Bosch rexroth SYDFED 2X Series Manual page 50

50/96 SYDFED-2X, SYDFED-3X, SYHDFED-1X | Installation
Procedure
Tightening torques
Risk of mixing up
threaded connections
Bosch Rexroth AG, Edition 11.2021, RE 30017-B
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 SY(H)DFED 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 SY(H)DFED 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 SY(H)DFED control system are listed in the following
table:
• Threaded hole in the axial piston unit:
The maximum permissible tightening torques M
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.
• Plug screws:
For the metal plug screws that come with the SY(H)DFED control system, the
required tightening torques of plug screws M
SY(H)DFED control systems are used in applications with metric as well as with
imperial systems of units.
are the maximum values of
Gmax
apply.
V