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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
circuitxnumber of thread
BASIC RATE LOAD(kgf)
BALLNUT DIMENSION
Nut Model No.
O.D.
Length
Flange
Assembly
Hole
Oil Hole
STIFFNESS
O.D.
Lead
Dynamic
(1×106 REV.)
Ca
Static
Co
D
L
A
T
W
H
X
Q
kgf/μm
15
10
3.175
2.8x2
1000
2570
34
44
57
10
45
40
5.5
M6x1P
26
FSKW1510-5.6P
16
16
3.175
1.8x1
330
640
32
38
53
10
42
38
4.5
M6x1P
9
FSKW1610-1.8P
20
20
3.175
1.8x2
780
2280
39
52
62
10
50
46
5.5
M6x1P
21
FSKW2020-3.6P
25
25
3.969
1.8x2
1230
3570
47
62
74
12
60
56
6.6
M6x1P
27
FSKW2525-3.6P
1.8x4
2230
7140
52
FSKW2525-7.2P
32
32
4.762
1.8x2
1760
5500
58
78
92
15
74
68
9
M6x1P
33
FSKW3232-3.6P
1.8x4
3200
11000
65
FSKW3232-7.2P
40
40
6.350
1.8x2
2870
9170
73
95
114
17
93
84
11
M6x1P
42
FSKW4040-3.6P
1.8x4
5220
18340
81
FSKW4040-7.2P
