1. Product Overview The NJ2311-E-XL-M1 single row cylindrical roller bearing adopts NJ semi-locating structure, optimized E roller profile, XL enhanced load design and M1 solid machined brass cage. It can bear ultra-heavy radial load and limited unidirectional axial thrust load, separable inner and outer ring structure simplifies disassembly and maintenance, widely matched to heavy-duty gearboxes, mining equipment and construction machinery under continuous heavy impact