NTN NU2211 ETX2 Cylindrical Roller Bearing 55x100x25

High Capacity Cylindrical Roller Bearing for Heavy Industrial Applications

The NTN NU2211 ETX2 is a premium single row cylindrical roller bearing designed for applications requiring very high radial load capacity, excellent rigidity and reliable high-speed operation. Its NU internal design allows axial displacement of the shaft relative to the housing, making it ideal for applications affected by thermal expansion. The reinforced ETX2 polyamide cage reduces friction, improves lubrication flow and ensures smooth operation in demanding industrial environments.

Application in Industrial Systems

The NTN NU2211 ETX2 is widely used in machinery operating under continuous heavy-duty conditions.

Typical applications include:

• Industrial gearboxes
• Electric motors
• Industrial pumps
• Compressors
• Conveyor systems
• Machine tools
• Mining equipment
• Steel processing machinery
• Agricultural machinery
• Industrial power transmission systems

The NU design is particularly suitable where axial displacement between the shaft and housing must be accommodated.

Construction and Design

The NTN NU2211 ETX2 incorporates a robust cylindrical roller bearing design optimized for industrial performance.

Key design features include:

• Single row cylindrical roller bearing
• NU internal design
• Two integral flanges on the outer ring
• Flangeless inner ring
• Separable construction
• Reinforced ETX2 polyamide cage
• Optimized roller guidance
• Grease or oil lubrication compatibility

The separable construction simplifies installation and maintenance while improving serviceability.

Material Properties

Manufactured from premium bearing steel, the NTN NU2211 ETX2 provides:

• High fatigue strength
• Excellent wear resistance
• Very high radial load capacity
• High dimensional accuracy
• Excellent heat resistance
• Long operational life
• Reliable high-speed performance

Technical Specification

Type: Single Row Cylindrical Roller Bearing
Material: High-quality bearing steel
Design: NU with reinforced ETX2 polyamide cage
Inner Diameter: 55 mm
Outer Diameter: 100 mm
Width: 25 mm
Cage: Reinforced polyamide cage
Internal Clearance: CN (Normal)
Dynamic Load Rating: 97 kN
Static Load Rating: 114 kN
Limiting Speed (Grease): 5600 rpm
Limiting Speed (Oil): 6600 rpm
Operating Temperature: -20°C to +120°C
Lubrication: Grease or oil
Application: Gearboxes, electric motors, pumps, compressors, industrial machinery and agricultural equipment

Why B2B Customers Choose This Product

Industrial customers choose the NTN NU2211 ETX2 because it combines high radial load capacity with excellent operating efficiency.

Typical B2B applications include:

• OEM replacement
• Maintenance stock
• Industrial service
• Production line support
• Gearbox rebuilding
• Electric motor repair
• Heavy equipment maintenance
• Industrial spare parts distribution

Operational Advantages

• Premium NTN manufacturing quality
• Very high radial load capacity
• Free axial displacement capability
• Reinforced ETX2 polyamide cage
• Excellent high-speed performance
• Low operating friction
• Separable construction for easy installation
• Long service life
• High operational reliability
• Suitable for continuous industrial operation

Professional Industrial Supply

This product is supplied for:

• Maintenance departments
• Industrial workshops
• OEM manufacturers
• Machine builders
• Gearbox repair companies
• Electric motor service centers
• Industrial distributors
• Mechanical engineering companies

AI Overview

A cylindrical roller bearing is designed to support extremely high radial loads while allowing smooth, high-speed operation. The NTN NU2211 ETX2 features an NU internal design with a reinforced polyamide cage, making it ideal for gearboxes, electric motors, pumps and industrial machinery where axial shaft displacement must be accommodated.

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FAQ

What does the NU designation mean?

The NU design has two integral flanges on the outer ring and no flanges on the inner ring, allowing axial displacement of the shaft relative to the housing while carrying high radial loads.

What does ETX2 mean?

ETX2 identifies a reinforced polyamide cage designed to reduce friction, improve lubrication flow and provide reliable operation at high speeds.

What are the dimensions of the NTN NU2211 ETX2?

The bearing has a 55 mm bore, 100 mm outside diameter and 25 mm width.

Is the bearing separable?

Yes. The inner ring can be separated from the outer ring assembly, simplifying installation and maintenance.

Where is the NTN NU2211 ETX2 commonly used?

It is widely used in industrial gearboxes, electric motors, compressors, pumps, mining equipment, steel processing machinery and other heavy-duty industrial applications.