Mechanical properties of the motors
3.1 Cooling
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
40
Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0
Notes on oil cooling
The following minimum requirements must be met:
Density:
ρ
≥ 780 kg/m
3
Specific thermal capacitance: c
p
≥ 1870 J/(kgK)
Kinematic viscosity:
ν
≤ 10
–5
m
2
/s
NOTICE
If the minimum requirements cannot be met, power derating may be necessary to ensure
that the motor is not operated beyond its thermal limit. Please contact the manufacturing
plant for further information (see chapter "Preface", Technical Support).
3.1.3
Forced ventilation
The 1PM6 hollow-shaft motors are forced ventilated.
CAUTION
Temperatures of over 100°C can occur at the surface of the motors.
Note
For air-cooled motors, the cooling ducts, through which the ambient air flows, must be
regularly cleaned depending on the degree of pollution at the installation location. These air
ducts can be cleaned, e.g. using dry, oil-free compressed air.
For further information about ambient conditions, please refer to chapter "Application of
motors".
Technical data for forced ventilation
Table 3-6
Technical data for forced ventilation
Shaft height 100
Shaft height 132
Fan mounting
Non-drive end (rear of motor)
Air flow direction
From DE to NDE
Air discharge
Axial, fan can be rotated through 4x90 degrees
Air flow [l/s]
40
105
