![](https://www.globalindustrialsupplies.eu/wp-content/uploads/2016/08/15072917062_s080pam112_cam1-353x200.jpg)
16
6
.1
THERMAL POWER
Intermittent duty [%]
(1)
T_amb
100%
80%
60%
40%
20%
10°C
1,15
1,25
1,35
1,5
2
20°C
1
1,05
1,15
1,35
1,75
30°C
0,9
1,00
1,05
1,25
1,50
40°C
0,75
0,8
0,9
1
1,35
50°C
0,6
0,63
0,7
0,8
1
All sizes - Parallel helical
Train of gears
Input speed [rpm]
tb
P1H
P2H
P3H
n
1
= 1500
1,5
n
1
= 1000
1,12
All sizes - Bevel helical
Train of gears
Input speed [rpm]
tb
B2H
B3H
n
1
= 1500
1,75
n
1
= 1000
1,35
TABLE N. 6
THERMAL FACTOR ta, ACCORDING
TO AMBIENT TEMPERATURE AND INTERMITTENT DUTY
TABLE N. 7 THERMAL FACTOR tb, DEPENDING ON COOLING FAN
(1)
Calculated for 60 minutes of running