Bosch rexroth A4VSO 10 Series Instruction Manual page 48

44/72 Installation
tightening torques
table 16: tightening torques for female threads and threaded plugs
ports
Standard thread size
DIN 3852 1) M8 x 1
M10 x 1
M12 x 1.5
M14 x 1.5
M16 x 1.5
M18 x 1.5
M22 x 1.5
M26 x 1.5
M27 x 2
M33 x 2
M42 x 2
M48 x 2
1) The tightening torques of the threaded plugs M
2) When "lightly oiled", M is reduced to 10 Nm for M10 x 1 and 17 Nm for M12 x 1.5. When the unit is "dry" and M
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M10 x 1 and 17 Nm for M12 x 1.5, the maximum permissible pressure is 420 bar.
procedure
Bosch Rexroth AG, axial piston variable pump A4VSO, RE 92050-01-X-B1/2019.08.23
The following tightening torques apply:
• Fittings:
Observe the manufacturer's specifications regarding the tightening torques
of the fittings used.
• Female threads in the axial piston unit:
The maximum permissible tightening torques M
female threads and should not be exceeded. For values, see Table 16.
• Threaded plugs:
For the metal threaded plugs that come with the axial piston unit, the required
tightening torques for the threaded plugs M
• Mounting bolts:
For mounting bolts with metric ISO threads according to DIN 13 and/or ASME
B1.1 threads, we recommend checking the tightening torque in individual cases
in accordance with VDI 2230.
Maximum permissible
tightening torque of female
threads M
G max
10 Nm
30 Nm
50 Nm
80 Nm
100 Nm
140 Nm
210 Nm
230 Nm
330 Nm
540 Nm
720 Nm
900 Nm
apply to the unit when "dry" and to the plugs when "lightly oiled" for installation.
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To connect the axial piston unit to the hydraulic system:
1. Remove the protective plugs and/or threaded plugs from the ports where
the connections should be made according to the hydraulic circuit diagram.
2. Make sure the sealing surfaces of the hydraulic ports and functional surfaces are
not damaged.
3. Use only clean hydraulic lines or flush them before installation.
(Observe chapter 8.1.6 "Performing flushing cycle" on page 51 when you flush
out the entire system.)
4. If using an external bearing flushing, screw the throttle screw in port "U" in to
the stop.
5. Connect the lines in accordance with the installation drawing and the machine
or system circuit diagram. Check that all ports are connected or plugged with
threaded plugs.
G max
apply. For values, see Table 16.
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required tightening torque
of threaded plugs M
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7 Nm
15 Nm 2)
25 Nm 2)
35 Nm
50 Nm
60 Nm
80 Nm
120 Nm
135 Nm
225 Nm
360 Nm
400 Nm
are the maximum values for the
WAF hexagon socket
of the threaded plug
3 mm
5 mm
6 mm
6 mm
8 mm
8 mm
10 mm
12 mm
12 mm
17 mm
22 mm
24 mm
reduced, 10 Nm for
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