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]
50
Lead
Ph [mm]
d1
[mm]
49,1
Preload
Axial play
Nut inertia
Inn [kgmm2]
11 482
Max. nut transmissible torque
[Nm]
803
Max. nut transmissible axial load
[kN]
162
Screw dynamic capacity
Ca [kN]
94,8
Screw static capacity
238,2
Bearing dynamic capacity
156
Bearing static capacity
166
Ø1
70
Ø2
120
Ø3
170
Ø4
210
Ø5
Ø6
110
Ø7
85
L
163,3
L1
20
L2
15,5
L3
25,4
L4
99,8
L5
4,5
L6
23,5
L7
15,7
L8
L9
25
R1
1,6
R2
J1
190
J2
106
Z1xH1
8 x Ø11
Z2xH2
6 x M8
H3
M8 x 1
Note : Nut inertia can be optimised with an aluminium pulley support.