Deep groove ball bearing SNR 6308ZZC4, Outer diameter: 90 mm | Width: 23 mm | Inner diameter: 40 mm

The SNR deep groove ball bearing impresses with high reliability and excellent performance. Thanks to its low friction torque, it is ideal for applications with very high speeds. The double-sided metal shields provide effective protection in moderately stressed environments. In addition, the radial clearance C4 offers high tolerance to thermal expansions. This makes this bearing particularly suitable for industrial applications where stability, smooth running and durability are required.

Features:
This single-row ball bearing is characterized by a robust design with a durable stamped steel cage. It provides high radial load capacity and can accommodate limited axial loads in both directions. The larger internal clearance (C4) reduces stresses caused by temperature differences and makes it ideal for environments with fluctuating temperatures. The metal shields (deflecting, non-contact) effectively protect the raceway and help keep the friction torque low even at the highest speeds. The bearing ensures smooth and stable running, even under moderate mechanical loads.

Maintenance:
This model is factory-lubricated for life and does not require re-lubrication under normal operating conditions. Its maintenance-free nature makes it the optimal solution for hard-to-reach installation locations. In clean environments, no special maintenance is necessary. However, in the presence of moisture, excessive heat or dirt particles, regular inspection is recommended. This allows early detection of signs of wear, such as unusual noises, heat generation or increased bearing clearance.

Sealing:
Sealing is achieved by two metal cover discs mounted on the outer ring. These elements provide non-contact protection against solid contaminants. A V-shaped groove on the inner ring acts as an effective labyrinth sealing system that prevents lubricant loss while minimizing friction torque. However, this version is not sealed against liquids or moisture and is therefore not suitable for highly corrosive environments. The sealing is ideal for dry or moderately stressed operating areas.

Brand information:
SNR is a brand of the NTN Group, a leading company in rolling bearing technology with over 100 years of experience. SNR stands for technological precision, innovation and reliability. The brand develops tailor-made solutions for a wide range of industries such as the automotive industry, aerospace, food processing and general mechanical engineering. Thanks to an international network in numerous countries, SNR offers products that increase operational safety and optimize industrial processes.

Strengths:
• Low friction torque for high energy efficiency
• Optimized for very high speeds
• C4 clearance compensates thermal expansions
• Effective protection against solid particles thanks to metallic deflectors
• Quiet, maintenance-free operation under standard conditions
• High radial load capacity and long-lasting operational reliability

Applications:
This product is ideal for fans and electric motors with constant speed as well as for industrial gear motors. It is also recommended for roller conveyors in low-dust environments and for automated systems with small mechanical drives. Typical application areas include professional household appliance manufacturing, packaging machines and logistics conveyor systems.