SKF NU 2313 ECP 65x140x48 - Single Row Cylindrical Roller Bearing

Technical Specifications - SKF NU 2313 ECP

The listed load ratings, speeds and mass are SKF catalogue values. Actual operating conditions require consideration of applied loads, mounting fits, temperature, lubrication and the complete bearing arrangement.

What Does SKF NU 2313 ECP Mean?

NU - Cylindrical Roller Bearing Design

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

This geometry allows axial displacement between the inner and outer rings.

Consequently, the bearing can serve as a non-locating shaft support.

The NU design is not intended to locate the shaft axially.

2313 - Bearing Series and Size

The designation 2313 identifies the bearing size within the NU 23 series.

For SKF NU 2313 ECP, the principal dimensions are:

• Bore diameter d: 65 mm.

• Outside diameter D: 140 mm.

• Bearing width B: 48 mm.

Compared with SKF NU 313 ECP, which measures 65x140x33 mm, the NU 2313 ECP version has a greater bearing width.

E - Optimized Internal Design

The suffix E identifies SKF's optimized internal bearing design.

This execution incorporates roller and raceway geometry developed to improve load-carrying capability.

The E version should not automatically be considered equivalent to earlier bearing executions with identical principal dimensions.

CP - Polyamide Cage

The suffix CP identifies a glass fibre reinforced polyamide cage guided by the rollers.

The cage maintains the correct spacing between rolling elements and supports their guidance during operation.

Its material properties must be considered when selecting a bearing for particular operating temperatures and lubricants.

Internal Clearance Designation

The designation NU 2313 ECP does not include the additional clearance suffix /C3 or /C4.

Versions such as NU 2313 ECP/C3 and NU 2313 ECP/C4 differ in their internal clearance specifications.

They should not be treated as identical to the standard execution.

Construction of SKF NU 2313 ECP

Outer Ring

The outer ring incorporates two integral flanges that guide the cylindrical rollers in the axial direction.

These flanges restrict axial movement of the roller assembly relative to the outer ring.

Inner Ring

The inner ring has no integral flanges.

This allows the inner ring to move axially relative to the roller assembly and outer ring.

Cylindrical Rollers

The rolling elements are cylindrical rollers.

Their line-contact geometry enables the bearing to accommodate high radial loads.

CP Cage

The glass fibre reinforced polyamide cage maintains the correct spacing between the rollers.

The cage is guided by the rolling elements.

Separable Construction

In an NU-type cylindrical roller bearing, the inner ring can be separated from the outer ring assembly containing the rollers and cage.

This characteristic facilitates installation and removal in appropriately designed mechanical assemblies.

Load-Carrying Characteristics of SKF NU 2313 ECP

Radial Loads

SKF NU 2313 ECP is designed primarily to accommodate radial loads.

Its basic dynamic load rating C is 285 kN, while its basic static load rating C0 is 290 kN.

These values are used in bearing life calculations and load assessments.

They must not be interpreted as universally permissible operating loads for every application.

Axial Loads

The NU design is not intended to carry external axial loads.

The flangeless inner ring can move axially relative to the outer ring and roller assembly.

In a conventional bearing arrangement, axial shaft location must therefore be provided by another appropriately selected bearing or mechanical component.

Axial Displacement and Thermal Expansion Compensation

Industrial shafts may change length as their operating temperature increases or decreases.

If both shaft ends are rigidly located axially, thermal expansion can generate additional forces within the bearing arrangement.

SKF NU 2313 ECP allows relative axial displacement between its rings.

This makes it suitable for use as a non-locating bearing together with a separate locating bearing.

This characteristic is particularly relevant in arrangements involving:

• Changes in shaft temperature.

• Thermal expansion.

• High radial loads.

• The need for interference fits on bearing rings.

• Axial displacement compensation.

The permissible axial displacement must be evaluated according to the bearing design, installation geometry and operating conditions.

Why Is SKF NU 2313 ECP Used as a Non-Locating Bearing?

In many mechanical assemblies, a rotating shaft is supported at two bearing positions.

One bearing locates the shaft axially, while the other must allow axial movement caused by thermal expansion or other operating conditions.

SKF NU 2313 ECP can perform the non-locating function because axial displacement occurs internally between the bearing rings.

This allows the bearing arrangement to accommodate changes in shaft length without requiring the bearing rings to slide within their mounting seats.

The locating bearing and the complete shaft support system must be selected accordingly.

SKF NU 2313 ECP vs Other Bearing Variants

NU 2313 ECP vs NJ 2313 ECP

Both bearings have principal dimensions of 65x140x48 mm.

However, their flange arrangements differ.

The NU version allows axial displacement, while the NJ version can accommodate axial loads in one direction.

They should not be considered automatically interchangeable.

NU 2313 ECP vs NUP 2313 ECP

The NUP design incorporates a flange arrangement that enables axial shaft location in both directions.

The NU version is designed for non-locating support.

The correct selection depends on the function of the bearing position within the complete shaft arrangement.

NU 2313 ECP vs NU 2313 ECP/C3

Both versions share the same principal dimensions and NU construction.

The /C3 execution has greater internal clearance than the normal clearance version.

Changing between these versions requires evaluation of mounting fits, operating temperature and required operating clearance.

NU 2313 ECP vs NU 313 ECP

SKF NU 2313 ECP has a width of 48 mm, while SKF NU 313 ECP has a width of 33 mm.

Although both bearings have a 65 mm bore and a 140 mm outside diameter, they are not dimensionally identical.

