NTN NJ206EAT2XC3 CYLINDRICAL ROLLER BEARING

Suited to high radial loads and for use in floating or fixed bearing arrangements, cylindrical roller bearings offer low friction and good rigidity. They are available in a wide range of designs and variants tailored to specific requirements: heat, axial displacement, operating noise, speed, capacity, etc.

These NTN cylindrical roller bearings support high radial loads, provide axial retention in one direction and feature a separable design that facilitates mounting. They are characterised by a polyamide cage and increased internal radial clearance.

Explanation :
• NJ : single-row cylindrical roller bearing with two shoulders on the outer ring and one shoulder on the inner ring; supports an axial load in one direction
• EA : ULTAGE™ design with increased load capacity thanks to optimized internal geometry, without increasing external dimensions
• T2X : polyamide cage
• C3 : internal radial clearance greater than normal clearance

Features :
The cylindrical roller design allows support of high radial loads thanks to the line contact between the rolling elements and the raceways. Type NJ, with two shoulders on the outer ring and one shoulder on the inner ring, provides axial retention of the shaft in one direction while maintaining a high radial load capacity, making it a high-performance solution for demanding applications. 

The separable design allows the rings to be disassembled from each other, which facilitates assembly and disassembly operations, including when tight fits are required.

The ULTAGE™ range stands out for its optimized internal geometry, which further increases load capacity and extends service life while enabling compact designs. The T2X polyamide cage combines lightness, strength and resistance to high temperatures. Finally, the C3 internal radial clearance, greater than normal, improves reliability in applications subject to tight fits, heavy loads or significant thermal variations.

Maintenance :
Appropriate lubrication for the operating conditions helps limit wear of the rolling elements and the raceways. Regular checks of noise, vibration and temperature allow early detection of bearing or lubrication degradation.

The cleanliness of the lubricant and the assembly environment must be maintained to avoid the introduction of contaminants. Particular care is recommended when the polyamide cage operates at high temperature with oils containing sulfur- or phosphorus-based extreme pressure additives, as these conditions can accelerate material degradation.

Key advantages :
• Supports high radial loads thanks to line contact of the rollers
• Provides axial retention of the shaft in one direction
• Facilitates assembly and disassembly operations thanks to the separable design
• Helps compensate for the effects of tight fits and thermal expansion thanks to C3 clearance
• Enables compact assemblies due to the increased load capacity of the ULTAGE™ range

Applications :
NJ.EA.T2X.C3 cylindrical roller bearings are designed to support high radial loads while ensuring axial positioning of the shaft in a single direction. Their design makes them particularly suitable for applications requiring high load capacity, high rotational speeds and good resistance to thermal stresses.

Common applications :
• gearboxes and reducers ;
• mechanical transmissions ;
• electric motors ;
• vibrating screens ;
• rolling mills ;
• paper machines.

This design is particularly suitable for shafts subjected to tight fits or large thermal variations. The C3 radial clearance compensates for the reduction in internal clearance due to mounting and in-service expansion. The NJ bearing can be used alone to provide axial retention in one direction, or mounted in pairs to allow axial positioning in both directions.