NU 307 ECM

The NU 307 ECM is a high-performance single row cylindrical roller bearing engineered to handle substantial radial loads in high-speed environments. Featuring a standard 35mm bore, 80mm outside diameter, and 21mm width, this bearing belongs to the EC design series, which incorporates an optimized internal geometry to improve lubricant film formation and ensure cooler running temperatures. The "M" suffix indicates a machined brass cage, which provides superior strength and durability compared to standard steel or polyamide alternatives, making it a go-to choice for heavy-duty industrial machinery, electric motors, and gearboxes where reliability is paramount.

From a technical standpoint, the NU-type design is characterized by two integral flanges on the outer ring and a smooth, flangeless inner ring. This specific configuration allows the bearing to accommodate axial displacement in both directions, effectively compensating for shaft expansion or contraction caused by thermal changes. Its separable nature simplifies the installation process, as the inner and outer components can be mounted independently. With a robust dynamic load rating and a high limiting speed (often reaching up to 11,000 r/min depending on lubrication), the NU 307 ECM balances precision with ruggedness, ensuring a long service life even under demanding operational conditions.

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