Bosch Rexroth 3 Series - Page 41

Installation 41/68
RE 92105-01-B/06.2017, A4CSG, Series 3x, Bosch Rexroth AG
Table 11: 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
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 of the threaded plugs M
V
are valid for the delivery condition “dry” and for installation related screw condition
“lightly oiled”.
2)
In the “lightly oiled” state, M
V
is reduced to 10 Nm for M10 x 1 and 17 Nm for M12 x 1.5. For the delivery condition “dry” and for
reduced M
V
, 10 Nm for M10x1 and 17 Nm for M12x1.5, the maximum permissible pressure is 420bar.
To connect the axial piston unit to the hydraulic system:
1. Remove the protective plugs or threaded plugs at the ports at which the
connections are to be made according to the hydraulic circuit diagram.
2. Make sure that 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7.5 “Performing flushing cycle” on page 43 when you flush out the
entire system.)
4. Connect the lines in accordance with the installation drawing and the machine or
system circuit diagram. Check whether all ports are connected or plugged with
threaded plugs.
5. Tighten the fittings correctly (note tightening torques!). Mark all correctly
tightened fittings, for example, with a permanent marker.
6. Check all pipes and hose lines and every combination of connecting pieces,
couplings or connecting points with hoses or pipes to ensure they are in
condition for safe working.
For relationship between direction of rotation and flow direction, please refer to
data sheet 92105.
Procedure