
Combined bearings with needle type RAX Nadella
Nadella is able to offer a wide range of needle roller bearings, in the rich catalog it offers a diversified stock for types and sizes, which guarantees solutions for all applications, from those with high load capacities to those where the '' need for small dimensions or precision: needle roller bearings, needle roller bearings with cage or juxtaposed, rollers and idlers, thrust bearings, combined and precision bearings with adjustable axial preload.
In particular, the combined bearings type RAX and derivatives, for example, best express the construction qualities of Nadella and are a product that guarantees compactness and ease of use. They are in fact made in a single piece, making them easy to handle and to assemble. They can simultaneously withstand a radial and an axial load in one direction only thanks to the simultaneous presence of a needle roller (or roller) axial bearing and a needle roller radial cage, assembled in the common outer ring.
The load capacities are high even for the most demanding applications. The outer ring can be solid or made of sheet metal (RAX700 which guarantees minimum bulk), with or without bottom and with eventual retaining washer on the thrust bearing. The sizing calculations will cover the axial part and the radial part separately.
The operating independence of the radial bearing and thrust bearing avoids any interaction on the rotation accuracy (any axial expansion of the shaft does not affect the radial accuracy). Typical applications on machine tools include: pinion support in rack-and-pinion steering boxes or in transmissions between engine and gearbox in cars, gearboxes on boring machines, worm shaft support, feed engagement groups on cantilever milling machines, etc., but also supports on agricultural machines, textile and printing machines, motors and compressors and mechanics in general.