NU2238-E-M1A

The NU2238-E-M1A cylindrical roller bearing stands as a robust solution for demanding industrial applications, engineered for maximum reliability under high radial loads. This single-row bearing features the NU design, meaning it has two integral flanges on the outer ring but none on the inner ring. This design enables the shaft to undergo axial displacement relative to the housing in both directions, making it a "floating" bearing crucial for accommodating thermal expansion or mounting inaccuracies. The 'E' designation signifies an increased load capacity design, incorporating a greater number and size of rollers than standard versions, which directly translates to a longer service life and enhanced performance in heavy-duty machinery like large gearboxes, rolling mills, and electric motors.

With precise metric dimensions of 190mm (bore) x 340mm (outer diameter) x 92mm (width), the NU2238-E-M1A is built for stability and speed. The 'M1A' suffix indicates the use of a high-quality, two-piece solid brass cage, which is outer ring-guided (rib-guided). Brass cages offer superior strength and are highly resistant to vibration and high temperatures, making them ideal for high-speed operation and shock loads. Furthermore, this bearing design, often featuring a larger than normal C3 internal clearance (depending on the specific manufacturer's suffix), is optimized to prevent undue stress and excessive heat generation, even at its reference speed rating of up to 1300 r/min and limiting speed rating of 3000 r/min. Its combination of high load ratings and robust components ensures enduring, low-maintenance operation across a diverse range of challenging environments.

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