Deep groove ball bearing SNR 6309NREE, Outer diameter: 100 mm | Width: 25 mm | Inner diameter: 45 mm

This SNR deep groove ball bearing has been specifically designed for wet, dusty or splash-prone environments. Thanks to the double sealing and its robust construction, it ensures stable and reliable operation. It is the ideal solution for users seeking a durable, maintenance-free bearing for applications with moderate speeds and is characterized by a high degree of protection, good load-carrying capacity and easy integration into a wide range of mechanisms.

Features:
The single-row ball bearing has a lightweight yet durable stamped steel cage. It is equipped with a standard radial internal clearance (CN) that provides good alignment of the rolling elements and smooth running. The double-sided seals offer excellent protection against contamination, but due to their permanent contact with the inner ring they cause a slight reduction of the maximum permissible speed. The groove for a retaining ring on the outer ring face, combined with the factory-fitted retaining ring, facilitates axial mounting in the housing. The bearing primarily takes radial loads but can also tolerate moderate axial forces in both directions. Its design ensures uniform load distribution and high stability at moderate speeds.

Maintenance:
This model is factory-lubricated with a high-performance grease. Additional re-lubrication is not required under normal operating conditions. The contacting seals ensure reliable grease retention and prevent particle ingress. This makes the bearing completely maintenance-free and ideal for hard-to-reach equipment where maintenance interventions should be minimized. To maintain full performance, the temperature and load limits should be observed.

Sealing:
The bearing is fitted on both sides with NBR rubber lip seals. These provide effective protection against dust, water, oils and greases. The permanent contact between the seal and the inner ring forms a reliable barrier against solid and liquid contaminants. This significantly extends service life, even under adverse operating conditions. At the same time, this seal type causes a slightly higher frictional resistance, which somewhat limits the permissible speed compared with open or centrifugal-sealed designs.

Brand information:
SNR is a brand of the NTN Group and is regarded as a specialist in rolling bearing and drive solutions. With over 100 years of experience, the company develops innovative products for the industrial, automotive and rail sectors. Quality, reliability and innovation are the focus. Thanks to controlled European manufacturing, SNR offers high-performance, robust products that meet the highest technical requirements.

Strengths:
• Increased protection against water, dust and greases thanks to double-sided NBR seals
• Long-term lubrication – no maintenance required under normal operating conditions
• Good radial load capacity with tolerance of axial forces in both directions
• Easy axial mounting thanks to integrated retaining ring groove
• Stable running due to standardized radial internal clearance
• Quiet operation with low vibration level
• High corrosion resistance in humid environments

Applications:
This single-row deep groove ball bearing is particularly suitable for conveyor systems, carrying rollers or partly enclosed units. It can be easily integrated into systems where dust and moisture protection are critical. Ideal at moderate speeds, it is recommended for industrial environments with splash water exposure or limited maintenance capabilities. Thanks to its compact design it is versatile, especially where reliability and easy handling are required.