SKF 24015 CC/W33 75x115x40 mm - Spherical Roller Bearing

SKF 24015 CC/W33 75x115x40 mm is a double-row self-aligning spherical roller bearing designed to accommodate heavy radial loads and axial loads in both directions. The bearing features a cylindrical bore with a diameter of 75 mm, an outside diameter of 115 mm and a width of 40 mm. Its CC internal design incorporates symmetrical spherical rollers, while the W33 suffix indicates an annular lubrication groove and lubrication holes in the outer ring.

Technical Specifications - SKF 24015 CC/W33

Technical note: The load ratings and speed values above are catalog values for the specified SKF bearing designation. They are not guaranteed operating limits for every installation. Final bearing selection must account for actual loads, lubrication, temperature, fits and operating conditions. Current manufacturer documentation should be checked before engineering use.

What Does SKF 24015 CC/W33 Mean?

The designation 24015 CC/W33 identifies the bearing series, bore size, internal construction and lubrication arrangement.

• SKF - bearing manufacturer.

• 24015 - spherical roller bearing series and size designation.

• 24 - dimensional series of the spherical roller bearing.

• 015 - bore code corresponding to 75 mm.

• CC - SKF internal design incorporating symmetrical spherical rollers.

• W33 - annular lubrication groove and three lubrication holes in the outer ring.

The designation 24015 CCW33 is also encountered as a simplified commercial spelling of 24015 CC/W33.

When ordering, the complete manufacturer's designation should be retained.

Internal Construction and Operating Principle

The SKF 24015 CC/W33 bearing features two rows of symmetrical spherical rollers operating against a common spherical raceway in the outer ring.

This construction allows the inner ring to adjust its angular position relative to the outer ring within the bearing's permissible misalignment range.

CC Internal Design and Cage Construction

The SKF CC design uses two window-type steel cages, an inner ring without guiding flanges and a floating guide ring.

This arrangement provides guidance for the two rows of spherical rollers during operation.

The bearing's internal geometry is designed to support heavy radial loading while accommodating axial loads in both directions.

Self-Aligning Capability

The spherical outer ring raceway allows the bearing to compensate for a certain degree of angular misalignment.

This capability can be valuable when misalignment results from:

• Shaft deflection.

• Housing deformation.

• Assembly inaccuracies.

• Mechanical loading.

• Thermal effects on the surrounding structure.

However, the self-aligning design does not permit unlimited shaft misalignment.

The allowable angular displacement depends on the bearing arrangement, operating load and surrounding components.

W33 Lubrication System - Groove and Lubrication Holes

The W33 suffix indicates a lubrication arrangement consisting of:

• An annular lubrication groove on the outside surface of the outer ring.

• Three lubrication holes in the outer ring.

• The possibility of supplying lubricant through a suitably designed bearing housing.

This arrangement facilitates relubrication in industrial bearing assemblies.

Why Is W33 Important?

Proper lubrication helps maintain a lubricating film between the rolling elements and raceways.

The W33 arrangement can make it easier to supply grease or oil to the bearing through the housing.

However, W33 does not mean that the bearing is permanently lubricated or sealed.

The lubrication method, lubricant quantity and relubrication intervals must be selected according to the application.

SKF 24015 CC/W33 - Load Ratings and Operating Speeds

The following values are catalog specifications for SKF 24015 CC/W33.

Basic Dynamic Load Rating C

The basic dynamic load rating describes the bearing's load-carrying capacity under standardized rotating conditions.

It is used in bearing life calculations.

A value of 181 kN does not mean that the bearing can operate indefinitely under a constant load of 181 kN.

Basic Static Load Rating C0

The basic static load rating relates to the bearing's resistance to permanent deformation at the rolling element and raceway contacts under defined static loading conditions.

For SKF 24015 CC/W33, the stated catalog value is 232 kN.

Fatigue Load Limit Pu

The fatigue load limit is a parameter used in advanced bearing life calculations.

For the specified bearing, the stated catalog value is 28.5 kN.

Reference Speed and Limiting Speed

The reference speed is associated with standardized thermal and lubrication conditions.

The limiting speed represents a mechanical speed-related restriction under defined conditions.

Neither value should be interpreted as an automatically permissible continuous operating speed for every installation.

Actual operating speed depends on lubrication, load, temperature, internal clearance and mounting conditions.

