Siemens SINAMICS S120 - Configuring the Hydraulics; Cylinder Selection

Configuration
3.3 Configuring the hydraulics
Hydraulic Drive
System Manual, 04/2015, 6SL3097-4BA00-0BP1
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3.3
Configuring the hydraulics
3.3.1
Cylinder selection
Piston and rod diameters
The piston and rod diameters are calculated according to Pascal's theorem on the basis of
the necessary compressive and tensile forces F and a standard pressure value of
p = 40 bis 100 bar for machine tools (a maximum pressure of 350 bar is permitted).
The force value calculation must include friction and acceleration forces as well as the actual
feed force. Pistons and rods with the following standard diameter dimensions are available:
Table 3- 1 Typical cylinder data
Designation
Diameter
Piston diameter
25
32
40
50
63
80
100
125
Rod diameter, standard
12
14
18
22
28
36
45
56
Rod diameter, optional
18
22
28
36
45
56
70
90
Stroke length
The stroke is identical to the working stroke of the drive except that it includes a few
additional safety reserves.