Deep groove ball bearing NTN 6303LLBC3/5K, Outer diameter: 47 mm | Width: 14 mm | Inner diameter: 17 mm

This NTN deep groove ball bearing combines performance, robustness and protection against contaminants to ensure reliable and durable operation. Thanks to its increased clearance (C3) and its non-contact NBR seals with metal insert (LLB), it provides smooth operation and low friction, making it an ideal choice for applications requiring high speeds and reduced maintenance.

Features :
This deep groove ball bearing has deep raceways on its inner and outer rings, allowing it to support radial and axial loads in both directions. Its increased radial clearance C3 minimizes friction thanks to the larger space between the balls and the raceways, enabling smoother motion, reducing internal stresses, improving energy efficiency and decreasing wear. Fitted with a pressed steel cage, it offers good resistance to shocks and variable loads. Its seals form an effective barrier against contaminants and ensure good lubricant retention. Due to their non-contact design, they limit resistance to motion and heat generation, thereby allowing high speeds while improving energy efficiency and bearing durability. It is lubricated with Kyodo Yushi Multemp DRL grease, a biodegradable solution that provides effective protection and extended service life, even in demanding operating environments.

Maintenance :
This bearing requires only limited maintenance thanks to its optimized design. The non-contact seals prevent external contamination and preserve internal lubrication, thus reducing maintenance interventions. Regular inspections are recommended to monitor noise, vibration and temperature in order to detect any potential anomalies.

Sealing :
This bearing is equipped with non-contact NBR seals with metal insert (LLB), which form an effective barrier against dust and solid particles while limiting moisture retention. Although they are not completely liquid-tight, they outperform metal shields in terms of lubricant retention.

Brand information :
NTN is a recognized global leader in bearings and mechanical solutions, offering innovative products to optimize the performance of industrial equipment. Present on five continents, with 76 production sites and 97 sales offices, NTN supports its customers across various sectors such as automotive, aerospace, energy and heavy industry. Thanks to its advanced technical expertise and culture of innovation, the company develops high-precision bearings suited to the most demanding conditions, aimed at improving machine durability and efficiency.

Key Benefits :
- Reduced internal friction thanks to the C3 clearance, promoting better energy efficiency and high rotational speed ;
- Effective protection against contamination thanks to the non-contact seals, extending product life ;
- Reduced maintenance due to optimized lubrication and good lubricant retention ;
- Resistance to radial and axial loads, ensuring increased stability even under variable stresses ;
- Low noise level and minimized vibrations for quiet and smooth operation.

Applications :
This deep groove ball bearing is suitable for a wide range of industrial applications requiring effective protection against contaminants and the ability to handle combined loads. It is commonly used in electric motors, pumps and industrial fans, where its low friction and durability extend equipment life. It is also employed in conveyors and material handling systems, providing reliable performance in dusty environments. In the food and marine industries, it offers moderate protection against moisture and impurities. Finally, it is ideal for household appliances and agricultural machinery, ensuring stable operation under demanding conditions.