22220EJW33 TIMKEN 100x180x46 mm Spherical Roller Bearing

22220EJW33 TIMKEN 100x180x46 mm Spherical Roller Bearing

22220EJW33 TIMKEN 100x180x46 mm is a double-row self-aligning spherical roller bearing with a cylindrical bore, EJ steel cage, W33 lubrication feature and standard C0 internal clearance. Its design accommodates high radial loads, axial loads in both directions and a certain degree of shaft-to-housing misalignment.

Technical data - TIMKEN 22220EJW33

What does 22220EJW33 mean?

The complete designation:

22220EJW33

identifies a specific TIMKEN spherical roller bearing execution.

The principal elements of the designation are:

• 22220 - basic spherical roller bearing designation
• EJ - TIMKEN steel cage design
• W33 - lubrication feature
• no K suffix - cylindrical bore
• no C3 or C4 suffix - standard C0 internal clearance
• TIMKEN - manufacturer

The complete designation is important when selecting a replacement. Identical dimensions of 100x180x46 mm alone are not sufficient to establish complete technical interchangeability.

Dimensions of TIMKEN 22220EJW33

The principal dimensions are:

100x180x46 mm

where:

• d = 100 mm - bore diameter
• D = 180 mm - outside diameter
• B = 46 mm - bearing width

TIMKEN also specifies installation-related dimensions including:

• maximum fillet radius = 2 mm
• shaft backing diameter = 120 mm
• housing backing diameter = 163 mm

These dimensions should be considered when checking the shaft, housing and adjacent components.

Double-row spherical roller bearing

22220EJW33 is a double-row spherical roller bearing.

Two rows of barrel-shaped rollers operate against a common spherical raceway in the outer ring.

This geometry gives spherical roller bearings their characteristic self-aligning capability and enables the bearing to:

• accommodate high radial loads
• accommodate axial loads in both directions
• operate under combined loading
• compensate for certain shaft-to-housing misalignment
• accommodate certain shaft deflections
• operate in demanding industrial bearing arrangements

Self-aligning design

The spherical outer-ring raceway allows the inner-ring and roller assembly to align relative to the outer ring.

This enables the bearing to compensate for certain levels of:

• shaft and housing misalignment
• shaft deflection
• mounting inaccuracies
• structural deflection under operating load

The permissible amount of misalignment depends on the actual bearing arrangement and operating conditions.

Self-alignment should not be treated as a substitute for correct machine alignment and installation.

Cylindrical bore

TIMKEN 22220EJW33 has a cylindrical bore with a diameter of:

100 mm

The absence of the letter K is technically significant.

The following variants should be distinguished:

22220EJW33

Cylindrical bore.

22220KEJW33

Tapered bore.

Although both belong to the same basic bearing size, they require different mounting considerations and should not automatically be considered interchangeable.

What does EJ mean?

EJ identifies a specific TIMKEN spherical roller bearing design with a steel cage.

For 22220EJW33, TIMKEN specifies:

Cage type: EJ

Cage material: steel

The cage maintains appropriate roller spacing and contributes to correct roller guidance during operation.

Cage construction is part of the bearing's technical specification and should be considered when comparing alternative bearing executions.

What does W33 mean?

W33 identifies a lubrication-related feature incorporated into the bearing design.

It supports lubricant supply and distribution within the spherical roller bearing and is particularly relevant in industrial applications where periodic relubrication is required.

The complete designation should therefore retain:

W33

The appropriate lubricant, quantity and relubrication interval depend on factors including:

• operating speed
• bearing load
• temperature
• contamination
• operating environment
• bearing arrangement
• machine manufacturer's requirements

Standard C0 internal clearance

TIMKEN specifies the 22220EJW33 variant with:

C0 Clearance

This means standard internal clearance.

This is an important distinction because variants with other clearance classes are also available, including:

• 22220EJW33C2
• 22220EJW33C3
• 22220EJW33C4

The standard 22220EJW33 should therefore not automatically be described as a C3 bearing.

Internal clearance is an important selection parameter, particularly where interference fits, temperature differences or relatively high operating speeds are involved.

22220EJW33 vs 22220EJW33C3

Both versions have the same principal dimensions:

100x180x46 mm

However, their internal clearance differs.

22220EJW33

Standard C0 internal clearance.

22220EJW33C3

Increased C3 internal clearance.

The appropriate clearance depends on the operating conditions, fits, temperature and machine design.

The two variants should not automatically be treated as technically identical.

22220EJW33 vs 22220KEJW33

The principal difference is the bore design.

22220EJW33

• cylindrical bore
• d = 100 mm

22220KEJW33

• tapered bore
• K suffix

The tapered-bore version may require a different mounting arrangement and appropriate mating components.

Always verify the complete bearing designation when selecting a replacement.

Radial and axial load capability

Spherical roller bearings are primarily designed for high radial loads.

Their internal geometry also enables them to accommodate axial loads in both directions.

This makes 22220EJW33 suitable for bearing arrangements exposed to:

• high radial loads
• combined radial and axial loads
• reversing axial forces
• varying loads
• shaft deflection or misalignment within permissible limits

The actual permissible operating conditions depend on the complete bearing arrangement.

Load ratings of TIMKEN 22220EJW33

TIMKEN specifies:

Dynamic radial load rating C1: 435 kN

Static radial load rating C0: 502 kN

These are catalogue engineering ratings used in bearing selection and life calculations.

They should not be interpreted as universal maximum permissible operating loads for every machine.

Correct selection requires consideration of actual loads, operating speed, lubrication, fits, temperature, contamination and required service life.

