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Note:
Stiff ness of nut:
Stiff ness values listed above are derived from theoretical formula to the elastic deformation between thread grooves and balls while axial load is 30% dynamic load rating.
 
Screw size Ball DIA.

Effeftive turns
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 BASIC RATE LOAD(kgf) BALLNUT DIMENSION Nut Model No.
O.D. Length Flange Return tube Assembly
Hole		 Oil Hole STIFFNESS
O.D. Lead Dynamic
(1×106 REV.)
Ca

Static

Co

 D

L

 A T W G U V X Q kgf/μm
14 4 2.381 3.5x1 500 1100 25 42 55 10 40 19 19 21 4.5 M6x1P 15 FSVW1404-3.5P
5 3.175 2.5x1 515 990 30 43 50 10 40 22 22 21 4.5 M6x1P 11 FSVW1405-2.5P
16 5 3.175 2.5x1 550 1140 34 43 54 10 44 24 20 22 4.5 M6x1P 13 FSVW1605-2.5P
20 5 3.175 2.5x1 625 1450 40 43 60 12 50 28 28 27 4.5 M6x1P 15 FSVW2005-2.5P
10 4.762 2.5x1 1100 2200 40 60 67 12 53 30 30 30 6.6 M6x1P 16 FSVW2010-2.5P
25 5 3.175 2.5x1 720 1830 42 45 71 12 57 28 32 32 6.6 M6x1P 18 FSVW2505-2.5P
2.5x2 1120 3710 60 37 FSVW2505-5.0P
10 6.350 2.5x1 1720 3590 44 68 79 15 62 34 37 37 9.0 M6x1P 21 FSVW2510-2.5P
2.5x2 3200 7170 98 40 FSVW2510-5.0P
32 10 6.350 2.5x1 1930 4680 55 72 97 18 75 39 44 44 11 M6x1P 25 FSVW3210-2.5P
2.5x2 3130 9410 101 49 FSVW3210-5.0P
40 10 6.350 3.5x2 4450 16800 65 123 114 20 90 44 52 52 14 M6x1P 81 FSVW4010-7.0P
50 10 6.350 3.5x2 4940 21000 80 125 138 22 110 52 62 62 18 M6x1P 98 FSVW5010-7.0P