8
Accessories
8.1
Transmission
ATEX motors
Danger of explosion and life or high damage
to property!
WARNING
Gearboxes which are mounted and operated on MSK ATEX motors must cor‐
respond to the demand for Ex-protection according to the 94/9/EG directive.
Please observe the notes within the product documentaions of the used com‐
ponents when projecting and during operation.
Rexroth does not offer or supply ATEX-compliant servo planetary gears for
the attachment to MSK-ATEX motors, either individually or mounted on mo‐
tors.
Various transmission manufacturers have explosion-protected transmissions
in their scope of supply. If necessary, contact the following supplier recom‐
mended by Rexroth, for example:
Neugart GmbH, Keltenstr. 16, 77971 Kippenheim, Germany
Attachment of transmissions on
motors
If transmissions are attached to motors, the thermal coupling of the motors to
the machine or system design changes. Depending on the type of transmis‐
sion, the amount of heat generated at the transmission varies. In any case,
the heat dissipation of the motor via the flange is reduced when the transmis‐
sion is attached. This must be taken into account when planning the system.
In order not to thermally overload motors when using transmissions, it is nec‐
essary to reduce the specified performance data.
S1(60K) motor Continuous operating characteristic curves S1 motor
S1(60K) gear Continuous operating characteristic curves S1 motor with
transmission attachment
Fig. 8-1:
S1 characteristic curve transmission
The torques specified in the motor characteristics must be re‐
duced by approx. 20-30% when attaching transmissions.
Observe all other notes and requirements in the documentation for the trans‐
missions used.
DOK-MOTOR*-MSK*EXGIIK3-PR09-EN-P
Bosch Rexroth AG
107/175
Synchronous Servomotors MSK For Potentially Explosive Areas
Accessories
