The next headings contain data on vital elements for variety and correct utilization of gearbox.
For unique data over the gearbox range,see the appropriate chapters.
1.0 OUTPUT TORQUE
1.one Rated output torque
Mn2 [Nm]
The torque that can be transmitted constantly by means of the output shaft, using the gear unit operated beneath a support factor fs = one.
1.two Demanded torque
Mr2 [Nm]
The torque demand based mostly on application requirement. It really is recommended for being equal to or much less than torque Mn2 the gearbox underneath examine is rated for.
1.3 Calculated torque
Mc2 [Nm]
Computational torque value to become employed when picking out the gearbox.
It is actually calculated considering the expected torque Mr2 and support component fs, as per the partnership here right after:Mc2 = Mr2 ?¡è fs ?¨¹ Mn2
2.0 Electrical power
two.one Rated input energy
Pn1 [kW]
The parameter may be discovered while in the gearbox rating charts and represents the KW that may be safely transmitted for the gearbox, primarily based on input speed n1 and services component fs= one.
2.two Rated output electrical power
Pn2 [kW]
This value could be the energy transmitted at gearbox output. it could possibly be calculated with the following formulas:
Pn2 = Pn1 ?¡è |?d
Pn2= Mn2*n2/9550
three.0 EFFICIENCY
Efficiency is a parameter which features a significant influence about the sizing of particular applications, and in essence is determined by gear pair designelements. The mesh information table on webpage 9 displays 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 operating temperature.
3.one Dynamic efficiency
[|?d]
The dynamic efficiency could be the connection of energy delivered at output shaft P2 to electrical power applied at input shaft P1:
|?d =P2/P1
three.2 Static efficiency[|?s]
Efficiency obtained at start-up in the gearbox. Though this can be typically not substantial aspect for helical gears, it might be alternatively crucial when choosing worm gearmotors working below intermittent duty.
4.0 Service Issue
The service component (fs ) relies on the working circumstances the gearbox is subjected on the parameters that must be taken into consideration to select one of the most ample servies element appropriately comprise:
1. type of load from the operated machine : A – B – C
two. length of day by day operating time: hours/day(?¡Â)
three. start-up frequency: starts/hour (*)
Type of LOAD: A – uniform,fa?¨¹0.three
B – moderate shocks, fa?¨¹3
C – heavy shocks, fa?¨¹10
fa=Je/Jm
–Je(kgm2) minute in the external inertia decreased in the drive shaft
–Jm(kgm2) second of inertia of motor
–If fa>10 please speak to our Technical Service
A -Screw feeders for light elements, supporters, assembly lines, conveyor belts for light materials, compact mixers, lifts, cleaning machines, fillers, handle machines.
B -Winding units, woodworking machine feeders, products lifts, balancers,threading machines, medium mixers, conveyor belts for hefty materials,winches, sliding doors, fertilizer scrapers, packing machines, concrete mixers, crane mechanisms, milling cutters, folding machines, gear pumps.
C -Mixers for hefty supplies, 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.