Assembly Of The Options; Shrink-Disc; Mounting, Dismantling; Shrink Disc Exploded View/Parts List - Nidec Leroy-Somer ORTHOBLOC 3000 Inbetriebnahme

4 - ASSEMBLY OF THE OPTIONS

4.1 - Shrink-disc Ot 3132 to Ot 3933
4.1.1 - Mounting
Remove the cover. Remove all grease from shaft and hollow
shaft bore.
1 - Lightly oil the seating of the shrink-disc on the hollow shaft.
2 - Draw shrink-disc onto hollow shaft. Slide shaft and hollow
shaft into one another.
3 - Tighten diametrically opposed clamping screws by hand
whilst aligning the shrink-disc so that the clamping flanges lie
parallel to each other.
Tighten the shrink disc screws, increasing the torque very
progressively to tightening torque indicated in the chart bellow.
It is normal that each screw must be tightened several times
until the torque is obtained.
Ot 31 to 34
Tightening torque for bolts of
shrink-disc (N.m)
Ø shrink disc screws M6
Do not tighten "cross-shaped" but "in one rotation", starting at
the top right and following sketch bellow.

4.2 - Torque arm kit

4.2.1 - Torque arm mounting

Screw the torque arm (17) on the fixing side and machinery by
using screws (195) class 8.8 minimum (according to NFE 27-
005). Centre torque arm. Place the pin.
The screws must be stopped by an anaerobic adhesive (Loctite
Freinfilet normal 243 for example). This adhesive must resist
to vibrations and may allow dismounting of torque arm if
necessary.
Braking torque of fixing screws
Tighten screws simultaneously and progressively.

4.3 - Hollow shaft

1- Check that the cylindrical shaft has been machined in
accordance with standard NF - E 22 - 175, with a slide fit: g6,
(the hub is: H7).
2 - Check that the key is standard and the shaft is the minimum
length tapped at the end (O.Z).
3 - Before mounting, degrease all the parts, taking care not to
splash any solvent on the seals.
Use grease (PAO compound) to lubricate any parts in contact,
to avoid corrosion.
Fixing on a shouldered shaft
O ring seal
12
DRIVE SYSTEMS - ORTHOBLOC 3000
Ot 35 Ot 36 Ot 37 Ot 38
12 30 30 59 100
7xM8 10xM8 12xM10 10xM12 12xM12
Fixing on an untapped shaft
O ring seal
Tightness of shrink disc screws to be controlled
periodically.
Dismantling
1 - Part-release the clamping screws evenly in stages in order
to avoid any tilting of the clamping flanges whilst taking great
care for safety reasons that the clamping screws are not
completely released from the thread bore as the pretensions in
the shrink-disc could cause the discs to jump apart.
2 - Draw the shrink-disc off the hollow shaft, and if applicable,
clean oxidizing on shaft and hollow shaft bore.
4.1.2 - Shrink-disc exploded view/parts list
Ot 39
100
Rep Description
16 Shrink disc cover
204 Cover fixing screw
302 Shrink disc

4.2.2 - Torque arm exploded view/parts list

All the bolts must be screwed up to 70% of their
elastic strength.
Rep Description
17 Torque arm
195 Torque arm fixing screw
213 Pin
281 Flexible mounting
Mounting
Mounting should be performed as described in the procedure
above, without jolting.
The gearbox is mounted on the machine shaft using a threaded
rod, screwed into the shaft.
By screwing the nut down onto the washer, the shaft is
smoothly inserted into the cylindrical hub.
Dismantling
Use a spanner with a diameter corresponding to the shaft
thread and turn until the shaft comes out.
204
016
302
Ot 3132 to Ot 3733
Qty
1
2
1
17
195
213
281
Ot 3132 to Ot 3533 Ot 3633, Ot 3733 Ot 3833
Qty Qty
1 1
3 4
1 1
1 1
O ring seal
O ring seal
Installation guide - ORTHOBLOC 3000
3996 en - 2019.12 / o
Ot 3833, Ot 3933
Qty
1
4
1
Ot 3933
Qty Qty
1 1
8 10
2 2
1 1