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Features and functions
Table 6: Tightening torque of mounting screws
Screw
1)
Mounting holes ⌀ [mm]
Tightening torque M
[Nm] at μ
A
= 0.12
K
Washer
Screws according toEN ISO 4762:2004 or EN ISO 4014:2011. Fastening class 8.8. The screw lengths
1)
depends on material and installation situation. The specified tightening torque must be ensured.
Dimensions KLE connection thread
B
Type
MKE037
MKE047
MKE098
MKE118
6.2.3
Thermal motor protection
The motor temperature is monitored by two sys-
tems that are operated independently of each
other. The mounted temperature sensor and the
drive-internal temperature model ensure the best
protection of motors against thermal overload.
MKE motors are protected against impermissible
heating by a PTC drilling integrated in the motor
winding.
A series circuit of three PTC thermistors (one
PTC resistor per string) is installed in each motor.
Triggering devices or control devices monitor the
resistance to a maximum value. Voltage discon-
Bosch Rexroth AG
M4
M6
4.5
6.6
3.0
10.1
-
-
B
A [mm]
—
—
—
41
MKE Synchronous Servomotors
M8
M10
9
11 ... 12
24.6
48
yes
yes
B
B
NPT 3/4´´
NPT 3/4´´
NPT 3/4´´
NPT 3/4´´
nection occurs when only one PTC is heated up to
nominal tripping temperature (130 °C±5 °C) by
the winding.
M12
M16
14
18
84
206
yes
yes
B
C
A
C
—
—
—
NPT 3/4´´
R911414374, Edition 01
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