The next headings consist of details on vital aspects for choice and proper use of gearbox.
For precise data within the gearbox range,see the relevant chapters.
one.0 OUTPUT TORQUE
1.1 Rated output torque
Mn2 [Nm]
The torque which will be transmitted continuously by way of the output shaft, with all the gear unit operated beneath a support aspect fs = 1.
one.two Demanded torque
Mr2 [Nm]
The torque demand based on application necessity. It truly is encouraged to become equal to or much less than torque Mn2 the gearbox underneath study is rated for.
one.3 Calculated torque
Mc2 [Nm]
Computational torque value to become employed when picking the gearbox.
It’s calculated considering the needed torque Mr2 and support aspect fs, as per the relationship here right after:Mc2 = Mr2 ?¡è fs ?¨¹ Mn2
2.0 Power
two.1 Rated input electrical power
Pn1 [kW]
The parameter might be located within the gearbox rating charts and represents the KW which will be securely transmitted towards the gearbox, primarily based on input velocity n1 and services element fs= 1.
two.2 Rated output electrical power
Pn2 [kW]
This value may be the power transmitted at gearbox output. it may be calculated with the following formulas:
Pn2 = Pn1 ?¡è |?d
Pn2= Mn2*n2/9550
3.0 EFFICIENCY
Efficiency is often a parameter which features a main influence around the sizing of specified applications, and generally depends on gear pair designelements. The mesh data table on webpage 9 shows dynamic efficiency (n1=1400)and static efficiency values.
Try to remember that these values are only achieved after the unit is run in and it is with the working temperature.
3.1 Dynamic efficiency
[|?d]
The dynamic efficiency could be the relationship of energy delivered at output shaft P2 to electrical power applied at input shaft P1:
|?d =P2/P1
3.two Static efficiency[|?s]
Efficiency obtained at start-up on the gearbox. While this is certainly commonly not major element for helical gears, it might be as an alternative critical when choosing worm gearmotors operating beneath intermittent duty.
four.0 Support Element
The service aspect (fs ) depends upon the working problems the gearbox is subjected on the parameters that need to be taken into consideration to pick one of the most ample servies factor accurately comprise:
one. type of load on the operated machine : A – B – C
2. length of each day operating time: hours/day(?¡Â)
3. start-up frequency: starts/hour (*)
Style of LOAD: A – uniform,fa?¨¹0.3
B – reasonable shocks, fa?¨¹3
C – heavy shocks, fa?¨¹10
fa=Je/Jm
–Je(kgm2) second of the external inertia lowered on the drive shaft
–Jm(kgm2) second of inertia of motor
–If fa>10 please get hold of our Technical Support
A -Screw feeders for light components, supporters, assembly lines, conveyor belts for light supplies, small mixers, lifts, cleaning machines, fillers, control machines.
B -Winding units, woodworking machine feeders, products 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 elements, shears, presses, centrifuges, rotating supports, winches and lifts for hefty materials, grinding lathes, stone mills, bucket elevators, drilling machines, hammer mills, cam presses, folding machines, turntables, tumbling barrels, vibrators, shredders.