Alternative Designations and Search References

The product may be encountered under the following written forms:

• SKF NU 2313 ECP

• NU 2313 ECP SKF

• NU2313ECP SKF

• SKF NU2313ECP

• NU 2313 ECP 65x140x48

These are alternative written presentations of the same SKF catalogue designation.

NJ 2313 ECP, NUP 2313 ECP and NU 2313 ECP/C3 must not be treated as alternative spellings of the same product.

Typical Applications of NU Cylindrical Roller Bearings

NU-type cylindrical roller bearings are commonly used in arrangements requiring high radial load capacity and internal axial displacement.

Typical application categories include:

• Industrial drive systems.

• Industrial gearbox shafts.

• Bearing assemblies in production machinery.

• Locating and non-locating bearing arrangements.

• Mechanical systems exposed to shaft thermal expansion.

• Machinery requiring separable bearing construction.

These are general applications based on the characteristics of NU cylindrical roller bearings.

They do not establish confirmed installation of SKF NU 2313 ECP in any specific machine model.

Industrial Drive Systems

Cylindrical roller bearings can provide radial shaft support in industrial power transmission equipment.

The correct bearing selection depends on load magnitude, rotational speed and operating conditions.

Gearbox Shafts

NU bearings may be used in gearbox bearing arrangements where axial displacement must be accommodated at one shaft support position.

The complete gearbox design must provide suitable axial location elsewhere.

Machinery Subject to Thermal Expansion

In mechanical systems exposed to temperature changes, NU bearings can compensate for axial movement between the shaft and housing.

This function helps avoid unwanted axial constraint within the bearing arrangement.

Selection and Interchangeability of SKF NU 2313 ECP

Before ordering, verify:

1. Complete designation NU 2313 ECP.

2. Manufacturer SKF.

3. Bore diameter of 65 mm.

4. Outside diameter of 140 mm.

5. Bearing width of 48 mm.

6. NU flange arrangement.

7. CP cage construction.

8. Required internal clearance.

9. Radial operating load.

10. Rotational speed.

11. Operating temperature.

12. Lubrication conditions.

13. Shaft and housing fits.

14. Required axial displacement.

15. Bearing function within the shaft arrangement.

Can Another Manufacturer's Bearing with Dimensions 65x140x48 mm Replace SKF NU 2313 ECP?

Not necessarily.

A replacement must have a compatible internal design, flange arrangement, internal clearance, cage construction, load ratings and operating characteristics.

Matching dimensions alone do not establish full interchangeability.

Can SKF NU 2313 ECP Be Replaced with an NJ Bearing?

Not automatically.

The NU and NJ designs differ in their ability to accommodate axial loads and axial displacement.

Any substitution requires an engineering assessment of the complete bearing arrangement.

Installation and Operation of SKF NU 2313 ECP

Clean Installation Conditions

Before installation, clean the shaft, housing and mating surfaces.

Protect the bearing against dust, moisture and mechanical damage.

Check Mounting Fits

Verify shaft and housing tolerances and select fits appropriate for the applied loads and operating conditions.

Installation of Bearing Rings

The separable construction allows the inner ring to be installed independently of the outer ring and roller assembly.

Do not transmit mounting force through the rolling elements.

Axial Displacement

During installation, ensure correct relative positioning of the bearing rings and sufficient freedom for the required axial movement.

Lubrication

SKF NU 2313 ECP is an open bearing.

It requires appropriate oil or grease lubrication selected according to the operating conditions.

Storage

Store the bearing in its original packaging in a clean, dry environment.

Protect it from moisture, corrosion and contamination before installation.

Frequently Asked Questions - SKF NU 2313 ECP

What Are the Dimensions of SKF NU 2313 ECP?

The bearing has a bore diameter of 65 mm, an outside diameter of 140 mm and a width of 48 mm.

What Does NU Mean in SKF NU 2313 ECP?

NU identifies a cylindrical roller bearing with two integral flanges on the outer ring and a flangeless inner ring. This design allows relative axial displacement between the bearing rings.

What Does ECP Mean?

E identifies an optimized internal design, while CP specifies a glass fibre reinforced polyamide cage guided by the rollers.

Can SKF NU 2313 ECP Carry Axial Loads?

The NU design is not intended to carry external axial loads. It is primarily designed to accommodate radial loads.

Are NU 2313 ECP and NJ 2313 ECP Interchangeable?

Not automatically. They have different flange arrangements and axial load-carrying characteristics.

Does SKF NU 2313 ECP Have a Brass Cage?

No. The CP suffix identifies a glass fibre reinforced polyamide cage.

Is SKF NU 2313 ECP Sealed?

No. It is an open bearing requiring suitable lubrication and protection against contamination.

What Are the Load Ratings of SKF NU 2313 ECP?

The basic dynamic load rating C is 285 kN, and the basic static load rating C0 is 290 kN.

SKF NU 2313 ECP - Quick Technical Overview

SKF NU 2313 ECP is a single row cylindrical roller bearing measuring 65x140x48 mm, featuring a separable NU design and a glass fibre reinforced polyamide CP cage. The E suffix identifies optimized internal geometry. The bearing accommodates high radial loads and allows axial displacement between its rings, making it suitable for non-locating shaft support.

SKF NU 2313 ECP at simmering.pl

SKF NU 2313 ECP is available to order from simmering.pl, a specialist supplier of industrial bearings, rotary shaft oil seals and technical replacement components.

We serve manufacturing companies, maintenance departments, machinery service providers and B2B customers.

Our warehouse and order processing operations are located in Lublin, Poland.

We supply customers throughout Poland and the European Union and offer worldwide shipping.

We assist customers in identifying SKF bearings by complete manufacturer designation, dimensions, construction and technical specifications.