Bosch Rexroth IndraDyn MAD100B Rexroth IndraDyn MAD100C, Project Planning Manual, Page: 196 / 276

Coolant connection thread
Motor MAF ...
Connection via ...
Notice
Thread
Quick coupling
[Ø d
i
tube]
100 ... 130 G1/4" 9 mm Select connection
according to type
code
160 ... 225 G1/2" 13 mm
Tab. 8-7: Overview of coolant ports
The connection threads at the motor are covered with factory-provided pro‐
tective plugs. These protective plugs may only be removed immediately be‐
fore screwing in the coolant ducts or the quick coupling to prevent dirt from
entering the cooling system.
The following table gives an overview of the loads allowed for the motor-side
connection threads.
Frame size MAF ... Connection thread Max. allowed screw-
in depth [mm]
max. permissible
tightening range
[Nm]
100 ... 130 G1/4" 14 18 ... 20
160 ... 225 G1/2" 18 27 ... 30
Tab. 8-8: Cooling connection thread, permissible tightening torques and
screw-in depths
The coolant port threads on the motor may
be destroyed by incorrect tightening torques!
NOTICE
The allowed motor connection tightening torque may not be exceeded! If the
tightening torque or screw-in depth is exceeded, the motor may be damaged
irreversibly.
The coolant connections on the motor side are provided for coolant connec‐
tion threads with axial sealing.
Bosch Rexroth recommends using threaded connections which contain an O-
ring for axial sealing of the screw connections.
For example, seals consisting of hemp, teflon tape or cone-shaped screw
connections are not considered to be suitable, since this type of seal may
stress the connection thread at the motor to an unreasonably high extent
and/or damage it permanently.
The machine manufacturer is responsible for ensuring that the
coolant connection is tight and for verifying and accepting the
tightness after the motor has been installed.
Additionally, record regular monitoring of the proper state of the
cooling connection in the maintenance plan of the machine.
Quick coupling It is also possible to use a quick coupling for the coolant port. The quick cou‐
pling features leak protection on either side and can be released even under
full pressure.
If a motor with this type of coolant port is ordered, all quick coupling parts are
included in the motor delivery. Based on the ambient conditions of the motor,
two quick coupling mounting methods are available for selection.
186/265
Connection techniques
MAD / MAF Asynchronous Housing Motors
Bosch Rexroth AG R911295781_Edition 11