22228-E1-K FAG 140x250x68 mm Spherical Roller Bearing

22228-E1-K FAG 140x250x68 mm Spherical Roller Bearing

22228-E1-K FAG 140x250x68 mm is a double-row spherical roller bearing manufactured by FAG/Schaeffler, featuring a tapered bore with a 1:12 taper. Its self-aligning design allows the bearing to accommodate angular misalignment between the shaft and housing. The E1 design represents an optimized FAG spherical roller bearing construction with high load-carrying capacity, while the K suffix identifies the tapered bore.

Technical Data - FAG 22228-E1-K

FAG 22228-E1-K Dimensions

The principal dimensions are:

140x250x68 mm

where:

• d: 140 mm - nominal bore diameter

• D: 250 mm - outside diameter

• B: 68 mm - bearing width

An important feature of the 22228-E1-K version is its tapered rather than cylindrical bore.

For this reason, dimensions alone are not sufficient to determine full interchangeability.

What Does 22228 Mean?

The designation 22228 identifies the bearing series and size.

This is a double-row spherical roller bearing with two rows of barrel-shaped rollers and a common spherical raceway in the outer ring.

This internal geometry gives spherical roller bearings their self-aligning capability and allows them to accommodate suitable levels of angular misalignment caused by shaft deflection or alignment errors between the shaft and bearing housing.

What Does E1 Mean in FAG 22228-E1-K?

The suffix:

E1

identifies an optimized FAG spherical roller bearing design with increased load-carrying capacity.

The E1 design makes efficient use of the internal bearing space and is engineered for high load capacity.

When selecting a replacement bearing, the complete designation:

22228-E1-K

should therefore be considered rather than relying solely on the basic 22228 designation.

What Does K Mean?

The suffix:

K

is particularly important when selecting and installing this bearing.

For FAG 22228-E1-K it identifies a:

tapered bore with a 1:12 taper

The bearing is therefore structurally different from a corresponding 22228-E1 version with a cylindrical bore.

A tapered bore allows installation on a suitably designed tapered shaft seat or by means of an appropriate adapter sleeve.

1:12 Tapered Bore

The 1:12 taper defines the geometry of the bearing's tapered inner-ring bore.

When a spherical roller bearing is driven onto a tapered seat, axial displacement expands the inner ring and consequently reduces the bearing's internal radial clearance.

Correct installation therefore requires controlled mounting procedures appropriate for spherical roller bearings with tapered bores.

Excessive drive-up can result in excessive reduction of internal clearance, while insufficient drive-up may result in inadequate seating of the bearing.

Mounting with an Adapter Sleeve

FAG 22228-E1-K can be installed using an appropriately selected adapter sleeve where the shaft and application design permit this mounting method.

For this bearing size, H3128 is a commonly associated adapter sleeve designation.

The complete mounting arrangement must nevertheless be verified before installation, including:

• shaft diameter

• sleeve designation

• required internal clearance

• mounting method

• axial drive-up

• application requirements

The nominal 140 mm tapered bore diameter of the bearing should not automatically be interpreted as the shaft diameter when an adapter sleeve is used.

Self-Aligning Spherical Roller Bearing Design

One of the principal advantages of spherical roller bearings is their self-aligning capability.

The spherical outer-ring raceway allows the inner ring and roller assembly to operate at an angle relative to the outer ring within the permissible alignment range.

This construction can accommodate misalignment resulting from:

• shaft deflection

• housing deformation

• mounting inaccuracies

• alignment differences between bearing housings

The permissible angular misalignment depends on the actual operating conditions and surrounding bearing arrangement.

Basic Dynamic Load Rating Cr

The basic dynamic load rating is:

Cr: 870 kN

This parameter is used in bearing life calculations.

It should not be interpreted as a simple maximum permissible machine load because actual bearing life depends on several factors, including applied load, speed, lubrication, contamination and operating conditions.

Basic Static Load Rating C0r

The basic static load rating is:

C0r: 1040 kN

This parameter is relevant when evaluating a bearing subjected to high static loads, shock loads or very slow rotational movement.

Fatigue Load Limit Cur

The fatigue load limit is:

Cur: 97 kN

This parameter is used in advanced bearing-life calculations.

It should not be interpreted as the maximum permissible operating load of the bearing.

Radial and Axial Loads

Spherical roller bearings are primarily designed for very high radial loads.

Their internal geometry also allows them to support axial loads in both directions.

This makes the 22228-E1-K suitable for appropriately engineered bearing arrangements where high radial loading occurs together with axial forces and potential shaft or housing misalignment.

Bearing Speeds

Published values for FAG 22228-E1-K include:

Reference speed nB: 2320 rpm

Limiting speed nG: 3150 rpm

These values should not be interpreted as automatically permissible operating speeds in every application.