What Loads Can SKF 24015 CC/W33 Accommodate?

The SKF 24015 CC/W33 spherical roller bearing is primarily designed to accommodate substantial radial loads.

It can also support axial loads acting in both directions.

The two rows of spherical rollers provide a load-carrying arrangement suitable for demanding industrial applications.

Radial Loads

Radial loads act perpendicular to the shaft axis.

Spherical roller bearings are commonly selected for machinery exposed to heavy radial loading, especially where shaft deflection or alignment variation must also be considered.

Axial Loads

Axial loads act along the shaft axis.

The SKF 24015 CC/W33 can accommodate axial loads in either direction, subject to the limits established by bearing calculations and operating conditions.

Combined Loads

The bearing can operate under combined radial and axial loading.

Correct selection requires consideration of equivalent bearing loads, required service life, operating speed and lubrication.

SKF 24015 CC/W33 vs Other 24015 Bearing Versions

These versions should not be considered automatically interchangeable simply because they belong to the same bearing size family.

Differences in bore design, internal clearance and sealing arrangements can affect mounting methods and operating conditions.

Cylindrical Bore vs Tapered Bore

The SKF 24015 CC/W33 features a cylindrical bore.

A version designated CCK30/W33 incorporates a tapered bore with a taper of 1:30.

Tapered bore bearings require different mounting procedures and may be installed using appropriate sleeves or tapered shaft seats.

Normal Clearance vs C3 Clearance

The designation 24015 CC/W33 does not include a C3 suffix.

C3 indicates greater-than-normal internal radial clearance.

Internal clearance affects the bearing's behavior after mounting and during operation.

The correct clearance must be selected according to shaft and housing fits, operating temperature and application requirements.

Open vs Sealed Construction

SKF 24015 CC/W33 is an open bearing without integral contact seals.

The bearing arrangement must therefore provide suitable protection against contaminants and lubricant leakage.

A sealed version has a different construction and may require different installation considerations.

Typical Applications of SKF 24015 CC/W33 Spherical Roller Bearings

Spherical roller bearings of this type may be used in appropriately engineered industrial machinery.

Potential applications include:

• Belt conveyors.

• Roller conveyors.

• Industrial gearboxes.

• Industrial fans.

• Manufacturing machinery.

• Material handling equipment.

• Mining and quarrying machinery.

• Rotating shaft assemblies exposed to substantial radial loads.

These are general examples of applications for spherical roller bearings.

They do not constitute confirmed OEM compatibility with a particular machine or gearbox.

Industrial Gearboxes

Spherical roller bearings may be used in gearbox assemblies where substantial loads and shaft alignment conditions require this type of bearing.

The suitability of SKF 24015 CC/W33 depends on the gearbox design, operating loads, speed and lubrication system.

Conveyors and Material Handling Equipment

Conveyor systems may expose bearings to significant radial loading, vibration and shaft deflection.

The self-aligning capability of spherical roller bearings can be advantageous in correctly designed conveyor assemblies.

Industrial Fans

Industrial fans may require bearings capable of supporting radial loads while accommodating certain shaft alignment variations.

Bearing selection must also account for rotational speed, temperature and vibration.

Heavy Industrial Machinery

Spherical roller bearings are commonly used in equipment requiring robust rolling bearing arrangements.

The actual suitability of SKF 24015 CC/W33 must be confirmed through engineering calculations.

How to Select SKF 24015 CC/W33 Correctly

Before selecting this bearing, verify:

1. Manufacturer designation SKF 24015 CC/W33.

2. Bore diameter of 75 mm.

3. Outside diameter of 115 mm.

4. Width of 40 mm.

5. Cylindrical bore construction.

6. CC internal design.

7. W33 lubrication groove and holes.

8. Required internal clearance.

9. Radial and axial operating loads.

10. Required bearing life.

11. Shaft and housing fits.

12. Operating speed.

13. Lubrication method.

14. Operating temperature.

15. Contamination protection and sealing arrangement.

16. Expected shaft deflection and misalignment.

Is SKF 24015 CC/W33 Suitable for Heavy Radial Loads?

Yes. Spherical roller bearings are designed to accommodate substantial radial loads.

However, the suitability of this particular bearing depends on the magnitude and direction of the load and the required service life.

