Cylindrical Roller Bearings SKF NUP304 ECP

The SKF NUP304 ECP cylindrical roller bearing, measuring 20x52x15 mm, offers a compact, fixed-type bearing solution capable of withstanding high radial loads and providing axial guidance on both sides.

The NUP304 ECP cylindrical roller bearing is a single-row rolling bearing with an optimised internal design in the SKF Explorer series. The combination of cylindrical rollers and line contact enables the transmission of high radial loads whilst maintaining high rigidity. Designed as an open bearing, this model can be specifically integrated into existing lubrication circuits. A polyamide cage guides the rollers precisely and ensures smooth running within the permissible temperature range of -30 to +120 degrees.

What guiding functions does the NUP304 ECP cylindrical roller bearing perform as a fixed bearing?

This rolling bearing is used when bearing locations must simultaneously withstand high radial forces and axial guidance forces from both directions. Thanks to two fixed flanges on the outer ring, a fixed flange on the inner ring and a loose flange disc, the NUP design functions as a fully-fledged fixed bearing. The design is suitable for rotating systems in which the shaft is to be fixed axially with precision without an additional counter-bearing and where a lubricating oil or grease system is in place.

What are the advantages of the polyamide cage in the NUP design?

Compared with solid metal cages, the polyamide cage reduces the rotating mass and the internal friction of the rolling elements. This promotes favourable running characteristics at varying speeds. When designing the system, it is important to note that the open bearing requires a clean installation environment, as dirt particles could enter the raceways directly. The standard radial bearing clearance, together with dimensional accuracy to tolerance class P0 and increased running accuracy to P6, ensures a precise fit on 20 mm shafts.