User's Manual

30 kW S-BAND/U ANTENNA GROUP
CORRECTIVE MAINTENANCE
6.11 Rev. C
6 .2 .3 Belt inst alla t ion t ension
The required level of pre-tension will lie between the maximum and minimum
values calculated from the formulae below.
As a general guide the lower level will be applicable to lightly loaded, smooth
running drives, whereas drives subjected to high shock loads or frequent starts
will be tensioned at the higher level.
Deflecting Force (F)
1 Maximum pre-tension
P x 50
F = -------- = 36.2 Kg
V
2 Minimum pre-tension
P x 25
F = --------- = 18.1 Kg
V
Belt deflection
S
d = ------- = 6.3mm
50
Where
S = Belt span (mm)
P = Transmitted power (KW)
V = Belt speed m/s
Note
Pitch x N x rpm
V = --------------------------- (m/s)
60000
N = Grooves on driver
Rpm = rpm of driver