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 RIDUTTORI
CHIARAVALLI TRASMISSIONI S.P.A. |
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| WORM GEARED MOTORS AND WORM GEAR UNITS |
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All of the bodies are painted with RAL 9022 aluminium colour to protect the parts from aging and to give better protection against microblowholes
that may be present in the aluminium.
The gears are supplied with at least one filling plug that is also used during testing to check for possible
leaks.
A connection flange allows two gears to be combined in order to obtain high gear
ratios.
Four sizes of CHPC pre-stage gears are available to pair with the
gears; these are also constructed in aluminium and are painted like
the worm gears.
All of the groups are supplied with a lubricant whose characteristics are described in the following
table.
LUBRICATION
The size 025 to 090 gears are supplied complete with synthetic oil and therefore do not require any
maintenance. The size 110 and 130 gears are supplied with the quantity of mineral oil foreseen for the B3 assembly position. It is the client’s responsibility to adapt
the quantity of oil to the assembly position and in addition, to substitute the filling
plug, supplied closed for transport reasons, with the one equipped with a hole attached to the
gear. If the breather plug is not installed it may create internal pressure with a consequent
leakage of oil from the oil seals. For the sizes 110 and 130 we recommend that the oil is changed after the running in
period, approx. 300 working hours.
MOTOR MOUNTING FLANGES
Gears that are supplied with mounting flanges must be assembled with motors whose shaft and flange tolerances correspond to a
“normal class” of quality in order to avoid vibration and forcing of the input
bearing. Motors supplied by Chiaravalli guarantee that this requirement is
fulfilled. For ease of consultation, the correspondence of the size of the B5 and B14 motor with the sizes of the shaft
and the motor connection flange are shown in the following
table.
Remember that, as the motor connection flanges are separate from the body it is also possible to have a shaft / flange combination
that does not correspond to the table, e.g. 19/140, thereby offering adaptability for other non-unified models such as the brushless or
direct current types.
N.B. From size 25 to 63 the gears are always supplied in the Universal position and can therefore be mounted in any position, from
size 75 to size 130 if the position required differs from B3 it must be
specified. In particular, in the event that a gear in position B3 is to be mounted in positions V5 or V6, the bearing positioned in the upper side
must be lubricated using suitable grease that ensures proper
lubrication. We have tested Tecnolubeseal POLYMER 400/2
grease.
MOTOR MOUNTING FLANGES AVAILABLE
The choice of power installed is tied to the unification of the
motors, therefore it is sometimes in exuberance compared to the
gear; always verify the maximum torque indicated when making the
selection and if in doubt please contact our technical office. |
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| CHB WORM GEARED MOTORS AND WORM GEAR UNITS |
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All the aside
covers, swinging and with feet, have O-Rings instead of traditional flat
gaskets. The sizes 03-04-05 allow the rotation of the feet without disassembling
them; furthermore the versions with swinging aside covers allow the lateral flanges to be fitted on both
sides with simple fixing screws.
The worm screw has a ZI involute profile: with this worm-wheel coupling we shall get a better performance with a temperature
reduction.
The gearboxes and motors are painted with RAL 9022 aluminium colour epoxy powder to protect the parts from oxidation and against
micro—blowholes that can come during the pressure of
die-castings. The CHPC pre-stage gears (already present in the catalogue of
CHM) can also be mounted with this range, obtaining a gear ratio up
to 1:300. For bigger reductions is possible to have two gears together using an appropriate kit.
LUBRICATION
All of the groups are supplied with a synthetic lubricant maintenance free and can be mounted in any position. The types of lubricants
are described in the table here below.
MOTOR MOUNTING FLANGES
Gears supplied with mounting flanges must be assembled with motors whose shaft and flange tolerances correspond to a “normal” class
of quality in order to avoid vibration and forcing of the input
bearing. Motors supplied by Chiaravalli guarantee this requirement
fulfilled.
For ease of consultation, the correspondence of the size of the B5 and B14 motor with the sizes of the shaft and the motor connection
flange are shown in the following table.
