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MKE Synchronous Servomotors
Features and functions
Bosch Rexroth AG
R911414374, Edition 01
The standard design for a non-positive shaft-hub
connection without play and excellent smooth
running. Use clamping sets, pressure sleeves or
clamping elements for coupling the machine ele-
ments to be driven.
Shaft with keyway
Cylindrical shaft end according to DIN 748-3 with
frontal centering hole with "DS" thread according
to DIN 332-2:1983-05 and keyway.
The keyway design allows form-locking transmis-
sion of torques with constant direction and low
requirements on the shaft-hub connection.
The machine elements to be driven have to be
secured in axial direction via the centering hole.
Table 9: Keys and centering hole for MKE motors
Type
KeyDIN
6885-1:2021-
11
Centering
holeDIN
332-2:1983-0
5
MKE037
3×3×16
DS M3
MKE047
5×5×20
DS M5
MKE098
8×8×40
DS M8
MKE118
10×8×45
DS M10
Remark:
Keys are not included in the scope of
delivery.
We recommend regular visual inspections on
shaft sealing rings. Depending on operating con-
ditions, signs of wear may appear after 5,000
operating hours. If necessary, replace the shaft
sealing rings. Repairs must be carried out by
Rexroth Service.
Balancing
MKE motors are balanced with the “complete
key”.
Attachment of drive elements
Observe the notes about mounting drive ele-
ments.
Explosion protection
When mounting drive elements, check their suit-
ability and keep the explosion protection direc-
tives during operation. Selecting of all mounting
components underlies the sole responsibility of
the plant manufacturer or operator.
WARNING
Explosion hazard and danger to life, or substan-
tial property damage!
The totality of a motor-machine combination
must comply with the specifications for explo-
sion protection.
Please observe the notes within the product doc-
umentation of the used components when pro-
jecting and during operation.
Gearboxes with approvals for use in hazardous
areas for the attachment to MKE motors are deliv-
ered by Rexroth neither separately nor mounted
on motors.
The mounting of gearbox on MKE motors,
including selection and certification underlies the
sole responsibility of the plant manufacturer or
operator.
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.
Overdetermined bearing
When installing drive elements, avoid overdeter-
mined bearing as impermissibly high bearing
reactions can be generated due to unfavorable
tolerance ratios.
Remark:
If overdetermined arrangement of
bearings cannot be avoided, please contact
Bosch Rexroth.
About this pr
oduct