NUP 248 MA

The NUP 248 MA is a heavy-duty, single-row cylindrical roller bearing renowned for handling exceptionally high radial loads in applications that demand both speed and robust performance. Its specific 'NUP' design is key: the outer ring features two integral flanges, while the inner ring has one integral flange and a corresponding loose flange (denoted by the 'P' in NUP and a loose rib in the inner ring assembly). This configuration is critical as it allows the bearing to precisely locate the shaft in both axial directions, simultaneously carrying light thrust loads. The bearing's large dimensions-240 mm bore, 440 mm outside diameter, and 72 mm width-confirm its use in large-scale machinery, where its high static and dynamic load ratings are essential for reliability.

The inclusion of the 'MA' suffix indicates a bearing with a robust, machined brass cage, which is land-guided. This advanced cage design is preferred over standard stamped steel cages for its superior mechanical properties, improved roller guidance, and enhanced performance at higher temperatures and operating speeds (up to 2,200 r/min limiting speed for oil lubrication). As a separable bearing, with the ring and roller/cage assembly easily detachable, the NUP 248 MA simplifies complex fitting and removal processes, making it a maintenance-friendly choice. Its combination of high-rigidity, high load-carrying capacity, and bi-directional axial location makes it a staple for critical, demanding applications in industries such as mining, steel production, and large gear reduction units.

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