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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
circuitxrow
BASIC RATE LOAD(kgf)
BALLNUT DIMENSION
Nut Model No.
O.D.
Length
Flange
Fit
Assembly
Hole
Oil Hole
STIFFNESS
O.D.
Lead
Dynamic
(1×106 REV.)
Ca
Static
Co
D
L
A
T
W
G
H
S
X
Y
Z
Q
kgf/μm
14
4
2.381
4
400
890
26
47
46
10
36
-
-
10
4.5
8
4.5
M6x1P
18
FSIW1404-4.0P
16
5
3.175
3
570
1030
30
42
49
20
39
20
40
10
4.5
-
-
M6x1P
17
FSIW1605-3.0P
20
5
3.175
4
830
1890
34
53
57
12
45
20
40
12
5.5
9.5
5.5
M6x1P
21
FSIW2005-4.0P
25
5
3.175
4
940
2420
40
53
63.5
12
51
22
44
15
5.5
9.5
5.5
M8x1P
26
FSIW2505-4.0P
32
5
3.175
4
1050
3390
48
53
73.5
12
60
30
60
15
6.6
11
6.5
M8x1P
32
FSIW3205-4.0P
10
6.350
4
2510
5880
54
90
88
16
70
34
68
15
9
14
8.5
M8x1P
34
FSIW3210-4.0P
40
5
3.175
4
1180
4390
55
56
88.5
16
72
29
58
15
9
14
8.5
M8x1P
38
FSIW4005-4.0P
10
6.350
4
2630
7860
64
93
106
18
84
43
86
20
11
17.5
11
M8x1P
41
FSIW4010-4.0P
50
10
6.350
4
2770
10290
74
93
116
18
94
42
84
20
11
17.5
11
M8x1P
50
FSIW5010-4.0P
