Cylindrical Roller Bearings SKF NU307 ECP

The SKF NU307 ECP cylindrical roller bearing, a separable single-row bearing with a polyamide cage, offers high radial load capacity with a 35 mm bore and an 80 mm outer diameter.

The NU307 ECP cylindrical roller bearing is a single-row rolling bearing from SKF’s Explorer range, featuring an optimised internal design. This design is intended to accommodate high radial forces in industrial applications. With key dimensions of 35 mm bore diameter, 80 mm outer diameter and 21 mm width, the open design is suitable for standard installation spaces in mechanical engineering. SKF manufactures this bearing with standard radial clearance and high running accuracy for industrial use.

What is the NU307 ECP cylindrical roller bearing suitable for in practice?

Design engineers primarily use this cylindrical roller bearing in bearing arrangements where a purely floating bearing function is required. The NU design allows the inner ring to be removed from both sides, so that axial length changes in the shaft are compensated for directly within the bearing without any constraint. Typical applications include rigid shaft mountings subject to predominantly radial loads and thermal expansion. The open bearing design allows for targeted lubrication with oil or grease via the surrounding housing system.

What are the key features of the cage design and precision?

The integrated polyamide cage guides the rollers with low friction and reduces the weight of the rolling element assembly. Together with the permissible temperature range of –30 to +120 degrees, the bearing is suitable for demanding operating environments. As the inner ring can be separated from the pre-assembled outer ring and roller set, assembly is simplified: the inner and outer rings can be fitted separately onto the shaft and housing. The running accuracy, rated to Class P6 or ABEC 3, ensures smooth concentricity.