant for life while effectively deflecting coarse debris, making it ideal for dusty or dry environments such as agricultural machinery, large electrical motors, and industrial fans where reliability and minimal maintenance are paramount.
This specific configuration (40mm bore) provides a superior balance of load capacity (Cr: 45.0 kN) and operational speed, making it a drop-in upgrade for standard 6308 applications requiring improved longevity. The non-contact SZZ shields reduce friction compared to rubber seals (2RS), leading to lower operational temperatures and improved energy efficiency—a critical factor in reducing Total Cost of Ownership (TCO). BARKER's strict manufacturing tolerances guarantee precise shaft alignment and reduced vibration, ensuring smooth, quiet operation necessary for sensitive processing equipment and high-uptime production lines.
Key Features
SZZ Non-Contact Metallic Shields: Provides superior protection against coarse contaminants while minimizing rotational friction and heat generation.
Optimized C3 Internal Clearance: Ideal for moderate speed applications or installations where temperature differential requires slight expansion tolerance.
High Dynamic Load Rating (Cr 45.0 kN): Designed to handle significant radial and axial forces common in pump and gearbox applications.
Pre-lubricated for Life: Factory-filled with high-performance lithium-soap grease, reducing initial installation effort and long-term maintenance costs.
Precision-Ground Raceways: Ensures low noise, minimal vibration, and extended service life even under continuous high-duty cycles.
