Double-nut Preload Model BNFN

The most common type with a preload provided via a spacer between the two combined ball screw nuts to eliminate backlash.

 
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
BNFN 1605-3 16 5 16.75 40 60 96 8.7 16.8
BNFN 1605-5 16 5 16.75 40 60 106 13.5 27.8
BNFN 1810-2.5 18 10 18.8 42 65 119 7.8 15.9
BNFN 1810-3 18 10 18.8 42 65 135 9.2 19.1
BNFN 2006-3 20 6 20.75 48 71 110 9.7 21
BNFN 2006-3.5 20 6 20.75 48 71 98 11.1 24.5
BNFN 2006-5 20 6 20.75 48 71 122 15.1 35
BNFN 2805-7.5 28 5 28.75 55 85 134 24.8 73.8
BNFN 2806-7.5 28 6 28.75 55 85 158 24.8 73.8
BNFN 2810-2.5 28 10 29.75 65 106 146 24 48.2
BNFN 3205-7.5 32 5 32.75 58 85 136 26.3 84.5
BNFN 3606-7.5 36 6 36.75 65 100 161 27.5 95.2
BNFN 3608-7.5 36 8 37.25 70 114 212 48.3 142.1
BNFN 3610-7.5 36 10 37.75 75 120 261 71.1 190.1
BNFN 3616-5 36 16 38 78 123 268 58.3 143.1
BNFN 4005-6 40 5 40.75 67 101 156 23.7 84.7
BNFN 4006-7.5 40 6 41 70 104 162 39.2 132.3
BNFN 4016-5 40 16 42 84 126 280 61.4 158.8
BNFN 4506A-7.5 45 6 46 80 114 161 41.2 150
BNFN 4508-7.5 45 8 46.25 85 127 212 53.1 178.4