FAG NU226-E-M1-C3 130x230x40 mm - Single-Row Cylindrical Roller Bearing

FAG NU226-E-M1-C3 130x230x40 mm - Single-Row Cylindrical Roller Bearing

FAG NU226-E-M1-C3 is a single-row cylindrical roller bearing from Schaeffler/FAG, measuring 130x230x40 mm. It features the NU design, optimized internal design E, a solid brass M1 cage and C3 radial internal clearance greater than Normal. The NU configuration has two integral flanges on the outer ring and a flangeless inner ring, allowing axial displacement between the shaft and housing within the bearing.

Technical data - FAG NU226-E-M1-C3

What does FAG NU226-E-M1-C3 mean?

The complete designation identifies the bearing size, internal design, cage execution and radial internal clearance.

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

226 - identifies the bearing series and size.

Bore code 26 corresponds to:

26 x 5 = 130 mm

E - optimized internal design.

M1 - solid brass cage, guided on the rolling elements.

C3 - radial internal clearance greater than Normal.

The complete designation:

NU226-E-M1-C3

should be retained when identifying or selecting a replacement bearing.

FAG NU226-E-M1-C3 dimensions

The principal mounting dimensions are:

130x230x40 mm

where:

• d = 130 mm - bore diameter

• D = 230 mm - outside diameter

• B = 40 mm - bearing width

Matching dimensions alone do not guarantee interchangeability.

For this bearing, the NU design, E execution, M1 cage and C3 radial internal clearance are also important.

NU design - how is the bearing constructed?

FAG NU226-E-M1-C3 is a single-row cylindrical roller bearing.

In the NU design:

• the outer ring has two integral flanges

• the inner ring has no flanges

• one row of cylindrical rollers operates between the rings

This geometry permits axial displacement between the bearing rings.

That is one of the most important functional characteristics of the NU design.

Why does an NU bearing permit axial displacement?

The inner ring of an NU bearing has no flanges restricting axial movement of the roller and cage assembly relative to the inner ring.

As a result, the shaft and housing can move axially relative to one another within the bearing.

This allows the bearing arrangement to accommodate changes in shaft length caused, for example, by thermal expansion.

NU cylindrical roller bearings are therefore commonly used as non-locating bearings in appropriately designed bearing arrangements.

Radial load capability

Cylindrical rollers have line contact with the raceways.

This geometry makes cylindrical roller bearings particularly suitable for carrying high radial loads.

FAG NU226-E-M1-C3 is designed primarily for:

radial loads

The NU configuration is not intended to provide conventional axial location of the shaft.

Axial location should be provided by another suitable component or bearing within the complete bearing arrangement.

What does E mean?

The suffix E identifies an optimized internal bearing design.

It forms part of the complete FAG bearing designation and should not be ignored when comparing different NU226 executions.

The designation:

NU226-E-M1-C3

provides more precise product identification than:

NU226

alone.

What does M1 mean?

The suffix M1 identifies the cage execution.

In FAG nomenclature, M1 specifies a:

solid brass cage guided on the rolling elements

The cage:

• maintains correct spacing between the rollers

• guides the rolling elements

• prevents direct contact between adjacent rollers

• supports stable operation of the rolling element set

M1 is an important part of the bearing specification and should be checked when selecting an equivalent bearing.

What does C3 mean?

The suffix C3 means:

radial internal clearance greater than Normal

C3 is not a quality or precision grade.

It specifies a defined range of initial radial internal clearance before the bearing is mounted.

A simplified clearance sequence is:

C2 - smaller than Normal

Normal - normal radial internal clearance

C3 - greater than Normal

C4 - greater than C3

A C3 bearing is therefore not automatically "better" than a Normal-clearance bearing. It is a different internal clearance execution intended for appropriate operating conditions.

Why is C3 clearance used?

Initial radial internal clearance can decrease after installation and during operation.

Factors affecting operating clearance include:

• inner-ring interference fit

• outer-ring interference fit

• shaft thermal expansion

• housing temperature

• temperature differences between the bearing rings

• operating conditions

C3 is selected where the bearing arrangement requires greater initial radial internal clearance.

A C3 execution should not automatically be replaced with a Normal-clearance bearing without evaluating the operating conditions.

Separable bearing design

An important characteristic of the NU configuration is its separable construction.

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

This can simplify:

• installation

• removal

• separate mounting of the bearing rings

• inspection of shaft and housing fits

During installation, the raceways and cylindrical rollers must be protected against contamination and mechanical damage.

FAG NU226-E-M1-C3 vs NU226-E-M1

Both executions can have the same principal dimensions and NU internal configuration.

The important difference is radial internal clearance.

NU226-E-M1-C3 - C3 radial internal clearance, greater than Normal.

NU226-E-M1 - Normal radial internal clearance when no special clearance suffix is specified.

These versions should not automatically be interchanged without checking the requirements of the bearing arrangement.

