Bearing NJ 311 URB



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Product detailed description
bearing NJ 311 URB – High-Performance Cylindrical Roller Bearing
The bearing NJ 311 URB is a robust and reliable cylindrical roller bearing designed to handle heavy radial loads and provide excellent operational performance in various industrial applications. Engineered with precision, this bearing is ideal for use in electric motors, gearboxes, machine tools, and other machinery requiring enhanced durability and load capacity.
Featuring a single-row design with a solid outer ring and a two-rib inner ring, the bearing NJ 311 URB offers increased axial guidance on one side, making it suitable for applications with moderate axial loads in one direction. Its cylindrical rollers ensure smooth rotation and reduce friction, contributing to improved efficiency and longer service life.
Key Features and Benefits
- Design: Single row cylindrical roller bearing with a two-rib inner ring and a ribbed outer ring
- Load Capacity: High radial load carrying capability with moderate axial load support on one side
- Durability: Constructed from high-quality steel for resistance to wear and extended operational longevity
- Precision: Manufactured to stringent tolerances ensuring smooth operation and minimal vibration
- Versatility: Suitable for a wide range of industrial uses including motors, pumps, and industrial gearboxes
Dimensions of bearing NJ 311 URB
- Inner Diameter (d): 55 mm
- Outer Diameter (D): 120 mm
- Width (B): 29 mm
The bearing NJ 311 URB is designed for easy installation and maintenance, ensuring minimal downtime and optimal performance. Its robust construction and precise engineering make it a dependable choice for demanding environments where reliability and efficiency are paramount.

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URB Bearings and Transmission Technology Manufacturer
About URB
URB is a renowned manufacturer specializing in high-quality bearings and advanced transmission technology solutions. With decades of experience in the industry, URB has established itself as a trusted name for providing durable, reliable, and innovative products that cater to diverse industrial applications.
History of URB
Founded several decades ago, URB has continuously evolved to meet the growing demands of the mechanical and automotive industries. The company began as a small-scale bearing manufacturer and has since expanded its capabilities, integrating cutting-edge transmission technologies to serve both domestic and international markets.
Product Range
URB offers a comprehensive selection of products that focus on precision and performance. Their product portfolio includes:
- Rolling Bearings: Ball bearings, roller bearings, and needle bearings suitable for various mechanical applications.
- Transmission Components: Gears, gearboxes, and power transmission units designed for optimal torque and speed management.
- Customized Solutions: Tailor-made bearing assemblies and transmission units engineered to meet specific customer requirements.
- Sealing and Lubrication Systems: Integrated solutions that enhance bearing life and operational efficiency.
Main Focus and Technologies
URB is committed to innovation in bearing design and transmission technology. By leveraging advanced materials, precision manufacturing, and rigorous quality control processes, the company ensures its products deliver exceptional durability and performance under demanding conditions. URB places a strong emphasis on reducing friction, minimizing wear, and improving energy efficiency in all its components.
Application Areas
The diverse URB product portfolio serves multiple industries and application areas, including:
- Automotive and Transportation: Bearings and transmissions for cars, trucks, and heavy vehicles.
- Industrial Machinery: Solutions for manufacturing equipment, conveyors, and automation systems.
- Aerospace: High-precision components designed for aerospace mechanisms and devices.
- Renewable Energy: Bearings and transmission units for wind turbines and other green energy technologies.
- Construction and Agriculture: Robust products for heavy-duty machinery and agricultural equipment.
Company Headquarters
URB is headquartered in Germany, a country known for engineering excellence and advanced manufacturing technologies. The central office serves as the hub for research and development, production, and global distribution, ensuring URB maintains the highest quality standards and delivers superior products worldwide.