Cylindrical Roller Bearings SKF NU230 ECJ/C3

The SKF NU230 ECJ/C3 cylindrical roller bearing, with a 150 mm bore and increased bearing clearance, offers high radial load-carrying capacity when used as a non-locating bearing.

The SKF NU230 ECJ/C3 cylindrical roller bearing is a single-row rolling bearing designed for high radial loads in mechanical engineering. Thanks to the NU design, the outer ring has two solid flanges, whilst the inner ring is flangeless. This design allows for free axial length compensation directly within the bearing. The open bearing features an optimised internal design and a sheet steel cage that guides the rollers.

In which installation situations does the NU230 ECJ/C3 cylindrical roller bearing prove its worth?

This cylindrical roller bearing is primarily used where purely radial forces are absorbed and thermal length changes in the shaft need to be compensated for. It is suitable for applications with separate fixed and floating bearing arrangements in heavy-duty shaft mountings. As the inner ring can be removed from both ends, the bearing can be fitted in sections. This simplifies installation and maintenance work within the housing, whilst the P6 running accuracy ensures precise concentricity.

What is the purpose of the increased C3 bearing clearance?

The C3 designation indicates a slightly increased radial clearance compared with the standard version. This increased clearance helps to prevent the rollers from seizing up if temperature differences occur between the inner and outer rings during operation. Tight fits on the 150 mm shaft also reduce the residual radial clearance after press-fitting. Within the temperature range of -30 to +150 degrees, the C3 clearance thus ensures reliable operation under continuous operational loads.