Configuring The Hydraulics; Cylinder Selection - Siemens SINAMICS S120 System Manual

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
Designation
Piston diameter
Rod diameter, standard
Rod diameter, optional
Stroke length
The stroke is identical to the working stroke of the drive except that it includes a few
additional safety reserves.
Hydraulic Drive
System Manual, 04/2015, 6SL3097-4BA00-0BP1
Typical cylinder data
25 32
12 14
18 22
3.3 Configuring the hydraulics
Diameter
40 50 63
18 22 28
28 36 45
Configuration
80 100 125
36 45 56
56 70 90
37