Remember that, as the motor connection flanges are separate from the body it is also possible to have a shaft / flange combination
that does not correspond to the table, e.g. 19/140, thereby offering adaptability for other non-unified models such as the brushless or
direct current types.
FEET ROTATION
Gears with feet can be rotated into the N and V positions by simply unscrewing the fixing
screws. We recommend that some sealant is applied to the 4 screws close to the worm
screw, as the holes are through holes.
WORM GEARED MOTORS AND WORM GEAR UNITS
PERFORMANCE WITH 4-POLE MOTORS - 1400 REVS. INPUT
WORM GEAR WITH PRE-STAGE MODULE
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| RIDUTTORI COASSIALI CHC |
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CHC SERIES HELICAL GEAR UNITS
INTRODUCTION
CHC series helical gear units is a new generation
product, which designed basing on the modular system.
It can be connected respectively with motors such as normal motor, brake motor, explosion-proof motor,
IECmotor B5 - B14. This kind of product is widely used in drive fields such as
textile, foodstuff, beverage,
chemical industry, packaging and so on.
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PRODUCTS CHARACTERISTICS
· Modularity
· High efficiency
· Low noise
· Universal mounting
· Aluminum housing, light in weight
· Gears in carbonize hard, grinded
· Lubricant maintenance free
CHC Series helical gear units are manufactured in 5 sizes (+ 1 on
request). Power 0.12-4KW; Ratio 5-46;
Torque max 120-500 Nm. It can be connected (foot, flange) discretionary and use multi-mounting positions
according to cutomers’ requirements.
GEAR UNIT SELECTION TABLES
INSTALLAZIONE
· I dati riportati sulla targhetta identificativa devono corrispondere al riduttore ordinato.
· Il livello dell’olio dovrà corrispondere alla quantità prevista per la posizione di montaggio richiesta (vedi
catalogo).
· Il fissaggio del riduttore deve avvenire su superfici piane e sufficientemente rigide in modo da evitare
qualsiasi vibrazione.
· Il riduttore e l’asse della macchina da movimentare devono essere in perfetto allineamento.
· In caso si prevedano urti, sovraccarichi o blocchi della macchina il cliente dovrà provvedere all’istallazione di
limitatori, giunti, salvamotori etc.
· Gli accoppiamenti con pignoni, giunti, pulegge ed altri organi devono essere fatti previa pulizia delle parti ed
evitando urti nel montaggio poiché questo potrebbe danneggiare i cuscinetti ed altre parti interne.
· Nel caso il motore sia di fornitura del cliente questi dovrà accertarsi che le tolleranze di flangia ed albero
corrispondano ad una classe “normale”, i nostri motori rispondono a questa esigenza.
· Verificare che le viti di fissaggio del riduttore e dei relativi accessori siano correttamente serrate.
· Adottare gli opportuni accorgimenti per proteggere i gruppi da eventuali agenti atmosferici aggressivi.
· Dove previsto proteggere le parti rotanti da possibili contatti con gli operatori.
· Nel caso i riduttori vengano verniciati proteggere gli anelli di tenuta ed i piani lavorati.
· Tutti i riduttori sono verniciati colore grigio RAL 9022.
FUNZIONAMENTO E RODAGGIO
· Per ottenere le migliori prestazioni è necessario provvedere ad un adeguato rodaggio dei riduttori
incrementando la potenza gradualmente nelle prime ore di funzionamento, in questa fase un aumento delle
temperature è da considerarsi nella norma.
· In caso di funzionamento difettoso, rumorosità, perdite olio etc. arrestare immediatamente il riduttore e, dove
possibile, rimuovere la causa, in alternativa inviare il pezzo alla nostra sede per i controlli.
MANUTENZIONE
· I riduttori ad ingranaggi sono lubrificati con olio sintetico
permanente, pertanto non richiedono alcuna manutenzione.
CONSERVAZIONE A MAGAZZINO
· Nel caso di lunga conservazione a magazzino, superiore a tre mesi, si consiglia di proteggere alberi e piani
lavoratori con antiossidanti e di ingrassare gli anelli di tenuta. |
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| CHIARAVALLI TRASMISSIONI S.P.A. |
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