LENZE
Drive dimensioning
Dimensioning
2-3
2
G-motion atex en 06/2011
Thermal power limit
The permissible gearbox continous power is restricted by:
˘
The mechanical power, defined by the material strength
of the individual components or
˘
The thermal power limit, defined by the heat balance
The thermal power limit may be lower than the mechanical
power rating indicated in the selection tables.
The thermal power limit is affected by:
˘
The churning losses associated with the lubricant.
These are determined by the mounting position and
circumferential speed of the gears.
˘
The load and the speed
˘
The ambient conditions: temperature, air circulation, heat
input or dissipation via shafts and the foundation
Please consult the Lenze sales office
˘
if you are using the following gearbox type, size and
ratio combinations at input speed n
1
> 1500 rpm:
Gearbox type
Gearbox size
Ratios
i <
GST
07, 09, 11, 14
10
GFL
07, 09, 11, 14
16
GKS
07, 09, 11, 14
25
...or if the input speeds n
1
listed are exceeded:
Mounting position
Motor frame size
063...100
112...132
Drive size
1A...
ò
E
ò
F...
ò
G
A, B, E, F
3000 rpm
3000 rpm
C, D
3000 rpm
1500 rpm