12.3
Mechanical Mounting – Motor Assembly
12.3.1
Flange Assembly
To attach the motors properly and safely to the machine, Rexroth recom‐
mends the following screws and washers for attachment.
The screwed connections must be able to take up both the force
due to the weight of the motor and the forces acting during opera‐
tion.
In the standard case, use cylinder screws DIN 912 - M... x ... - 8.8 and corre‐
sponding shimmings according to DIN EN 28738. Some motors do not need
any shimmings. See table.
If the screws and washers used do not comply with this recomm‐
dation, the stability class of the screws and the hardness class
must be equivalent in order to transmit the required tightening tor‐
MKE motors are designed for flange assembly (B05). Details on the mounting
holes are given in the corresponding dimension sheet. In general, the follow‐
ing assignment is applicable for attaching the motors:
Motor
B05 (flange assembly)
Hole
Screw (8.8)
Wash‐
er DIN EN 287
38
Ø [mm]
Type
1)
M
GA
[Nm]
Ø [mm]
MKE037
4.5
M4×20
3.1
not necessary
MKE047
6.6
M6×20
10.4
not necessary
MKE098
11.0
M10×30
51
12
MKE118
14.0
M12×40
87
14
M
GA
Tightening torque in Newton meters
1)
The indicated screw lengths apply for screwing into steel.
Fig.12-1:
Fastening accessory for flange mounting
12.3.2
Preparation
Prepare the motor assembly as follows:
1. Procure tools, supplies, measuring and test equipment.
2. Check all components for visible damage. Damaged components may
not be mounted.
3. Ensure that dimensions and tolerances on the system side are suitable
for motor attachment (for details, see the dimension sheet).
4. Inspect all components, mounting surfaces and threads to ensure they
are clean.
5. Make sure that the assembly can be carried out in a dry and dust-free
environment.
6. Make sure that the holder for the motor flange is deburred.
DOK-MOTOR*-MKE*GEN2***-PR06-EN-P
Rexroth MKE Synchronous Motors for Potentially Explosive Areas acc. to ATEX and UL/CSA
Bosch Rexroth AG
107/135
Installation
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