The simplest type with a single ball screw nut.

 
Model No. Screw 
shaft 
outer 
diameter

d
Lead


Ph
Ball 
center-to-
center 
diameter

dp
 
Outer 
diameter

D
g6
Flange 
diameter


D1
Overall 
length


L1
Basic load rating Detail specifications CAD Dimensional drawing
Dynamic 
rating

Ca
Static 
rating

C0a
2D 
(DXF)
3D
mm mm mm mm mm mm kN kN
BNF 1604-3 16 4 16.5 36 59 45 5.1 10.5
BNF 1605-2.5 16 5 16.75 40 60 41 7.4 13.9
BNF 1605-3 16 5 16.75 40 60 51 8.7 16.8
BNF 1605-5 16 5 16.75 40 60 56 13.5 27.8
BNF 1606-2.5 16 6 16.8 40 60 44 7.5 14
BNF 1606-5 16 6 16.8 40 60 62 13.5 28
BNF 1610-1.5 16 10 16.8 40 63 42 4.8 8.5
BNF 1810-2.5 18 10 18.8 42 65 69 7.8 15.9
BNF 1810-3 18 10 18.8 42 65 75 9.2 19.1
BNF 2004-2.5 20 4 20.5 40 63 37 4.8 10.9
BNF 2004-5 20 4 20.5 40 63 49 8.6 21.8
BNF 2005-2.5 20 5 20.75 44 67 41 8.3 17.4
BNF 2005-3 20 5 20.75 44 67 52 9.7 21
BNF 2005-3.5 20 5 20.75 44 67 45 11.1 24.5
BNF 2005-5 20 5 20.75 44 67 56 15.1 35
BNF 2006-2.5 20 6 20.75 48 71 44 8.3 17.5
BNF 2006-3 20 6 20.75 48 71 56 9.7 21
BNF 2006-3.5 20 6 20.75 48 71 50 11.1 24.5
BNF 2006-5 20 6 20.75 48 71 62 15.1 35
BNF 2008-2.5 20 8 21 46 74 60 11.1 21.9