MOTOVARIO
Information
Helical bevel geared motors
5
Information
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
(in-lb
2
) moment of reduced external inertia at the drive-shaft
-
Jm (in-lb
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.
Service factor