SKF 22216 EK 80x140x33 mm - Spherical Roller Bearing

Technical Specifications

The dimensions 80x140x33 mm represent the nominal boundary dimensions. Because the bearing has a tapered bore, the nominal bore diameter of 80 mm does not mean that the bore has a constant diameter along its entire width.

The load ratings, speeds, mass, and other technical parameters are based on previously verified SKF catalogue information for the exact designation 22216 EK.

What Does SKF 22216 EK Mean?

The designation identifies the bearing series, bore diameter, optimized internal construction, and tapered bore configuration.

22216 - Bearing series and dimensions

The basic designation 22216 identifies a double-row spherical roller bearing with nominal dimensions of 80x140x33 mm.

The bearing incorporates two rows of rollers and a common spherical outer ring raceway, allowing the inner ring and roller assembly to accommodate angular misalignment.

E - Optimized SKF internal design

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

This construction uses symmetrical rollers and pressed steel cages, with internal geometry developed to increase load-carrying capacity.

The E suffix does not define radial internal clearance, lubricant type, or operating temperature.

K - Tapered bore with a 1:12 taper

The K suffix is particularly important when selecting SKF 22216 EK.

It identifies a tapered bore with a 1:12 taper.

This configuration allows the bearing to be mounted directly on a suitable tapered shaft seat or by using an appropriate adapter or withdrawal sleeve.

As the bearing is driven up the tapered mounting surface, the inner ring expands and the radial internal clearance decreases.

The mounting procedure must therefore control either axial drive-up or radial clearance reduction according to SKF's instructions.

Normal radial internal clearance (CN)

SKF 22216 EK has normal radial internal clearance unless an additional clearance suffix specifies otherwise.

For example, SKF 22216 EK/C3 identifies a version with greater initial radial internal clearance.

The required clearance must be evaluated with consideration of the clearance reduction during mounting and the operating conditions.

Construction and Operating Principle

SKF 22216 EK consists of an inner ring with two raceways, an outer ring with a common spherical raceway, two rows of symmetrical barrel-shaped rollers, and pressed steel cages.

The spherical geometry of the outer ring raceway allows the inner ring and roller assembly to align at a limited angle relative to the housing.

This self-aligning function helps compensate for shaft deflection and misalignment between the shaft and housing.

The two roller rows allow the bearing to accommodate substantial radial loads together with axial loads in both directions.

The bearing has an open construction without integrated seals.

Appropriate lubrication and protection against contamination must therefore be provided by the surrounding bearing arrangement.

Load Ratings and Operating Speeds

The SKF catalogue specifies the following performance parameters for 22216 EK.

The basic dynamic load rating is used in bearing life calculations under dynamic loading conditions.

The basic static load rating relates to resistance against permanent deformation under static loading conditions.

The fatigue load limit is used in SKF bearing life calculations.

The reference speed and limiting speed are catalogue values rather than guaranteed operating speeds under all conditions.

Actual permissible speed depends on lubrication, bearing load, operating temperature, heat generation, and the complete mounting arrangement.

Lubrication of SKF 22216 EK

SKF 22216 EK incorporates lubrication features that allow lubricant to be supplied through the outer ring.

The catalogue dimensions of these features are:

The bearing is an open design without integrated contact seals.

The appropriate lubricant and relubrication interval must be selected according to the operating conditions.

Relevant factors include rotational speed, load, temperature, contamination, and the housing lubrication system.

The bearing designation does not specify a particular grease formulation or lifetime grease fill.

SKF 22216 EK vs Other Variants

Different versions of the SKF 22216 series have identical nominal boundary dimensions but may differ in bore configuration or radial internal clearance.

All listed variants have nominal boundary dimensions of 80x140x33 mm.

However, identical dimensions do not mean that the bearings are directly interchangeable.

SKF 22216 E and SKF 22216 EK differ in bore geometry and mounting requirements.

Replacing SKF 22216 EK with SKF 22216 EK/C3 requires evaluation of the operating clearance after mounting.

Alternative Designations and Reference Formats

The following natural reference formats may be used to identify the bearing:

• SKF 22216 EK

• 22216 EK SKF

• SKF22216EK

• SKF 22216EK

• 22216EK SKF

These are alternative ways of writing the same product designation, not separate OEM part numbers.

Reported EAN/GTIN: 7316576652561.

No unverified OEM references or cross-manufacturer equivalents have been assigned.

Bearing Selection and Interchangeability

Before purchasing SKF 22216 EK, verify the complete bearing designation and the technical requirements of the application.

Important selection criteria include:

• Boundary dimensions: 80x140x33 mm.

