The nut rotates inside bearings and moves along the fixed long lead screw shaft. The drive motor moves with the nut, so inertia and critical speed problems associated with a long rotating shaft, are minimised.
Nominal screw diameter
d0 [mm]
40
Lead
Ph [mm]
20
d1
[mm]
37,7
Preload
Axial play
Nut inertia
Inn [kgmm2]
3 095
Max. nut transmissible torque
[Nm]
240
Max. nut transmissible axial load
[kN]
116
Screw dynamic capacity
Ca [kN]
54,7
Screw static capacity
176,7
Bearing dynamic capacity
93,6
Bearing static capacity
91,5
Ø1
58
Ø2
93
Ø3
125
Ø4
159
Ø5
Ø6
80
Ø7
63
L
136,4
L1
L2
9,3
L3
22,5
L4
85
L5
4,7
L6
17,4
L7
15
L8
L9
R1
0,8
R2
J1
142
J2
75
Z1xH1
8 x Ø9
Z2xH2
6 x M6
H3
M8 x 1
Note : Nut inertia can be optimised with an aluminium pulley support.