NU 338 ECM

The NU 338 ECM is a high-performance single row cylindrical roller bearing engineered for heavy-duty industrial applications where radial load capacity is a critical priority. Featuring a 190mm bore, 400mm outside diameter, and 78mm width, this specific NU-design configuration is built with two integral flanges on the outer ring and none on the inner ring. This unique structure allows the bearing to accommodate significant axial displacement of the shaft relative to the housing in both directions, making it an ideal choice for "floating" bearing arrangements. The "EC" designation signifies an optimized internal geometry that enhances load distribution and reduces friction, directly contributing to a cooler-running operation and extended service life in demanding environments.

Performance-wise, the NU 338 ECM stands out due to its robust machined brass cage (M), which is roller-centered to provide superior stability during high-speed rotations and high-vibration conditions. With a basic dynamic load rating of approximately 1140 kN and a limiting speed of 2000 r/min, this bearing is frequently deployed in large electric motors, gearboxes, and heavy industrial machinery where reliability is non-negotiable. The separable design of the NU 338 ECM not only simplifies the mounting and dismounting process but also allows for independent installation of the inner and outer rings, significantly reducing maintenance downtime for complex mechanical systems.

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