Description

FAG N 305 ETVP2 Cylindrical Roller Bearing

FAG N 305 ETVP2 Cylindrical Roller Bearing generally have a very high radial load-carrying capacity due to the large contact area between the rollers and raceways, making them suitable for high-speed applications. In addition, some types allow limited axial displacement between the inner and outer rings, which helps reduce stress caused by thermal expansion in shafts that are axially fixed.

However, with the NUP design, such as the FAG N 305 ETVP2 Cylindrical Roller Bearing, the presence of ribs on both sides enables the bearing to accommodate axial loads in both directions. This differs from N or NU cylindrical roller bearings, which have limited or no axial load-carrying capacity.

Why Is the Loose Rib Important?

The loose rib in a cylindrical roller bearing with guiding ribs plays an important role in allowing controlled axial movement between the shaft and housing. The rib arrangement permits a certain amount of relative axial movement before the bearing establishes axial positioning.

This mechanism allows the NUP bearing to combine a high radial load-carrying capacity with the ability to locate the shaft axially in both directions, making it suitable for applications where both radial loads and bidirectional axial positioning are required.

Axial Load Considerations

Although NUP bearings can accommodate axial loads in both directions, they are still primarily designed to carry radial loads. Axial loads should generally be kept within the permissible limits. Excessive axial loading can create excessive contact pressure between the rollers and the ribs, resulting in increased heat generation and accelerated wear.

Therefore, in practical applications, engineers should check the manufacturer’s catalog for the applicable Y-factor and the Fa/Fr ratio before selecting the bearing for actual operation. This is particularly important in applications involving continuous axial loads, such as helical gear systems.