NJ 230 ECM

The NJ 230 ECM is a single-row cylindrical roller bearing engineered for heavy radial loads and high-speed operation in demanding industrial machinery. The "NJ" prefix signifies its configuration: the outer ring features two integral guiding flanges, while the inner ring has only one. This specific design allows the bearing to accommodate limited axial displacement of the shaft in one direction, while simultaneously providing a measure of axial location. With precise dimensions of a 150 mm bore, 270 mm outer diameter, and a 45 mm width, this bearing offers an impressive balance of high stiffness and compact cross-section, making it a powerful component in applications such as large gearboxes, electric motors, and wind turbine assemblies.

The designation suffixes indicate its performance capabilities: E denotes an enhanced design for increased roller size and number, resulting in a significantly higher load carrying capacity compared to earlier designs. The CM suffix points to a high-strength, machined brass cage centered on the rollers, ensuring robust roller guidance, reduced friction, and thermal stability at its high limiting speed of 2,800 r/min. The cylindrical rollers utilize a logarithmic profile, which effectively mitigates edge stresses and the sensitivity to minor shaft misalignment, ensuring a better distribution of the heavy static load rating (600 kN), ultimately leading to longer service life and enhanced operational reliability.

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