Cylindrical Roller Bearings SKF NU314 ECP

The SKF NU314 ECP cylindrical roller bearing, with dimensions of 70x150x35 mm, provides a separable support arrangement for high radial loads.

The SKF NU314 ECP cylindrical roller bearing is a single-row radial roller bearing in the Explorer design with an optimised internal construction. The bearing has a bore of 70 mm, an outer diameter of 150 mm and a width of 35 mm. Designed as an open bearing, it is suitable for use in externally lubricated systems. The integrated polyamide cage guides the cylindrical rollers smoothly and facilitates low-friction rolling of the rolling elements.

What function does the NU314 ECP cylindrical roller bearing perform as a non-locating bearing?

This bearing accommodates high radial forces and typically functions as a non-locating bearing in bearing arrangements. The NU design allows the inner ring to be removed from both sides. This enables axial length changes of the shaft relative to the housing to be compensated for with low friction within the bearing itself.

This design is primarily used in bearing arrangements subject to thermal shaft expansion. The free axial movement serves to prevent mechanical stress between the inner and outer rings during operation.

What role do the cage material and tolerance class play in the selection process?

The polyamide cage used in the bearing provides good elasticity and enables low-vibration operation within the permissible temperature range of –30 to +120 degrees. Furthermore, the cage’s low weight facilitates smooth start-up behaviour at varying speeds.

To ensure a precise fit, the bearing features dimensional accuracy in accordance with tolerance class Normal (P0/ABEC 1) as well as increased running accuracy of class P6 (ABEC 3). As the bearing is of an open design and the outer ring has no lubrication groove, the bearing housing must be sealed via the housing design and supplied with lubricant.