Model No. Ball screw unit Ball spline Detail 
specifi-
cations
CAD Dimensional
drawing
Screw 
shaft
outer 
diameter

d
Lead


Ph
Ball
center-to-
center 
diameter

dp
Outer 
diameter

D
g6
Flange 
diameter


D1
Length


L1
Flange 
diameter


D5
Length


L2
2D (DXF) 3D
mm mm mm mm mm mm mm mm
NS 0812A 8 12 8.4 32 44 28.5 32 25
NS 1015A 10 15 10.5 36 48 34.5 42 33
NS 1616A 16 16 16.65 48 64 40 51
 
50  
 
  0
–0.2
NS 2020A 20 20 20.75 56 72 48 58
 
63  
 
  0
–0.2
NS 2525A 25 25 26 66 86 58 65
 
71  
 
  0
–0.3
NS 3232A 32 32 33.25 78 103 72 77
 
80  
 
  0
–0.3
NS 4040A 40 40 41.75 100 130 88 100
 
100  
 
  0
–0.3