ITALVIBRAS GIORGIO SILINGARDI M3/65 Serie Guia Tecnica página 21

5.0 BEARING REPLACEMENT
5.0.1 Bearing replacement gr.00-01-10-AF10-20-30
These vibrators have ball and shielded bearings and bearings that
are pre-lubricated for life.
Remove the power supply from the vibrator, disassemble from the
machine, remove the weight covers, the OR seals and disassemble
the eccentric weightss.
Disassemble the 2 (two) Seeger rings mounted on the flanges near
to the bearings. For these vibrators the flanges form a unique motor
group unit with the casing and cannot be disassembled.
Push the shaft from one side using an adequate force until it exits
from the opposite side (Fig.34, page 11). The shaft will drag at least
one bearing while one remains in its flange. By exercising axial pres-
sure, remove the bearing from the shaft and the one remaining in the
flange.Check the bearing seat in the flange. If it is worn the entire
motor unit must be replaced. The flanges are fixed tightly to the casing
and cannot be replaced.Mount the first bearing in a flange paying
attention that it remains just beyond the seat of the Seeger ring, then
mount the Seeger ring.Pressure-mount the second bearing onto the
shaft from the side where the bearing is blocked (ATTENTION: the
shaft is not symmetrical, from one side the bearing is blocked in a
radial manner, from the other side the bearing is free) (Fig.35, page
11).Insert the shaft into the motor unit from the correct side (Fig.36,
page 11) and press until the shaft enters its final position, mount the
second Seeger ring.Re-mount the weights, seals and weight covers
(Fig.39, page 11). Control the state of the seals during this operation
and replace them if necessary.Turn the shaft manually to ensure that
it turns freely without axial play.
5.0.2 Bearing replacement gr.AF30-AF33-35 ... up to gr.110
These vibrators have roller bearings, already lubricated in the factory
by ITALVIBRAS.
Remove the power supply from the vibrator, disassemble it from the
machine, remove the weight covers, the OR seals and disassemble
the eccentric weights.
Remove the flanges from the casing using the threaded extraction
holes (Fig. 37, page 11). Remove the shaft and the second flange.
Remove the bearing cover and slide the bearing out through the
extraction holes (Fig. 38, page 11). Using the necessary equipment
on the bench, replace the bearings and the specific hold rings.
Check the bearing seat in the flange. If worn replace the flange. On
re-mounting the bearings pay attention that they rest correctly on the
stroke of their seat. Half fill the chamber between the sealing ring
and the bearing with grease.
Apply the new grease in the quantity prescribed in the «Technical
Features» table (page 87-97) spreading deeply inside the bearing
applying pressure to allow penetration of the grease into the rolling
parts.
Once the operation has been carried out , re-mount by performing
the operations in the opposite order taking care to maintain
perfect orthogonality of the flange with respect to the casing
(Fig. 39, page 11). Pay attention that the seals are correctly
positioned in their seats. Control the state of the seals during
this operation and replace them if necessary.
Turn the shaft manually and ensure that it has axial play between
0.5 and 1.5 mm.
ATTENTION: Every time the afore-mentioned maintenance ope-
rations are carried out it is recommended that all disassembled
screws and spring washers are replaced and that the screws
are tightened using a dynamometric wrench.
ENGLISH
5.1 LUBRICATION
All bearings are correctly lubricated on mounting the vibrator.
All ITALVIBRAS vibrators are realised to use the "FOR LIFE",
lubrication system and therefore do not require periodical
lubrication.
Only for heavy work, as for example 24 hour service with high en-
vironmental temperatures, starting from gr. AF33 and 35 periodical
re-lubrication of the bearings is recommended, using the two external
greasers with the following type of grease:
- speed of 3000 rpm or higher: KLUEBER ISOFLEX NBU 15;
- speed of 1800 rpm or lower: KLUEBER STABURAGS NBU 8
EP;
- MVSI special series 600-720 rpm: KLUEBER ISOFLEX NBU 15.
Approximately, on average, the frequency of re-lubrication can be
included between 1000 and 5000 hours and depends on the ope-
rative conditions and the type of vibrator, therefore it can be lower
or higher than the indicated values. The quantity of grease to be
introduced on periodical lubrication is indicated in the table on page
87. It is advised to contact ITALVIBRAS for particular uses which
is at complete disposal to advise the client on the best lubrication
possible for the specific use.
Never mix greases even if they have similar features. Excessive
quantity of grease causes increased heating of the bearings and
consequent anomalous current absorption.
Respect the ecological laws in force in the country in which the
equipment is used, relative to use and disposal of products used
for cleaning and maintenance of the vibrator. Always comply with
recommendations of the manufacturer of these products.
If the machine must be demolished, comply with the anti-pollu-
tion regulations envisioned in the country of use.
Remember that the Manufacturer is always available for any
type of assistance and spare parts.
5.2 SPARE PARTS
On requesting spare parts always state:
- Type of vibrator (TYPE detectable from the identification plate).
- Vibrator series (SERIES detectable from the identification pla-
te).
- Serial number (SERIAL NO. detectable from the identification
plate).
- Power supply voltage and frequency (VOLT and HZ detectable
from the identification plate).
- Spare part number (detectable from the spare part table starting
from page 98) and desired quantity.
- Exact destination address of the goods and means of delive-
ry.
ITALVIBRAS, declines any liability for incorrect forwarding due
to incomplete or confused requests.
21
ENGLISH