 Service Factor |
The service factor(f.s.)depends on the operating conditions the
gearbox is subjected to. Following parameters need to be taken
to select the right service factor.
--type of load of the operated machine A - B - C
--length of daily operating time: hours/day(△)
--start-up frequency: starts/hour (*)
TYPE OF LOAD:A-uniform,fa≤0.3
B-moderate shocks,fa≤3
C-heavy shocks,fa≤10
fa=Jex/Jm
--Jex(kgm2) moment of the external inertia reduced at the drive
shaft
--Jm(kgm2) moment of inertia of motor |
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| To install the reduction unit it is necessary to note the following recommendations |
--The mounting on the machine must be stable to avoid any vibration.
--Check the correct direction of rotation of the reduction unit output shaft before fitting the unit to the machine.
--In the case of particularly
lengthy periods
of storage (4-6 months) if the oil seal is not immersed in the lubricant
inside
the unit,It is
recommended to change it since the rubber could stick to the shaft or even has lost the elasticity
it needs to function properly. speed reducers, gear reducers
--For a shaft mounting, for reduction units with a hollow output shafts, use the torque arms we can supply. If it
is not
possible,make sure that the constraint is axially free and with such play as to ensure free movement for the reduction
unit.
--Whenever possible, protect the reduction unit against solar radiation and bad weather.
--Ensure the motor cools correctly by assuring good passage of air from the fan side.
--In the case of ambient temperatures <-5°C and >+40°C contact technical advise service .
--The various parts ( pulleys, gear wheels, couplings, shafts, etc.) must be mounted on the solid or hollow shafts
using special holes or other systems that anyhow ensure correct operation without risking damage to the bearings
or external parts of the unit
--Painting must definitely not go over rubber parts and the holes on the breather plugs, if there are any.
--Taking out the seal embolism of the oilhole.
--Check the height of the oil level.
--Supposing the gear unit have not coupled with the motor,please pay attention to the following items to make sure
rightly connection. Mounting to B5,B14
--Check whether the tolerance between the shaft and motor flange fit for the essential standard.
--Washing the dirt and the paint on the surfaces of the shaft,center bore and the flange.
--Mounting avoid the gear unit incur strength .
--Check the position and the
difference
of the motor keyslot.
--Lubricate the surfaces in contact to avoid seizure or oxidation. speed reducers, gear reducers
--Starting must take place gradually, without immediately applying the maximum load.
--When there are parts objects or materials under the motor drive that can be damaged by even limited spillage of oil, special
protection
should be fitted. |
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Introduction of
worm gear speed reducer |
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NMRV series
worm gear speed reducer |
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UDL Series planetary cone & disk step-less speed variator |
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