Bosch REXROTH A4 Series, Instruction Manual, Page: 53 / 104

Installation 53/104
RE 92076-01-B/10.2017, A4... with HS5E pilot control valve/Series 3x, Bosch Rexroth AG
The following tightening torques apply:
• Fittings:
Observe the manufacturer's specifications regarding the tightening torques of the
used fittings.
• Female threads in the axial piston unit:
The maximum permissible tightening torques
M
G max
are maximum values of the
female threads and must not be exceeded. For values, see Table 14.
• 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 14.
• Mounting bolts:
For mounting bolts with metric ISO thread according to DIN 13 or thread according
to ASME B1.1, we recommend checking the tightening torque in individual cases in
accordance with VDI 2230.
Table 14: Tightening torques for female threads and threaded plugs
Ports
Maximum permissible
tightening torque of the
female threads
M
G max
Required tightening torque
of the 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 5/16-24 UNF-2B 10 Nm 7 Nm 1/8 in
3/8-24 UNF-2B 20 Nm 10 Nm 5/32 in
7/16-20 UNF-2B 40 Nm 18 Nm 3/16 in
9/16-18 UNF-2B 80 Nm 35 Nm 1/4 in
3/4-16 UNF-2B 160 Nm 70 Nm 5/16 in
7/8-14 UNF-2B 240 Nm 110 Nm 3/8 in
1 1/16-12 UN-2B 360 Nm 170 Nm 9/16 in
1 5/16-12 UN-2B 540 Nm 270 Nm 5/8 in
1 5/8-12 UN-2B 960 Nm 320 Nm 3/4 in
1 7/8-12 UN-2B 1200 Nm 390 Nm 3/4 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