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Mechanical properties of the motors
3.1 Cooling
Notes on oil cooling
The following minimum requirements must be met:
Density:
Specific thermal capacitance: c
Kinematic viscosity:
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.
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
Fan mounting
Air flow direction
Air discharge
Air flow [l/s]
40
CAUTION
Technical data for forced ventilation
ρ
≥ 780 kg/m
3
≥ 1870 J/(kgK)
p
ν
≤ 10
m
/s
–5
2
Shaft height 100
Non-drive end (rear of motor)
Axial, fan can be rotated through 4x90 degrees
40
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0
Shaft height 132
From DE to NDE
105
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