Siemens SINAMICS S120 1PM6 Configuration Manual page 36

Mechanical properties of the motors
3.1 Cooling
Table 3-2
Maximum static coolant pressure: 0.6 MPa (6.0 bar)
Pressure drop (this occurs naturally): approx 0.1 MPa (1.0 bar)
Materials used in the cooling circuit
Bearing shield:
Housing:
Sealing agent:
Heat-exchanger unit
A cooling unit (i.e. heat exchanger) must be used in order to guarantee a coolant intake
temperature of 30 °C. More than one motor can be operated on a single heat-exchanger
unit. The heat exchangers are not part of the motor scope of supply.
Figure 3-1
36
Flow rate, cooling power, connection and coolant pressure
Motor type Flow rate
[l/min]
1PM4101 6
1PM4105 6
1PM4133 8
1PM4137 8
Cast iron
Aluminum profile DIN EN 12020
Terostat
Example of a cooling circuit
Cooling power Cooling power with
with
water [W]
1400
2600
2750
3300
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0
Connection
oil [W]
900 G 1/4"
1500 G 1/4"
1750 G 3/8"
2100 G 3/8"