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Double row cylindrical roller bearing, steel rings · SKF NN 3028/SPW33
SKF NN 3028/SPW33 cylindrical roller bearing

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SKF NN 3028/SPW33 cylindrical roller bearing

Manufacturer Part NumberNN 3028/SPW33Also searched as: NN3028/SPW33
Brand
SKF
Category
Bearings
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Since 1945 · Martínez, Buenos Aires, Argentina

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How to read SKF NN 3028/SPW33

NN 30Series
Cylindrical roller bearings, NN 30 series. For the same bore, each series has a different outside diameter and width.
28Bore
140 mm bore: 28 × 5.
SPW33Suffix
SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).

NN 3028 is the standard (ISO) basic designation: it defines the type, the series and the bore.

Description

SKF NN 3028/SPW33 is a reference of cylindrical roller bearing, within Bearings. Request a quote for NN 3028/SPW33 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

SKF cylindrical roller bearings of the NN series with SPW suffix are high-precision components designed to withstand high radial loads and considerable speeds. Their double-row design and robust construction make them ideal for demanding applications in industrial machinery. At MR Accesorios Industriales we supply this line for the Argentine market, offering technical advice to select the right bearing according to operating conditions.

The designation of these bearings is interpreted from the letters and numbers that make it up. The prefix NN indicates that it is a double-row cylindrical roller bearing, with a radial load capacity higher than single-row ones. The SPW suffix indicates a special execution: the final W refers to a stamped steel cage, while SP may indicate tighter dimensional tolerances or reduced internal clearance, according to SKF standard. A specific example is the NN 3028/SPW33, where 3028 defines the main dimensions and the suffix 33 refers to a special heat treatment for high temperatures. Knowing this nomenclature allows you to quickly identify the bearing's characteristics.

These bearings find application in industries where high performance and reliability are required. In Argentina, they are used in machine tools, grinding machine spindles, printing equipment, compressors, high-pressure pumps and speed reducers. They are also present in the steel, cement and mining industries, where radial loads are intense and working conditions are severe. Their ability to withstand high speeds makes them suitable for large electric motors and turbines. In the railway and marine fields, they are used in shafts and transmissions that require a long service life and reduced maintenance.

To correctly select a bearing from this series, it is essential to consider the radial load, rotation speed and environmental conditions. Sealing is a key aspect: if the environment contains dust, moisture or particles, it is recommended to choose variants with seals or shields. The internal clearance must be adequate to compensate for thermal expansion and ensure uniform load distribution between the rows. Lubrication, whether with grease or oil, must be chosen according to temperature and speed; incorrect lubrication can cause premature failures. During assembly, it is essential to ensure precise alignment and use appropriate tools to avoid damage to the rollers and raceways.

Regarding equivalences and interchangeability, double-row cylindrical roller bearings with similar suffixes can be found from other manufacturers, but dimensions and tolerances may vary. It is important to verify that the technical characteristics match those of the original bearing, paying attention to the bore, outer diameter and width, as well as the internal clearance and load capacity. Interchangeability between brands is not always direct; it is recommended to consult a specialist before replacing one bearing with another from a different manufacturer. At MR Accesorios Industriales we have the experience to advise you on this comparison.

If you need a quote for an SKF cylindrical roller bearing of the NN series with SPW suffix, or any other component for your equipment, write to us via WhatsApp. At MR Accesorios Industriales we provide personalized attention and help you find the right solution for your application. Send us the complete bearing code and we will respond promptly with the information you need.

Dimensions

Bore
140mm

Frequently Asked Questions

What does the SPW suffix mean on an SKF bearing?
The SPW suffix indicates a special execution: the W refers to a stamped steel cage, while SP may indicate tighter dimensional tolerances or reduced internal clearance. It is important to consult the technical data sheet to confirm the exact characteristics.
Where are double-row cylindrical roller bearings used?
They are used in applications requiring high radial load capacity and high speeds, such as machine tools, spindles, compressors, pumps, reducers and equipment in the steel, cement and mining industries, among others.
How can I request a quote for this bearing?
You can send us the complete bearing code via WhatsApp. At MR Accesorios Industriales we will respond with the information you need to evaluate the purchase. We can also advise you if you need an equivalent alternative.
Request a quote for NN 3028/SPW33 via WhatsApp
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