Installation Instructions For Flange Mounted Gear Unit; Installation Instructions For Foot Mounted Gear Unit; Installation Instructions For Shaft Mounted Gear Unit; Mounting The Reaction Arm On The Gear Unit - brevini ED2090MR20FL350B3 Manual De Instalación Y Mantenimiento

5.2 Installation instructions for flange mounted gear unit

-They must be attached to a rigid structure with a clean support
surface that is perpendicular to the drive axis.
- The spigots and the coupling surfaces of the gear unit must
be clean without any dents. The checks described above are
particularly important ensure perfect alignment between the
driven shaft and the output shaft of the gear unit. This is even
more important for gear units with a splined fermale output shaft
which cannot bear any radial or axial loads.
- Lubricate all the spigots of the gear unit and the housing seat
with grease or oil.
- After having inserted the gear unit into its housing and having
placed it in the correct position, fit the reference pins in their seats,
then tighten the attachment bolts (recommended minimum class
8.8), applying torque as indicated in the table "torque setting"
paragraph 8.1, making sure that such torque settings are
compatible with the other parts (nuts and/or structure).
NOTE: It is recommended to use class 10.9 or 12.9 bolts where
the application involves severe impacts, frequent stops, starts,
reversals or when it exceeds 70% of the maximum tolerated
torque.
NOTE: During installation, for right angle gear units with a male
input shaft, the input axis may not be in the ideal position.
To solve this problem, it is recommended to do the following:
- for connections using couplings which can compensate for the
misalignments, measure the existing misalignment, check the
acceptable misalignment from the coupling and, if the value is
greater, shim the motor to obtain the acceptable clearances
- for a connection with mechanical devices that cannot be used
to compensate for the clearances, align the motor using shims.
5.3 Installation instructions for a foot mounted gear unit
- Make sure that the assembly feet rest on a flat surface. If not,
shim them so that all are level.
- An improper support for the feet may break the unit.
- Attach the unit using bolts with a minimum class 8.8 tightened
at the torque settings indicated in paragraph 8.1.
5.4 Installation instructions for a shaft mounted gear unit
Particular attention is required when installing these gear units,
therefore follow the instructions described below.

5.4.1 Mounting the reaction arm on the gear unit

- Check that spigots of the gear unit and the reaction arm are
clean, not dented and that there are no traces if paint.
- Lubricate the couplings and insert the reaction arm on the gear
unit spigot, then insert any dowels.
- Attach the reaction arm using minimum class 8.8 bolts.
- It is recommended to use class 10.9 or 12.9 bolts where the
application involves severe impacts, frequent stops or starts,
reversals or when it exceeds 70% of the maximum gear unit
torque.
- Check that the reaction arm anchor system does not lock the
gear unit, but allows it to move freely in space in order to absorb
the movements imposed in it by the shaft.
For torque settings refer to the table "torque setting" paragraph
8.1, making sure that such settings are compatible with the other
parts (nuts and/or attachment structures).

5.4.2 Installing the gear unit with an FS output

NOTE: the connection couplings are supplied ready for
installation, therefore they need not be disassembled prior to the
initial installation.
- Slightly unscrew three bolts of the torque coupling located at
120° until the inner ring can just be turned by and (excessive
tightening might deform the inner ring).
- Insert it above the shaft of the gear unit whose external surface
was previously lubricated.
- degrease the internal surface of the gear unit shaft and the
machine shaft.
- Insert the gear unit on the machine shaft or vice versa
(excessive axial force should not be
necessary).
- Position the center line of the
coupling on the center line of the
useful section of the machine shaft
(see fig. No. 1). During this operation
refer to dimension "a" which will vary
according to the size of the coupling,
as indicated here in the table No. 1
- Use a torque wrench and gradually
tighten all the bolts in the coupling in
a circular direction (not diametrically
opposed) until they are fully tightened
at a torque setting corresponding to
the value reported in the table No. 1.
- Check that the 2 rings remain concentric and parallel while
tightening, keeping in mind that the maximum tolerated
parallelism error is 0.25-0.35% of the external diameter of the
couplings.
NOTE: Excessive tightening may permanently deform the inner
ring, thus refer to the torque settings indicated in the table.
5.4.3 Disassembling the coupling and the gear unit
- Gradually release the attachment bolts in a circular direction.
Initially each bolt must be backed off only a quarter of a turn
to prevent the attachment elements from seizing and to avoid
tilting.
- Remove the gear unit from the driven shaft. To do this a hole
on the gear unit shaft can also be used to pump oil under low
pressure so that it can be pulled off gradually.
- remove the coupling from the gear unit shaft.
Table No. 1
Dimensions
Disk type
d. sh. d x D
SD 62 M 50 62 x 110
SD 100 M 75 100 x 170
SD 125 M 90 125 x 215
SD 140 M 100 140 x 230
SD 165 M 120 165 x 290
SD 175 M 130 175 x 300
SD 185 M 140 185 x 330
SD 185 H 140 185 x 330 112
SD 220 H 165 220 x 370 134
SD 240 H 180 240 x 405 144
SD 280 H 220 280 x 460 172
SD 340 H 260 340 x 570 200
SD 390 H 300 390 x 660 212

5.4.4 Installing the gear unit with an FP output

- Insert the stop ring, if provided, in its housing on the shaft pos.
n°1.
- Grease the seats of the o-rings pos. N°2 and 3 on the cover
pos.n°4; then insert the respective o-rings in their seats; then
insert the cover on the shaft.
- Insert the other stop ring pos.n°5, then the tongue pos.n°6 in
their respective seats on the shaft.
- Assemble the torque arm pos. N°7 on the reduction gear.
- Suitably lubricate both the shaft and its seat (reduction gear
female shaft); then carry out coupling of the shaft and the
reduction gear (do not force).
- Place the cover pos. n°4, clamping it with the screws and
Fig. n. 1
Bolts
H2 n Tipo Ma
29 10 M6 x 25 12
43 12 M8 x 35 29
52 12 M10 x 40 58
58 10 M12 x 45 100
68 8 M16 x 55 240
68 8 M16 x 55 240
85 10 M16 x 65 240
15 M16 x 80 240
20 M16 x 90 240
15 M20 x 100 490
20 M20 x 120 490
20 M24 x 120 820
24 M24 x 140 820
31
a
17
30
35
40
45
45
55
55
67
72
87
102
120