Cylindrical roller bearing SKF NNU 4930 B/SPW33

SKF NNU 4930 B/SPW33 is a cylindrical roller bearing reference, within Bearings. Request a quote for NNU 4930 B/SPW33 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The SKF NNU series cylindrical roller bearing is a component with high radial load capacity, designed to withstand high loads and considerable speeds. Its two-row construction and flangeless inner ring allow some freedom of axial displacement, ideal for applications where the shaft expands due to temperature. It is used in heavy machinery, gearboxes, rolling mills and industrial equipment that demand robustness and precision.

The NNU designation identifies two-row cylindrical roller bearings with a flangeless inner ring and a flanged outer ring. The number that follows, for example 4920, indicates the size and dimensional series. The suffix B indicates a design with a machined brass cage, which provides strength and precise guidance. SPW33 is a combination of special tolerances and high-quality grease lubrication, suitable for severe conditions. Thus, a code such as NNU 4920 B/SPW33 summarizes dimensions, execution and lubrication.

These bearings are used in industries such as steel, cement, mining and pulp, where equipment operates with intense radial loads and moderate to high speeds. They are also present in large gearboxes, gear cases, paper machines and rolling trains. In Argentina, they are common in grinding plants, oil extractors and power transmission systems that require high reliability and long service life.

To select the right bearing, take into account the radial load, rotation speed and environmental conditions. Assembly must be carried out with suitable tools, avoiding direct blows on the rollers. Alignment between shaft and housing is critical to avoid parasitic loads. The lubrication indicated by the SPW33 suffix is already incorporated, but it is essential to respect the relubrication intervals according to the manufacturer. Sealing of the assembly protects against external contaminants.

As for equivalents, SKF NNU series bearings can be interchanged with products from other brands that follow the same dimensional designation, such as FAG, NSK or NTN. However, tolerances and internal clearance may vary between manufacturers, so compatibility must always be verified before replacing. MR Accesorios Industriales carries SKF as an official brand, guaranteeing authenticity and the brand's technical support.

If you need a quote for an SKF NNU series cylindrical roller bearing, send the full code on WhatsApp to MR Accesorios Industriales. Our technical team advises you so you can choose the right execution for your application. With more than 80 years in the market, we provide reliable solutions for Argentine industry.

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