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Pressure and flow control system SYDFE1 series 2X, 3X
| Mounting
Bosch Rexroth AG, Edition 10.2021, RE 30011-B
The pressure port of the SYDFE1 control system of size 71 is provided with threads
for two standard flange connection patterns:
SAE 1“ (dot-dashed line) for pressures above 250 bar and
SAE 1 ¼“ (dotted line) for pressures up to 250 bar.
Because standard flanges according to SAE 1 ¼’’ are permitted up to 250 bar only,
the porting pattern to SAE 1” must be used in the case of operating pressures
higher than 250 bar.
Fig. 21: Flange pattern
To connect the SYDFE1 control system to the hydraulic system:
1.
Remove the plug screws from the ports that are to be connected according to
the hydraulic circuit diagram.
2.
Use only clean hydraulic lines.
3.
Connect the lines according to the hydraulic circuit diagram.
Either pipes or hoses must be connected to all ports according to the
installation drawing and machine or system circuit diagram or the ports have to
be plugged using suitable plug screws.
The installation drawing contains the dimensions of all connections and ports
on the SYDFE1 control system. Also observe the instructions provided by the
manufacturers of the other hydraulic components when selecting the required
tools.
4.
Make sure
– that the cap nuts are correctly tightened on the fittings and flanges (observe
tightening torques!). Mark all checked fittings using e.g. a permanent marker,
– that the pipes and hose lines and every combination of connecting pieces,
couplings or connecting points with hoses or pipes have been inspected by a
technically qualified person for their safe working condition.
The tightening torques for the SYDFE1 control system are listed in the following
table:
• Threaded hole in the axial piston unit:
The maximum permissible tightening torques M
Gmax
are the maximum values of
the threaded holes and must not be exceeded.
• Fittings:
Observe the manufacturer’s instructions regarding tightening torques for the
fittings used.
• Mounting screws:
For mounting screws according to DIN 13/ISO 68, we recommend checking the
tightening torque in each individual case as per VDI 2230.
Procedure
Tightening torques
