Roller Screw Accuracy and Installation
NRS planetary roller screws are produced in quality classes according to ISO 1, 3 and 5 standards. The summary of the characteristics and their allowable error are reported below.
|Accuracy Class||Tolerance* (µm)|
*Measured on a thread length of 315mm
|EFFECTIVE THREAD LENGTH Lu||ACCURACY CLASS|
|From (mm)||To (mm)||G1||G2||G5|
|Epm (µm)||Vup (µm)||Epm (µm)||Vup (µm)||Epm (µm)||Vup (µm)|
NRS planetary roller screws are precision components. They must be handled with care before and during installation to prevent the units from carrying radial loads or moments since either of these will impair the proper functioning and reduce the life of the system, or even cause the system to fail.
Nook engineers are at your disposal to address any concerns for the design of the adjacent construction and the bearing arrangement to maximize the usefulness of the NRS planetary roller screws.Figure 1