16
Rossi
Operating instructions − UTD.045.06-2013.00_TR_EN
TR
EN
Unless otherwise agreed in the order, products are adequately
packed: on pallet, protected with a polyethylene film, wound with
adhesive tape and strap (bigger sizes); in carton pallet, wound with
adhesive tape and strap (smaller sizes); in carton boxes wound with
tape (for small dimensions and quantities). If necessary, gear redu-
cers are conveniently separated by means of anti-shock foam cells
or of filling cardboard.
Do not stock packed products on top of each other.
4 - Storing
Surroundings should be sufficiently clean, dry and free from ex-
cessive vibrations (
v
eff
≤
0,2 mm/s) to avoid damage to bearings (ex-
cessive vibration should also be guarded during transit, even if within
wider range) and ambient storage temperature should be 0
÷
+40 °C:
peaks of 10 °C above and below are acceptable.
The gear reducers filled with oil must be positioned according to the
mounting position mentioned on the order during transport and storage.
Every six months rotate the shafts (some revolutions are sufficient)
to prevent damage to bearings and seal rings.
Assuming normal surroundings and the provision of adequate pro-
tection during transit, the unit is protected for storage up to 1 year.
For a 2 year storing period in normal surroundings it is necessary to
pay attention also to following instructions:
– generously grease the sealings, the shafts and the unpainted
machined surfaces, if any, and periodically control conservation
state of the protective anti-rust oil;
– for gear reducers and gearmotors supplied without oil: comple-
tely fill the gear reducers with lubrication oil and verify the speci-
fied level before commissioning.
For storages longer than 2 years or in aggressive surroundings or
outdoors, consult Rossi.
5 - lnstallation
5.1 - General
Before the installation, verify that:
– there were no damages during the storing or the transport;
– design is suitable to the environment (temperature, atmosphere,
etc.);
– electrical connection (power supply, etc.) corresponds to motor
name plate data;
– used mounting position corresponds to the one stated in name
plate.
Attention!
When lifting and transporting the gear redu-
cer or gearmotor use through holes or tapped holes of the
gear reducer housing; be sure that load is properly balan-
ced and provide lifting systems, and cables of adequate
section. If necessary, gear reducer and gearmotor masses are sta-
ted in Rossi technical catalogs.
Be sure that the structure on which gear reducer or gearmotor is
fitted is plane, levelled and sufficiently dimensioned in order to
assure fitting stability and vibration absence (vibration speed
v
eff
≤
3,5 mm/s for
P
N
≤
15 kW and
v
eff
≤
4,5 mm/s for
P
N
> 15 kW are
acceptable), keeping in mind all transmitted forces due to the mas-
ses, to the torque, to the radial and axial loads.
For the dimensions of fixing screws of gear reducer feet and the
depth of tapped holes consult the Rossi technical catalogues.
Carefully select the length of fastening bolts when using tapped
holes for gear reducer fitting, in order to assure a sufficient meshing
thread length for the correct gear reducer fitting to the machine
without breaking down the threading seat.
Attention! Bearing life and good shaft and cou-
pling running depend on alignment precision
between the shafts.
Carefully align the gear reducer
with the motor and the driven machine (with the aid of
shims if need be, for gear reducers size ≥ 400 use level tapped
holes), interposing flexible couplings whenever possible.
Incorrect alignment
may cause
breakdown of shafts and/or
bearings
(which may cause overheatings) which may represent
heavy danger for people
.
Do not use motor eyebolts when lifting the gearmotors.
Position the gear reducer or gearmotor so as to allow a free pas-
sage of air for cooling both gear reducer and motor (especially at
their fan side).
Avoid: any obstruction to the air flow; heat sources near the gear
reducer that might affect the temperature of cooling air and of gear
reducer (for radiation); insufficient air recycle and applications hinder-
ing the steady dissipation of heat.
Mount the gear reducer or gearmotor so as not to receive vibrations.
Mating surfaces (of gear reducer and machine) must be clean and suf-
ficiently rough (approximately
R
a ≥ 6,3
m
m) to provide a good friction
coefficient: remove by a scraper or solvent the eventual paint of gear
reducer coupling surfaces.
When external loads are present use pins or locking blocks, if ne-
cessary.
When fitting gear reducer and machine and/or gear reducer and
eventual flange
B5
it is recommended to use
locking adhesives
on the fastening bolts (also on flange mating surfaces).
Before wiring-up the gearmotor make sure that motor voltage
corre-sponds to input voltage. If direction of rotation is not as
desired, invert two phases at the terminals.
Y-
D
starting should be adopted for no-load starting (or with a very
small load) and for smooth starts, low starting current and limited
stresses, if requested.
If overloads are imposed for long periods or if shocks or danger of
jamming are envisaged, then motor-protection, electronic torque
li-miters, fluid couplings, safety couplings, control units or other
similar devices should be fitted.
Usually protect the motor with a thermal cut-out
however,
where duty cycles involve a high number of on-load starts, it is
necessary to utilise
thermal probes
for motor protection (fitted on
the wiring); magnetothermic breaker is unsuitable since its thresh-
old must be set higher than the motor nominal current of rating.
Connect thermal probes, if any, to auxiliary safety circuits
.
Use varistors and/or RC filters to limit voltage peaks due to con-
tactors.
When gear reducer is equipped with a backstop device, see ch. 5.5
and provide a protection system where a backstop device breaking
Designation (see
table on the right)
Non-standard designs
Motor power
Gearmotor
output speed
Gear reducer
nominal power
Two months and year
of manufacture
Mounting position
(when differing from
IM B3 or B5)
Gearmotor
service factor
Transmission
ratio
Ø Flange - motor
shaft
Fig. 1 (for more information, see Rossi technical catalogs; consult us).
Designation
Product
Machine Train of gears
Size
Esecuzione
R, MR
V, IV, 2IV
32 ... 250 UO ...
Worm
R, MR
2I, 3I
32 ... 180 FC ..., PC ..., UC ...
Coaxial
R, MR
I, 2I, 3I, 4I
40 ... 631 UP ...
Helical
R, MR
CI, ICI, C2I, C3I 40 ... 631 UO ...
Bevel helical
R
C
80 ... 320 PO ..., FO ...
Right angle
R
2I
85 ... 250 OP
Shaft mounted
Note
: Starting from 04/05/2010 the company name ROSSI MOTORIDUTTORI S.p.A. has been changed into Rossi S.p.A., and the nameplates have been updated accordingly.
Type of machine, train of
gears, size, design
Non-standard design
codes (SR = gear
reducer for automation)
Maximum accelerating
torque on low speed
shaft
Transmission ratio
Two-month and year of
manufacturing
Serial code
Mounting position
Angular backlash on low
speed shaft
Coupling dimension on
input side