• Bore configuration: Tapered, with a 1:12 taper.

• Internal design: SKF E.

• Radial internal clearance: Normal (CN).

• Mounting arrangement: Directly on a tapered shaft seat or with a suitable adapter or withdrawal sleeve.

• Clearance reduction: The reduction caused by driving the bearing onto the tapered seat.

• Load requirements: Radial and axial loading conditions.

• Operating speed: Compatibility with lubrication and operating temperature.

• Angular misalignment: Within the manufacturer's permissible limits.

• Lubrication: Appropriate grease or oil and adequate lubricant supply.

• Housing arrangement: Suitable fits, support surfaces, and protection against contamination.

Bearings from different manufacturers may share the same nominal dimensions but differ in internal geometry, cage design, load ratings, and operating characteristics.

Identical dimensions alone do not guarantee full technical interchangeability.

Applications of SKF 22216 EK

Double-row spherical roller bearings are designed for rotating assemblies requiring substantial radial load capacity and the ability to accommodate angular misalignment.

Typical applications for this bearing category include industrial shaft supports, mechanical power transmission systems, and bearing arrangements subjected to shaft deflection.

The tapered bore configuration is suitable for mounting arrangements that use compatible tapered shaft seats or bearing sleeves.

These are general applications of spherical roller bearings.

They do not establish that the exact SKF 22216 EK designation is approved for a particular machine, gearbox, motor, or OEM assembly.

Suitability must be confirmed against the equipment specifications and actual operating conditions.

Installation and Operating Recommendations

Preparation

Before installation, clean the shaft, sleeve, housing, and bearing mounting surfaces.

Check the dimensions, fits, and condition of all mating components.

Tapered bore mounting

When mounting SKF 22216 EK on a tapered seat or suitable sleeve, monitor the reduction in radial internal clearance or the axial drive-up according to SKF's recommended procedure.

Driving the bearing farther onto the taper expands the inner ring and reduces its internal clearance.

Excessive drive-up can result in insufficient residual clearance and bearing damage.

Do not use an assumed universal axial displacement value without considering the initial clearance and the selected mounting method.

Mounting forces

Use appropriate mounting tools.

Do not transmit mounting forces through the rollers or raceways.

Lubrication and operation

Provide the lubricant specified for the application.

Ensure adequate lubricant distribution and protection against contamination.

During operation, monitor bearing temperature, vibration, and lubrication condition as appropriate.

Storage

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

Protect it against moisture, contamination, impacts, and mechanical damage.

Frequently Asked Questions - FAQ

What are the dimensions of SKF 22216 EK?

SKF 22216 EK has a nominal bore diameter of 80 mm, an outside diameter of 140 mm, and a bearing width of 33 mm.

What does E mean in SKF 22216 EK?

The E suffix identifies SKF's optimized internal spherical roller bearing design, developed for increased load-carrying capacity.

What does K mean in SKF 22216 EK?

The K suffix identifies a tapered bore with a 1:12 taper.

Is SKF 22216 EK self-aligning?

Yes. The common spherical outer ring raceway allows the bearing to accommodate angular misalignment between the shaft and housing.

What radial internal clearance does SKF 22216 EK have?

The standard bearing has normal radial internal clearance (CN). Mounting on a tapered seat reduces the internal clearance.

Are SKF 22216 E and SKF 22216 EK interchangeable?

Not directly without evaluating the mounting arrangement. SKF 22216 E has a cylindrical bore, while SKF 22216 EK has a tapered bore.

Is SKF 22216 EK sealed?

No. It is an open spherical roller bearing without integrated seals and has features that facilitate relubrication.

What is the load rating of SKF 22216 EK?

The basic dynamic load rating is 243 kN, the basic static load rating is 270 kN, and the fatigue load limit is 29 kN.

SKF 22216 EK - Key Technical Information

SKF 22216 EK is a double-row self-aligning spherical roller bearing measuring 80x140x33 mm. The E suffix identifies SKF's optimized internal design, while K specifies a tapered bore with a 1:12 taper. The bearing has normal radial internal clearance, an open construction, and relubrication features. It accommodates radial and bidirectional axial loads while compensating for angular misalignment.

SKF 22216 EK at simmering.pl

SKF spherical roller bearings and other industrial bearing components are available through simmering.pl, a specialist supplier of rolling bearings, industrial seals, and mechanical components.

We serve industrial companies, maintenance departments, workshops, and technical purchasing teams.

Our warehouse and order processing facilities are located in Lublin, Poland. We provide worldwide shipping from stock in Poland.

Assistance with bearing identification and selection is available based on complete manufacturer designations and application requirements.