RV - Satellite Roller Screws
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The main elements of Rollvis RV (ground thread) satellite roller screws are the screw, the nut and satellite rollers.
This Rollvis satellite roller screw has multiple-start thread and the angle between the flanks is 90° with a triangular profile, the nut has an internal thread identical to that of the screw. Internally the rollers have a single-start thread with an angle the same as that of the nut, which ensures there is no axial movement between the nut and the rollers, the rollers do not therefore need to be recycled.
The flanks of the roller thread are convex and at each end of the rollers there is a cylindrical pivot and gear teeth. The pivots are mounted in the holes of the end rings, thus ensuring the rollers are equidistant. The end rings are floated in the nut body and axially secured with circlips. The gear teeth engage in gear wheels fixed in the nut which guides the rollers parallel to the axis to ensure perfect functioning.
Terms used in table - Ca = Dynamic Load / COa = Static Load