FAG NU226-E-M1-C3 vs N226

NU and N cylindrical roller bearings can have similar principal dimensions but differ in flange arrangement.

In the NU design, the outer ring has two integral flanges and the inner ring is flangeless.

In the N design, the inner ring has two integral flanges and the outer ring is flangeless.

These configurations should not be considered identical solely because their principal dimensions correspond.

FAG NU226-E-M1-C3 vs NJ226

The NJ design differs from NU because the inner ring has one integral flange.

This changes the axial locating capability of the bearing.

An NU bearing permits axial displacement in both directions within the bearing, whereas an NJ bearing can locate the shaft axially in one direction.

NU226 and NJ226 should therefore not be considered functionally identical.

FAG NU226-E-M1-C3 vs 6226-M-C3

Both bearings can have the same principal dimensions:

130x230x40 mm

but they are fundamentally different bearing designs.

NU226-E-M1-C3:

• cylindrical roller bearing

• one row of cylindrical rollers

• NU configuration

• designed primarily for radial loads

• permits relative axial displacement between the bearing rings

6226-M-C3:

• deep groove ball bearing

• one row of balls

• deep raceway grooves

• accommodates radial loads and axial loads in both directions

Despite identical 130x230x40 mm dimensions, these bearings are not functionally equivalent.

Alternative designations and search references

This bearing may also be searched for as:

• FAG NU226-E-M1-C3

• NU226-E-M1-C3 FAG

• FAG NU 226 E M1 C3

• NU 226 E M1 C3 FAG

• FAG NU226 EM1 C3

• NU226 EM1 C3

• FAG NU226 M1 C3

• FAG NU226 C3

• FAG NU226 130x230x40

• NU226-E-M1-C3 130x230x40

• FAG cylindrical roller bearing 130x230x40

• FAG NU226 brass cage C3

For unambiguous technical identification, use the complete designation:

FAG NU226-E-M1-C3

Replacement selection and interchangeability

Before selecting a replacement, verify:

• manufacturer

• complete designation

• NU configuration

• dimensions 130x230x40 mm

• E internal design

• M1 cage execution

• C3 radial internal clearance

• required shaft fit

• required housing fit

• radial load

• required axial displacement

• rotational speed

• lubrication

• operating temperature

A replacement should not be selected solely by dimensions.

Typical applications of NU cylindrical roller bearings

Single-row NU cylindrical roller bearings are used in arrangements requiring high radial load carrying capability and the ability to accommodate axial displacement between the shaft and housing.

Typical applications for this bearing family include:

• electric motors

• gearboxes

• industrial machinery

• heavy drive systems

• pumps

• industrial fans

• production equipment

These are typical applications of the NU bearing family and do not confirm the suitability of the exact NU226-E-M1-C3 for a specific machine.

Mounting FAG NU226-E-M1-C3

Before mounting, carefully inspect and clean:

• shaft

• housing

• bearing seats

• inner ring

• outer ring assembly

• rollers and raceways

Because of the separable NU design, the inner ring and the remaining bearing assembly can be installed separately.

Mounting force should be applied directly to the ring being installed with an interference fit.

Mounting forces should not be transmitted through the cylindrical rollers and raceways.

After installation, appropriate lubrication must be provided according to the requirements of the specific bearing arrangement.

FAQ

What are the dimensions of FAG NU226-E-M1-C3?

The bearing measures 130x230x40 mm: 130 mm bore, 230 mm outside diameter and 40 mm width.

What type of bearing is NU226-E-M1-C3?

It is a FAG single-row cylindrical roller bearing with an NU configuration.

What does NU mean?

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

What does M1 mean?

M1 identifies a solid brass cage guided on the rolling elements.

What does C3 mean?

C3 means radial internal clearance greater than Normal.

Can NU226-E-M1-C3 accommodate axial loads?

The NU design is intended primarily for radial loads and permits axial displacement between the bearing rings. It is not designed as a conventional axially locating bearing.

Is FAG NU226-E-M1-C3 separable?

Yes. The NU design is separable, allowing the inner ring to be mounted separately from the outer ring, roller and cage assembly.

Can FAG NU226-E-M1-C3 replace FAG 6226-M-C3?

Not solely on the basis of dimensions. Although both can measure 130x230x40 mm, they have different rolling elements, internal designs and functions within a bearing arrangement.

FAG NU226-E-M1-C3 - key information

FAG NU226-E-M1-C3 is a 130x230x40 mm single-row cylindrical roller bearing with NU design, optimized E internal geometry, solid brass M1 cage and C3 radial internal clearance. It is designed primarily for radial loads and permits relative axial displacement between the shaft and housing within the bearing.

FAG NU226-E-M1-C3 is available from the specialist industrial supplier simmering.pl, with stock in Poland and worldwide shipping. Assistance is also available with FAG bearing identification and selection of the correct cylindrical roller bearing execution.