Bosch MSK030B-0900-NN, Project Planning Manual

Page: 251 / 282

12.3 Mechanical attachment
12.3.1 Flange attachment
The screw connection must be adapted to the installation situation (screw
length, strength class, screw-in depth, material, ...) The dimensioning of the
screw connection is the responsibility of the customer.
Rexroth recommends the following screws and washers for attaching the mo‐
tors to the machine in a professional and safe manner.
Fixing screws MSK motors
Boring
⌀ [mm]
Screw 8.8
DIN EN ISO 4762
DIN EN ISO 4014
Tightening torque
M
A
[Nm] at μ
K
= 0.12
Washer
DIN EN ISO 28738
4.5 M4 × 20 3 -
6.6 M6 × 20 10.1 -
9 M8 × 20 24.6 yes
11 M10 × 30 48 yes
14 M12 × 40 84 yes
18 M16 × 35 206 yes
Tab. 12-1: Mounting screws tightening torque
The bolted connections for flange mounting must be able to ab‐
sorb both the weight force of the motor and the forces occurring
during operation.
If screws and washers that deviate from this recommendation are
used, the strength class of the screws and the hardness class of
the washers must be equivalent in order to transmit the required
tightening torques.
MSK motors are manufactured ex works for flange mounting (B05). Details
on the mounting holes are contained in the respective dimension sheet.
12.3.2 Foot attachment
The foot attachment only is available for MSK133.
The screw connection must be adapted to the installation situation (screw
length, strength class, screw-in depth, material, ...) The dimensioning of the
screw connection is the responsibility of the customer.
Mounting screws MSK133 foot attachment
Motor
Boring
⌀ [mm]
Screw Washer
MSK133-...-NPNN 12 M10 Yes
Tab. 12-2: Mounting screws tightening torque
Foot mounting Before attaching the MSK133 by means of foot mounting, observe the speci‐
fied distance from the center of the motor shaft to the lower edge of the foot
in the respective motor dimension sheet. Compare this dimension with the
connection dimension on the machine side.
DOK-MOTOR*-MSK********-PR12-EN-P Bosch Rexroth AG 249/279
Synchronous Servomotors MSK
Installation