CYLINDRICAL ROLLER BEARINGS NTN-SNR

Product catalog summary

Introduction
NTN-SNR is a leader in managing product life cycles, offering proximity and commitment to its clients. The company designs solutions for demanding applications in sectors like railways, robotics, and textiles, focusing on reliability and performance.

Product Specifications
Cylindrical roller bearings are designed to handle high radial loads and are available in 1, 2, or 4 rows with various cage designs made from steel, brass, or polyamide. The range includes dimensions up to 500mm inner diameter and specific series like N, NU, NJ, NUp, NNU, and NN. Special series without cages include SL01, SL02, SL04, SL18, and SL19. Key suffixes include E for optimized capacity and G15/T2X for polyamide cages.

Design and Performance
NTN-SNR has optimized the profiles of cylindrical rollers to reduce edge effects and increase service life, even with misalignment. The superfinishing process achieves surface roughness in nanometres, reducing friction and improving torque. This process also enhances oil film formation, preventing metal contact and spalling.

Cage Types
Four main cage types are available: polyamide and brass in two parts for standard bearings, and steel and massive brass for heavily loaded bearings. The choice depends on the application environment and constraints.

Applications and Expertise
NTN-SNR has over 40 years of experience in railway applications, ensuring zero defects through extensive testing. Other notable applications include high-precision spindle bearings for machine tools, roller systems for textiles, sintering machines for steel, and epicycloid reducers for transmissions.

Conclusion
NTN-SNR's cylindrical roller bearings are engineered for high performance and reliability across various demanding applications, supported by extensive testing and expertise.

Catalog excerpts

CYLINDRICAL ROLLER BEARINGS designed to go further

Open the catalog to page 1

NTN-SNR the strength of a group As expert in managing the life cycle of a product, NTN in Europe is characterised by the proximity and commitment of its teams. We anticipate development projects on your strategic markets. Our engineers design with you solutions adapted to the most demanding applications, in fields such as railways, robotics or textile. NTN-SNR leads you towards reliability and performance. The product Designed to withstand high radial loads, our cylindrical roller bearings are available in 1, 2 or 4 rows, with crossed, high precision or complement rollers. 4 cage designs are...

Open the catalog to page 2

THE CONTROL OF OUR SURFACE CONDITIONS The finishing process with lapping rod formerly known as «Superfinishing» enables surface condition values to be obtained (roughness Ra) of a dozen nanometres (in comparison, a standard turning process produces a roughness of 1 to 2 μm i.e. 1000 to 2000 nanometres). Such a performance lowers the André Mulatier Superfinishing Process Expert friction levels to a minimum and thus improves the torque. «We have a real expertise in superfinishing processes and we provide equipment for these with almost 400 dedicated machines. To better understand the interest of...

Open the catalog to page 3

OUR EXPERIENCE IN RAILWAYS «For over 40 years, our cylindrical roller bearings have been equipping the axles of passenger and freight trains. The axle is a safety device on which a zero defect is mandatory. For this, we test our designs on the equivalent of 600,000 km in our COFRAC certified test centre. Once in production, we check all bearings (dimensions, material testing by ultrasound and magnetic-particle inspection) to ensure the complete reliability of our products.» Machine tools: MAZAK high-precision spindle bearings Textile: STÄUBLI shed forming system roller Steel: ThyssenKrupp Steel...

Open the catalog to page 4

All NTN Europe catalogs and technical brochures

Archived catalogs

CYLINDRICAL ROLLER BEARINGS
5 Pages