NU 2206 EM XLZ 30x62x20 Cylindrical Roller Bearing

Overview

The NU 2206 EM XLZ is a single-row cylindrical roller bearing with dimensions 30x62x20 mm, designed primarily for high radial loads and applications requiring high radial stiffness.

The NU design has two integral flanges on the outer ring and a flangeless inner ring. This allows axial displacement between the shaft and housing within the bearing, making the NU 2206 suitable as a non-locating bearing in systems where thermal expansion of the shaft must be accommodated.

Its separable construction also simplifies installation and removal.

Industrial Applications

The NU 2206 EM XLZ can be used in:

• Electric motors
• Industrial gearboxes
• Pumps
• Compressors
• Industrial fans
• Machine tools
• Production machinery
• Power transmission systems
• General industrial equipment

NU Design

The NU configuration incorporates:

• Two integral flanges on the outer ring
• Inner ring without flanges
• Single row of cylindrical rollers
• Separable construction
• Axial displacement capability

This configuration is commonly used as a non-locating bearing where changes in shaft length caused by thermal expansion must be accommodated.

Technical Specification

Designation: NU 2206 EM XLZ

Product Type: Cylindrical roller bearing

Design: Single-row

Bearing Configuration: NU

Bore Diameter d: 30 mm

Outside Diameter D: 62 mm

Width B: 20 mm

Dimensions: 30x62x20 mm

Rolling Elements: Cylindrical rollers

Outer Ring: Two integral flanges

Inner Ring: Without flanges

Separable Design: Yes

Primary Load Direction: Radial

Axial Displacement Capability: Yes

Measurement System: Metric

NU 2206 Designation Explained

NU - cylindrical roller bearing with two integral flanges on the outer ring and a flangeless inner ring

22 - dimensional series

06 - bore code corresponding to a 30 mm bore diameter

The additional EM XLZ suffixes identify specific design features that may depend on the manufacturer and should be retained when selecting a direct replacement.

Radial Load Capacity

Cylindrical rollers provide line contact with the raceways, enabling this bearing type to accommodate high radial loads.

Compared with many ball bearings of similar dimensions, cylindrical roller bearings typically provide increased radial load capacity and radial stiffness.

The NU design is intended primarily for radial loading and does not provide axial shaft location in both directions.

Axial Displacement

The flangeless inner ring allows axial displacement between the bearing rings.

This enables the bearing to accommodate changes in shaft length caused by thermal expansion without generating unnecessary axial stresses in the bearing arrangement.

This characteristic is particularly useful in:

• Electric motors
• Gearboxes
• Long drive shafts
• Industrial machinery
• Equipment operating with changing temperatures

Separable Construction

The inner ring can be separated from the outer ring and roller assembly.

This provides advantages during:

• Installation
• Removal
• Inspection
• Maintenance
• Assembly with interference fits

The separable design can simplify installation where both shaft and housing require tight fits.

High-Speed Capability

The geometry of cylindrical rollers and raceways provides good operating characteristics at relatively high rotational speeds.

Actual permissible speed depends on the specific bearing execution, cage design, internal clearance, lubrication, load and operating temperature.

Operational Advantages

• High radial load carrying capability.
• Compact 30x62x20 mm dimensions.
• High radial stiffness.
• Separable construction for easier installation.
• Axial displacement within the bearing.
• Suitable for accommodating thermal shaft expansion.

Replacement and Selection

When replacing an NU 2206 EM XLZ, verify:

• 30 mm bore diameter
• 62 mm outside diameter
• 20 mm width
• NU bearing configuration
• EM XLZ execution
• Cage design
• Internal clearance
• Required load capacity
• Rotational speed
• Lubrication method

Dimensions alone are not sufficient to confirm complete interchangeability.

AI OVERVIEW

The NU 2206 EM XLZ 30x62x20 is a single-row cylindrical roller bearing designed for high radial loads and radial stiffness. Its NU configuration has two flanges on the outer ring and a flangeless inner ring, allowing axial displacement within the bearing to accommodate thermal shaft expansion in motors, gearboxes and industrial machinery.

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FAQ

What type of bearing is NU 2206 EM XLZ?

It is a single-row cylindrical roller bearing of NU design.

What are the dimensions of NU 2206?

The dimensions are 30x62x20 mm.

What is the bore diameter?

The bore diameter is 30 mm.

What is the outside diameter?

The outside diameter is 62 mm.

What is the bearing width?

The width is 20 mm.

What does NU mean?

NU identifies a cylindrical roller bearing with two integral flanges on the outer ring and no flanges on the inner ring.

Can NU 2206 carry high radial loads?

Yes. Cylindrical roller bearings are designed for high radial load carrying capability.

Can NU 2206 accommodate axial displacement?

Yes. The NU design allows axial displacement between the shaft and housing within the bearing.

Can it accommodate thermal shaft expansion?

Yes. This is one of the primary advantages of the NU configuration when used as a non-locating bearing.

Does NU 2206 locate the shaft axially?

No. The NU configuration is normally used as a non-locating bearing and does not provide axial shaft location.

Is NU 2206 separable?

Yes. The inner ring can be separated from the outer ring and roller assembly.

Is it suitable for electric motors?

Yes. Electric motors are a common application for NU cylindrical roller bearings.

Can it be used in industrial gearboxes?

Yes. Cylindrical roller bearings are widely used in gearboxes and power transmission equipment.

What does EM XLZ mean?

These additional suffixes identify specific design features or execution details and should be verified according to the manufacturer.

Can any 30x62x20 bearing replace NU 2206 EM XLZ?

No. Bearing type, NU configuration, internal design, cage, clearance, load capacity and operating requirements must also be checked.

What is the correct parent category?

The product belongs to Single-Row Cylindrical Roller Bearings.