![](https://www.globalindustrialsupplies.eu/wp-content/uploads/2016/08/15072917062_s080pam112_cam1-353x200.jpg)
The service factor (f.s.) depends on the operating conditions the gear reducer is subjected to.
The parameters that need to be taken into consideration to select the most adequate service factor correctly
comprise:
type of load of the operated machine : A - B - C
length of daily operating time: hours/day (
∆
)
start-up frequency: starts/hour (*)
LOAD
:
A
- uniform = fa
≤
0,3
B
- moderate shocks = fa
≤
3
C
- heavy shocks = fa
≤
10
fa = Je/Jm
Je (kgm
2
) moment of reduced external inertia at the drive-shaft
Jm (kgm
2
) moment of inertia of motor
If fa > 10 call our Technical Service.
A. Screw feeders for light materials, fans, assembly lines, conveyor belts for light materials, small mixers, lifts,
cleaning machines, fillers, control machines.
B. Winding devices, woodworking machine feeders, goods lifts, balancers, threading machines, medium
mixers, conveyor belts for heavy materials, winches, sliding doors, fertilizer scrapers, packing machines,
concrete mixers, crane mechanisms, milling cutters, folding machines, gear pumps.
C. Mixers for heavy materials, shears, presses, centrifuges, rotating supports, winches and lifts for heavy
materials, grinding lathes, stone mills, bucket elevators, drilling machines, hammer mills, cam presses,
folding machines, turntables, tumbling barrels, vibrators, shredders.
S Series
/
ATEX
/
IEC
TECHNICAL CATALOGUE
1.4 SERVICE FACTOR
10