The NB Gonio Way RVF type consists of curved tracking bases with precisely ground V-grooves and flat installation surfaces, as well as a curved roller cage in which cross rollers are fitted. Precision rollers are employed as the rolling elements. Since the rolling elements do not recirculate, the frictional resistance will not vary significantly, providing curved movement with extremely low frictional resistance. > The flat installation surfaces of the RVF type do not require complicated machining of tables and beds when installing the product. As a result, machining costs can be reduced greatly. The precision grinding work and curved roller cage allow for extremely low frictional resistance. The negligible difference between starting and dynamic frictions allows the RVF type to follow minute movements accurately, realizing curved movement of high accuracy. > The curved V-grooves, which are finished with a precise grinding process, provide an accurate center of rotation. Furthermore, the products are composed to provide identical rotation centers when products of each size are installed to two axes. (Refer to Table H-17.) > Since NB Gonio Way employs a non-recirculating design, noise will not be generated at the circulating area. In addition, the curved roller cage realizes quiet operation without contact noise between the rolling elements. > Figure H-35 Structure of RVF Type Gonio Way Installation surfaceA-curved tracking baseEnd piece Installation surfaceCurved roller cage Installation surfaceB-curved tracking base H-58 >

SLIDEGUIDEBALLSPLINE ROTARYBALLSPL NB Mark NB MarkNB Mark NB MarkReference edgeReference plane of B-curved tracking baseReference plane of B-curved tracking base PRODUCTS Part Number Mutual Error between A and B Mutual Error between E and F > SLIDEBUSHSLIDEUNITSTROKEBUSH Mutual Error between C and D Mutual Error between H and I RVF2050-070 RVF2050-087 RVF2050-103 RVF2050-120 > Reference plane of A-curved tracking base RVF3070-085 10 10 RVF3070-110 RVF3100-125 RVF3100-160 > B AC D EFHI Inside section SLIDEROTARYBUSH rotating angle SLIDESHAFT L: travel life (106round trips) :rotating angle (degree)f...

Reference edge(NB mark side) Reference edge of the bed > Reference edge(NB mark side) Reference edge of the bed Reference edge of the bedReference edge of the table Adjustment screw Position of the curved roller cage Position of the curved roller cage Position of the curved roller cage > * "Slightly strong torque" here means slightly stronger than the torque at which the oscillation of the test indicator is stabilized at the minimum value when the table is moved right and left, or when pressure is applied to the rolling direction while the test indicator is attached to the side face (reference...

SLIDEGUIDEBALLSPLINE ROTARYBALLSPL Table H-16 Recommended Tightening Torque for Mounting Bolts Unit/N m > I NESTROKEBALLSPLINETOPBALL Nominal Designation of Screw Tightening Torque M2.5 0.5 M3 1.1 (When using stainless-steel screw A2-70 on aluminum seating for tightening) > Figure H-40 Installation Procedure (2) > ghi SLIDEBUSHSLIDEUNITSTROKEBUSH Edge reference plate IndicatorRolling direction Edge reference plate SLIDEROTARYBUSH Regulating screw SLIDESHAFT SLIDE WAY/GONIO WAY SLIDE TABLEMINIATURE SLIDEACTUATORSLIDESCREW

NB gonio ways are lubricated using lithium soap grease prior to shipment, so they can be used immediately. Periodic application of a similar type grease is recommended depending on the operating conditions. NB also provides low dust generation grease for the linear system. Please refer to page Eng-20 for further details. End pieces are attached to each end of the NB gonio way to prevent removal of the curved roller cage. Do not use as a mechanical stopper. > PRODUCTS Dropping a NB gonio way may result in scratches or dents on the raceway surface, preventing smooth motion and affecting accuracy....

Part number configurationExample) >

SLIDEGUIDEBALLSPLINE ROTARYBALLSPL (T)L -0.1-0.3 (T) (T)L -0.1-0.3 (T) NMxPPS 1 1 NMxPPS I NESTROKEBALLSPLINETOPBALL 0-0.1 0-0.1 E B B E PRODUCTS R 2 SLIDEBUSHSLIDEUNITSTROKEBUSH 1 R (Radius from rotation center) R 2 H 1 H A 0-0.3 G (Radius from rotation center ) R D 1 2 h h G B-curved tracking baseA-curved tracking baseA-curved tracking baseB-curved tracking baseConstructed Dimension (One set includes A-curved tracking bases (2), B-curved tracking bases (2), curved roller cages (2), end pieces (8), and installation referense plate (2).) > SLIDEROTARYBUSH allowable Basic Load Rating Weight size...