Can SKF 24015 CC/W33 Compensate for Shaft Misalignment?

Yes. Its self-aligning construction accommodates a certain degree of angular misalignment between the inner and outer rings.

The permissible misalignment must be verified for the actual operating conditions.

Is SKF 24015 CC/W33 Suitable for High-Speed Operation?

The bearing has defined catalog speed ratings.

However, whether a particular operating speed is acceptable depends on lubrication, temperature, loading and mounting conditions.

The catalog speed values should not be treated as universal continuous operating limits.

Installation and Maintenance of SKF 24015 CC/W33

Correct installation is essential for bearing performance and service life.

Shaft and Housing Preparation

Before installation:

• Check the shaft diameter and tolerances.

• Inspect the housing bore.

• Verify the surface condition of bearing seats.

• Remove contaminants and burrs.

• Confirm the required fits.

• Check the bearing designation and internal clearance.

Correct Mounting Procedure

During installation:

• Use suitable mounting tools.

• Apply mounting force only to the ring being fitted.

• Do not transmit installation force through the rolling elements.

• Avoid damaging the bearing raceways.

• Maintain cleanliness.

• Follow SKF mounting instructions for the specific bearing arrangement.

Lubrication

The bearing must receive suitable lubrication according to its operating conditions.

The W33 groove and lubrication holes allow lubricant to be supplied through an appropriately designed housing.

Lubricant selection should consider:

• Operating temperature.

• Rotational speed.

• Bearing load.

• Operating environment.

• Lubrication method.

• Relubrication intervals.

Maintenance and Inspection

During operation, monitor:

• Bearing temperature.

• Vibration.

• Noise.

• Lubricant condition.

• Contamination.

• Signs of abnormal wear.

Unusual vibration, temperature increases or noise may indicate incorrect lubrication, excessive loading, misalignment or bearing damage.

Protection Against Contamination

SKF 24015 CC/W33 is an open bearing.

The surrounding assembly must provide suitable protection against dust, moisture and other contaminants.

The W33 lubrication arrangement does not replace external sealing.

Frequently Asked Questions - SKF 24015 CC/W33

1. What are the dimensions of SKF 24015 CC/W33?

The bearing has a bore diameter of 75 mm, an outside diameter of 115 mm and a width of 40 mm.

2. Is SKF 24015 CC/W33 a spherical roller bearing?

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

3. What does CC mean in SKF 24015 CC/W33?

CC identifies an SKF internal design featuring symmetrical spherical rollers and window-type steel cages.

4. What does W33 mean?

W33 indicates an annular lubrication groove and three lubrication holes in the outer ring.

5. Does SKF 24015 CC/W33 have a tapered bore?

No. This version has a cylindrical bore. The CCK30/W33 version features a tapered bore.

6. Does SKF 24015 CC/W33 have C3 internal clearance?

The designation does not include the C3 suffix. Versions with greater-than-normal internal clearance have an additional clearance designation.

7. Can SKF 24015 CC/W33 compensate for shaft misalignment?

Yes. Its spherical roller construction allows compensation for a certain degree of angular misalignment between the bearing rings.

8. Can SKF 24015 CC/W33 accommodate axial loads?

Yes. It can accommodate axial loads in both directions within the limits established by bearing calculations and operating conditions.

9. Is SKF 24015 CC/W33 a sealed bearing?

No. It is an open bearing without integral contact seals.

10. Can SKF 24015 CC/W33 be relubricated?

Yes. The W33 design incorporates a lubrication groove and holes that allow lubricant to be supplied through a suitable bearing housing.

SKF 24015 CC/W33 - Key Product Information

SKF 24015 CC/W33 75x115x40 mm is a double-row self-aligning spherical roller bearing with a cylindrical bore, symmetrical rollers, steel cages and a W33 lubrication arrangement. Its construction accommodates substantial radial loads, axial loads in both directions and a certain degree of shaft misalignment. The bearing is intended for appropriately designed industrial applications.

The SKF 24015 CC/W33 spherical roller bearing is available from simmering.pl, a specialist supplier of industrial bearings and sealing products operated by TG Ersatzteile Polska Sp. z o.o. The company maintains a warehouse in Lublin, Poland, serving industrial customers, repair services and maintenance departments, with shipping across Poland and other European Union countries.