Calculation factors

TIMKEN specifies the following factors for 22220EJW33:

• e = 0.24
• Y0 = 2.78
• Y1 = 2.85
• Y2 = 4.24
• Cg = 0.0694

These values are used in engineering calculations according to TIMKEN methodology.

Accurate bearing life calculations require actual operating data rather than nominal bearing dimensions alone.

Speed data

TIMKEN specifies:

Thermal Reference Speed - oil: 3800 rpm

Thermal Reference Speed - grease: 3100 rpm

These are manufacturer reference values.

They should not automatically be interpreted as maximum permissible continuous operating speeds for every application.

Actual speed capability depends on factors including:

• load
• operating temperature
• lubricant
• lubrication method
• lubricant quantity
• internal clearance
• shaft and housing fits
• heat dissipation
• environmental conditions

Internal clearance and operating temperature

Internal clearance can change after mounting and during operation.

An interference fit can reduce internal clearance, while temperature differences between the inner and outer rings can also affect operating clearance.

For this reason, selecting between C0, C3 or another clearance class should be based on the complete bearing arrangement rather than a general assumption that increased clearance is always preferable.

The machine manufacturer's specification should take priority when available.

Alternative designations and search references

Natural designation and search variants include:

• TIMKEN 22220EJW33
• 22220EJW33 TIMKEN
• TIMKEN 22220 EJW33
• 22220 EJW33 TIMKEN
• 22220-EJW33
• 22220 EJ W33
• 22220EJ W33
• TIMKEN 22220 W33
• 22220 TIMKEN bearing
• TIMKEN 22220 bearing
• 22220 spherical roller bearing
• 22220EJW33 spherical roller bearing
• 22220 bearing 100x180x46
• TIMKEN bearing 100x180x46
• spherical roller bearing 100x180x46
• double row spherical roller bearing 100x180x46
• 22220 W33 spherical roller bearing

These are natural designation and search variants. They do not establish automatic interchangeability with bearings from other manufacturers.

How to select a replacement for 22220EJW33

Before selecting an equivalent bearing, verify:

• 100 mm bore diameter
• 180 mm outside diameter
• 46 mm width
• double-row spherical roller bearing construction
• cylindrical bore
• EJ cage design
• steel cage
• W33 lubrication feature
• required internal clearance
• dynamic load rating
• static load rating
• axial load requirements
• operating speed
• shaft fit
• housing fit
• lubrication method
• operating temperature
• permissible misalignment
• machine manufacturer's requirements

Identical dimensions of 100x180x46 mm alone do not guarantee complete interchangeability.

Typical applications of spherical roller bearings

Double-row spherical roller bearings are widely used in demanding industrial bearing arrangements exposed to high loads and potential misalignment.

Typical application areas for this bearing category include:

• industrial gearboxes
• conveyor systems
• crushers
• vibrating screens
• industrial fans
• mining equipment
• steel industry machinery
• paper machinery
• material handling equipment
• heavy industrial machinery
• industrial shaft systems
• maintenance operations

These are typical applications of spherical roller bearings as a product category. They do not confirm that 22220EJW33 is specified for a particular machine or OEM application.

Installation of TIMKEN 22220EJW33

Before installation, inspect the shaft, housing and all mating surfaces.

Good installation practice includes:

• maintaining high cleanliness
• checking shaft and housing fits
• using appropriate mounting equipment
• avoiding mounting forces transmitted through the rollers
• protecting raceways and rollers from damage
• checking the required internal clearance
• using the appropriate lubricant
• considering the W33 relubrication arrangement
• verifying correct alignment of the bearing arrangement

With a 100 mm cylindrical bore, the mounting method should be selected according to the required fit and machine design.

Incorrect installation can affect internal clearance, operating temperature and bearing service life.

FAQ - TIMKEN 22220EJW33

What are the dimensions of TIMKEN 22220EJW33?

The bearing has a 100 mm bore diameter, 180 mm outside diameter and 46 mm width. Its principal dimensions are 100x180x46 mm.

What type of bearing is 22220EJW33?

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

Does 22220EJW33 have a cylindrical bore?

Yes. TIMKEN specifies this variant with a cylindrical bore.

What internal clearance does 22220EJW33 have?

TIMKEN specifies C0 standard internal clearance for this variant.

What does EJ mean?

EJ identifies the TIMKEN bearing execution with a steel cage.

What does W33 mean?

W33 identifies a lubrication-related feature designed to support lubricant supply and distribution within the bearing.

What is the dynamic load rating of 22220EJW33?

TIMKEN specifies a dynamic radial load rating C1 of 435 kN.

What is the static load rating of 22220EJW33?

TIMKEN specifies a static radial load rating C0 of 502 kN.

TIMKEN 22220EJW33 100x180x46 mm - key information

TIMKEN 22220EJW33 is a double-row self-aligning spherical roller bearing with dimensions of 100x180x46 mm, a cylindrical bore, EJ steel cage, W33 lubrication feature and standard C0 internal clearance. TIMKEN specifies a dynamic radial load rating of 435 kN, static radial load rating of 502 kN and Thermal Reference Speeds of 3800 rpm with oil and 3100 rpm with grease.

Availability from simmering.pl

TIMKEN 22220EJW33 100x180x46 mm spherical roller bearing is available from simmering.pl for industrial customers, maintenance departments, machine manufacturers, technical services, distributors and B2B procurement.

simmering.pl supplies industrial bearings and technical sealing products from stock in Poland, with worldwide shipping available.