The following headings have information and facts on important aspects for choice and proper use of gearbox.
For precise information to the gearbox range,see the appropriate chapters.
1.0 OUTPUT TORQUE
one.1 Rated output torque
Mn2 [Nm]
The torque that may be transmitted continuously by means of the output shaft, together with the gear unit operated under a service aspect fs = 1.
one.two Necessary torque
Mr2 [Nm]
The torque demand primarily based on application requirement. It is advised for being equal to or much less than torque Mn2 the gearbox under review is rated for.
one.three Calculated torque
Mc2 [Nm]
Computational torque value to get made use of when selecting the gearbox.
It really is calculated looking at the demanded torque Mr2 and service component fs, as per the relationship right here following:Mc2 = Mr2 ?¡è fs ?¨¹ Mn2
two.0 Energy
2.1 Rated input electrical power
Pn1 [kW]
The parameter may be found during the gearbox rating charts and represents the KW that may be safely transmitted to the gearbox, based on input velocity n1 and support aspect fs= 1.
two.2 Rated output energy
Pn2 [kW]
This value could be the power transmitted at gearbox output. it could be calculated with the following formulas:
Pn2 = Pn1 ?¡è |?d
Pn2= Mn2*n2/9550
3.0 EFFICIENCY
Efficiency is usually a parameter which has a significant influence about the sizing of particular applications, and generally is dependent upon gear pair designelements. The mesh information table on webpage 9 shows dynamic efficiency (n1=1400)and static efficiency values.
Remember that these values are only accomplished following the unit is run in and is with the operating temperature.
three.1 Dynamic efficiency
[|?d]
The dynamic efficiency may be the romance of electrical power delivered at output shaft P2 to electrical power applied at input shaft P1:
|?d =P2/P1
3.2 Static efficiency[|?s]
Efficiency obtained at start-up from the gearbox. Though this is frequently not significant issue for helical gears, it may be as a substitute crucial when choosing worm gearmotors operating under intermittent duty.
four.0 Service Issue
The services element (fs ) depends upon the working situations the gearbox is subjected towards the parameters that have to be taken into consideration to pick essentially the most sufficient servies factor the right way comprise:
1. type of load with the operated machine : A – B – C
2. length of every day working time: hours/day(?¡Â)
3. start-up frequency: starts/hour (*)
Type of LOAD: A – uniform,fa?¨¹0.3
B – reasonable shocks, fa?¨¹3
C – heavy shocks, fa?¨¹10
fa=Je/Jm
–Je(kgm2) moment from the external inertia lowered in the drive shaft
–Jm(kgm2) minute of inertia of motor
–If fa>10 please get in touch with our Technical Support
A -Screw feeders for light products, supporters, assembly lines, conveyor belts for light materials, small mixers, lifts, cleaning machines, fillers, management machines.
B -Winding products, 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 hefty materials, shears, presses, centrifuges, rotating supports, winches and lifts for heavy elements, grinding lathes, stone mills, bucket elevators, drilling machines, hammer mills, cam presses, folding machines, turntables, tumbling barrels, vibrators, shredders.