Bosch rexroth MS2N03-A Operating Manual page 24

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Features and functions
Balancing
MS2N motors with keyway are balanced
with "half key" (half key balancing acc. to
DIN ISO 21940-32).
The type of balancing is specified at the shaft
front end or the base of the recess with " H " for
half key balancing.
2
1
H
Fig. 5: Identification balancing
1 Identification of balancing at the end face of
the shaft
2 Identification of balancing in the base of the
recess
Attachment of drive elements
The mode of balancing of drive elements must be
adjusted to the motor. Observe the notes about
mounting drive elements.
CAUTION
Ingressing fluid may damage the motor!
Fluids (e.g., cooling lubricants, gear oil, etc.)
may not be present at the output shaft.
When attaching gearboxes, only use gearboxes
with a closed (oil-tight) lubrication system.
Gearbox oil should not be in permanent contact
with the shaft sealing ring of the motors.
Bosch Rexroth AG
Gearbox mounting on motors
The Rexroth gearbox series GTE and GTM are
intended for installation at MS2N motors. Refer
to the notes regarding the motor and gearbox
configuration in .
Observe the instructions in the corresponding
manufacturer´s documentation.
Overdetermined bearing
When installing drive elements, avoid overdeter-
mined bearing, as impermissibly high bearing
reactions can be generated due to unfavorable
bearing ratios.
Remark: If an overdetermined arrangement
of bearings cannot be avoided, please contact
Bosch Rexroth.
Couplings
The machine construction and the drive elements
used must be carefully adapted to the motor type
so as to make sure that the load limits of the shaft
and the bearing are not exceeded.
Remark: When extremely stiff couplings are
attached, the revolving radial force may cause an
impermissibly high load on the shaft and bearing.
Bevel gear pinion or helical drive pinion
Due to thermal expansion, the DE side of the
drive shaft can be displaced by up to 0.6 mm
in relation to the motor housing. If helical drive
pinions or bevel gear pinions directly attached
to the output shaft are used, this change in the
lengths will lead to
•
a shift in the position of the axis, if the driving
pinions are not axially fixed on the machine
side.
•
a thermally dependent component of the
axial force, if the driving pinions are axially
fixed on the machine side. This causes the
MS2N
R911347581, Edition 05