5
Technical data
5.1
Description of the specified parameters
General information
The torque-speed characteristics and technical data are given for
●
60K temperature increase on the housing
.
60K data
The 60K data are given for MSK motors under the following conditions:
●
Ambient temperature 40 °C
●
Insulated construction
●
Maximum temperature increase on housing ΔT = 60K
●
For motors with optional holding brake, data are always given for motors
with holding brake.
●
Motors with radial shaft sealing ring
Parameters in the data sheet
Designation
Symbol
Unit
Description
Continuous torque at standstill
60K
M
0_60
Nm
Continuous torque that can be applied to the motor output shaft at a speed of
(f
el
≥ 0.4 Hz). At n = 0: M
0
= 0.95 · M
0_60
Continuous current at standstill
60K
I
0_60
A
Phase current (crest value) of the motor M
0_60
required for the continuous torque
at standstill.
Maximum torque
M
max
M
max
For maximum current I
max
, for approx. 400 ms exchangeable maximum torque.
The maximum torque depends on the drive control unit. The only binding maxi‐
mum torque is that specified in the selection lists.
Maximum current
I
max(eff)
A
Maximum, temporarily permissible phase current of the motor winding without ad‐
verse effect on the permanent magnet circuit of the motor.
Torque constant at 20 °C
K
M_N
Nm/A
Ratio of generated torque to motor phase current at motor temperature 20 °C. Val‐
id up to approx. i = 2x I
0_60
.
Voltage constant at 20 °C
K
EMK_1000
V/min
-1
Root-mean-square value of the induced motor voltage at a motor temperature of
20 °C and 1,000 revolutions per minute.
Winding resistance at 20 °C
R
12
Ohm
Measured winding resistance among two strands.
Winding inductivity
L
12
mH
Measured inductivity between two strands.
Leakage capacitance
C
dis
nF
Capacity of short-circuited power connections U, V, W against the motor housing.
Number of pole pairs
p
-
Quantity of pole pairs of the motor.
Moment of inertia of the rotor
J
red
kgm
2
Moment of inertia of the rotor without optional holding brake. Moment of inertia of
the holding brake must be added as well.
DOK-MOTOR*-MSK*EXGIIK3-PR09-EN-P
Bosch Rexroth AG
31/175
Synchronous Servomotors MSK For Potentially Explosive Areas
Technical data
