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Large-diameter steel spherical roller bearing with tapered bore · SKF 239/1180 CAKF/C3W33
Spherical roller bearing SKF 239/1180 CAKF/C3W33

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Spherical roller bearing SKF 239/1180 CAKF/C3W33

Manufacturer Part Number
239/1180 CAKF/C3W33
Brand
SKFOfficial brand
Category
Bearings
Subcategory
Spherical roller bearings

Other brands in this family

  • FAG
  • NTN
  • TIMKEN

Ask us about alternatives. Equivalence is verified for each reference and application.

SKF

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Description

SKF 239/1180 CAKF/C3W33 is a spherical roller bearing reference, within Bearings. Request a quote for 239/1180 CAKF/C3W33 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

SKF spherical roller bearings are self-aligning double-row components designed to withstand high radial loads and axial loads in both directions, even with misaligned shafts. Their spherical outer raceway allows the assembly to self-align, absorbing mounting errors or shaft deflection. They are used in heavy equipment where rigidity is not a priority but robustness and load capacity are. MR Accesorios Industriales supplies this line with technical advice to select the correct execution.

The designation of this series combines several suffixes that define its construction. The numeric prefix indicates the dimension series; for example, in 239/1060 CAKF/C3W33 and 239/1180 CAKF/C3W33, the 239 corresponds to a series of spherical roller bearings with a particularly reduced section. The letters CA identify the cage and roller guidance design, while K indicates a tapered bore. The final F indicates an execution with specific manufacturing characteristics. The suffix C3 establishes an internal radial clearance greater than normal, and W33 designates the presence of a lubrication groove and holes in the outer ring. Knowing these codes allows you to correctly interpret the bearing's behavior.

These bearings are used in industries where equipment operates with heavy loads and severe conditions. In Argentina, they are common in cement mills, aggregate crushers, paper machines, high-flow industrial fans, mining conveyor belts and earthmoving equipment. They also appear in large gearboxes and rotary kiln rollers. Their self-aligning capability makes them suitable for long shafts that undergo deflection, or for assemblies where perfect alignment between supports cannot be guaranteed. In continuous production plants, their robustness reduces downtime due to premature failures.

To select correctly, take into account the radial and axial load the bearing must withstand, as well as the rotation speed and environmental conditions. The tapered bore with suffix K requires a suitable adapter sleeve; the mounting practice must ensure the correct radial clearance, which in this case is C3, greater than standard. Lubrication is critical: the W33 groove and holes facilitate relubrication, but the lubricant must be chosen according to temperature and contamination. Initial alignment does not need to be perfect thanks to the self-aligning feature, but mounting with excessive permanent misalignment can reduce service life. Always verify clearance after mounting.

Regarding equivalences, spherical roller bearings are manufactured under international dimension standards, so a code from another brand with the same basic designation is usually interchangeable in terms of main dimensions. However, internal suffixes may vary between manufacturers: a C3 from one brand may not exactly match another's in terms of radial clearance. The same applies to cage designs. Therefore, when replacing a bearing, do not rely only on the series number; verify the operating conditions and consult a specialist. MR Accesorios Industriales can help you interpret the differences.

If you need to replace a bearing from this series, send us the complete code via WhatsApp. At MR Accesorios Industriales we advise you so you receive the correct execution for your application. With more than 80 years in the Argentine industrial market, we know the demands of each sector and can guide you in selection, mounting and lubrication. Write to us and we will quote you promptly.

This description provides guidance on the product type. Check the configuration and dimensions of this reference.

Dimensions

Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.

Frequently Asked Questions

What does the C3 suffix mean in a spherical roller bearing?
The C3 suffix indicates an internal radial clearance greater than normal. It is specified when the bearing will operate at elevated temperatures or with mounting fits that reduce clearance, to avoid excessive preload and ensure adequate lubrication.
How is a bearing with a tapered bore K mounted?
It is mounted on an adapter sleeve or directly on a tapered shaft. It is essential to control radial clearance during tightening, since excessive tightening reduces clearance and can damage the raceways. Follow the manufacturer's instructions and verify with feeler gauges.
What advantages does the W33 groove and holes offer?
The W33 designation indicates that the outer ring has a groove and three holes for lubrication. This allows the bearing to be relubricated easily and uniformly, extending its service life in applications with high loads or contaminated environments.
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