Actual permissible speed depends on factors including:

• bearing load

• lubrication

• operating temperature

• mounting arrangement

• operating internal clearance

• heat dissipation

• surrounding components

• environmental conditions

Bearing Mass

The FAG 22228-E1-K has a mass of approximately:

13.7 kg

Its weight should be considered during transport, handling and installation, particularly when the bearing is mounted in confined industrial machinery.

22228-E1-K vs 22228-E1

The most important difference is the bore design.

22228-E1-K

Tapered bore, taper 1:12

22228-E1

Cylindrical bore

Although their principal boundary dimensions may be the same, these are not identical bearing versions.

The K suffix directly affects how the bearing is mounted on the shaft.

22228-E1-K vs 22228-E1-K-C3

The designation:

22228-E1-K

does not contain the C3 suffix.

It should therefore not automatically be described as:

22228-E1-K-C3

C3 identifies an increased internal clearance version and must be explicitly specified when required.

Internal clearance is especially important with tapered-bore spherical roller bearings because the mounting process reduces radial internal clearance as the inner ring is expanded on the tapered seat.

Typical Applications

FAG 22228-E1-K spherical roller bearings are suitable for appropriately designed heavy-duty industrial bearing arrangements.

Typical applications for spherical roller bearings of this size can include:

• heavy industrial machinery

• conveyors

• material-handling equipment

• industrial gearboxes

• mining machinery

• construction machinery

• steel and metal-processing equipment

• paper machinery

• crushers

• industrial fans

• heavy-duty drive systems

Suitability for a specific machine must always be determined from the machine manufacturer's requirements and engineering calculations.

How to Select FAG 22228-E1-K

Before ordering, verify:

1. Complete designation 22228-E1-K.

2. FAG/Schaeffler manufacturer.

3. Dimensions 140x250x68 mm.

4. K tapered bore.

5. Bore taper 1:12.

6. Required internal clearance.

7. Mounting arrangement.

8. Adapter sleeve requirements, if applicable.

9. Radial and axial loads.

10. Required bearing life and operating speed.

Identical 140x250x68 mm dimensions do not automatically guarantee full interchangeability between spherical roller bearings.

Installation Considerations

Before mounting the bearing, verify the shaft, housing, tapered seat or adapter sleeve and all associated components.

For tapered-bore spherical roller bearings, correct mounting is particularly important because axial displacement on the taper changes the fit and reduces radial internal clearance.

The installation procedure should follow the appropriate Schaeffler/FAG mounting recommendations for the specific bearing arrangement.

FAQ

What are the dimensions of FAG 22228-E1-K?

The bearing dimensions are 140x250x68 mm: 140 mm nominal bore diameter, 250 mm outside diameter and 68 mm width.

What type of bearing is 22228-E1-K?

It is a double-row, self-aligning spherical roller bearing.

What does K mean?

K identifies a tapered bore. For this bearing, the bore taper is 1:12.

What does E1 mean?

E1 identifies an optimized FAG spherical roller bearing design with increased load-carrying capacity.

What is the dynamic load rating?

The basic dynamic load rating Cr is 870 kN.

What is the static load rating?

The basic static load rating C0r is 1040 kN.

What is the fatigue load limit?

The fatigue load limit Cur is 97 kN.

How much does FAG 22228-E1-K weigh?

The bearing mass is approximately 13.7 kg.

Does FAG 22228-E1-K have a cylindrical bore?

No. The K suffix identifies a 1:12 tapered bore.

Can FAG 22228-E1-K be mounted using an H3128 adapter sleeve?

H3128 is commonly associated with this bearing size for appropriate adapter-sleeve mounting arrangements. The shaft diameter and complete mounting arrangement must be verified before installation.

Is 22228-E1-K a C3 bearing?

The designation provided does not contain C3. A bearing with increased C3 internal clearance should have the appropriate additional suffix.

Can 22228-E1-K carry axial loads?

Spherical roller bearings are primarily designed for high radial loads but can also accommodate axial loads in both directions within the limits of the specific bearing arrangement.

FAG 22228-E1-K - Quick Technical Answer

FAG 22228-E1-K 140x250x68 mm is a double-row self-aligning spherical roller bearing from Schaeffler with a K tapered bore and 1:12 taper. Its basic dynamic load rating is 870 kN, static load rating 1040 kN and fatigue load limit 97 kN. The bearing mass is approximately 13.7 kg.

FAG 22228-E1-K at simmering.pl

FAG 22228-E1-K 140x250x68 mm is available from simmering.pl, a specialist B2B supplier of FAG/Schaeffler bearings, spherical roller bearings, industrial bearings and technical sealing solutions.

Stock and technical service are located in Lublin, Poland, with worldwide shipping available.