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Installation 45/68
RE 93100-01-B/2019-09-10, A20V(L)O Series 1,
Bosch Rexroth AG
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 max. permissible tightening torques
M
G max
are the maximum values for
the female threads and should not be exceeded. For values, see Table 19.
• Threaded plugs:
For the metallic threaded plugs supplied with the axial piston unit, the required
tightening torques of threaded plugs
M
V
apply. For values, see Table 19.
• 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.
In addition to the ports specified in Table 16, Table 17 and Table 18 on
page 44, axial piston units may have openings that are also closed with
a threaded plug. These plugs must not be opened on the customer side! If you
have opened the threaded plug accidentally, please contact your local contact
person to ensure safe re-closing of the plug. You can find the address at
www.boschrexroth.com/addresses
Table 19: Tightening torques for female threads and threaded plugs
Ports
Maximum permissible
tightening torque of female
threads
M
G max
Required tightening torque
of threaded plugs
M
V
WAF hexagon socket
of the threaded plug
Standard
Thread size
DIN 3852
M8 × 1
10 Nm
7 Nm
1)
3 mm
M10 × 1
30 Nm
15 Nm
2)
5 mm
M12 × 1.5
50 Nm
25 Nm
2)
6 mm
M14 × 1.5
80 Nm
35 Nm
1)
6 mm
M16 × 1.5
100 Nm
50 Nm
1)
8 mm
M18 × 1.5
140 Nm
60 Nm
1)
8 mm
M22 × 1.5
210 Nm
80 Nm
1)
10 mm
M26 × 1.5
230 Nm
120 Nm
1)
12 mm
M27 × 2
330 Nm
135 Nm
1)
12 mm
M33 × 2
540 Nm
225 Nm
1)
17 mm
M42 × 2
720 Nm
360 Nm
1)
22 mm
M48 × 2
900 Nm
400 Nm
1)
24 mm
ISO 11926
7/16-20 UNF-2B
40 Nm
18 Nm
3/16 in
7/8-14 UNF-2B
240 Nm
110 Nm
3/8 in
1)
The tightening torques for the threaded plugs are valid for the condition "dry" and "lightly oiled".
2)
The tightening torques for the threaded plugs are valid for the condition "dry" – in the condition "lightly oiled", the tightening torques
for M10 × 1 are reduced to 10 Nm and for M12 × 1.5 to 17 Nm.
Tightening torques