Technical data

11-6 Assembly Instructions Rexroth IndraDyn H
DOK-MOTOR*-MBS-H******-PR02-EN-P
11.3 Securing Screws with LOCTITE
1)
LOCTITE is a plastic gluing agent that is applied in liquid form to the
parts to be assembled. The adhesive remains liquid as long as it is in
contact with oxygen. Only after the parts have been mounted does it
convert from its liquid state into hard plastic. This chemical conversion
takes place under exclusion of air and the produced metallic contact.
The result is a form-locking connection. It is resistant to shocks and
vibrations.
The hardening accelerator Activator 7649 reduces the hardening time of
the adhesive.
LOCTITE 620 is heat-resistant up to +200°C, LOCTITE 243 up to
+150°C.
Proceed as follows:
1. Clean metal chips and coarse dirt from the threaded hole and screw
or grub screw.
2. Use LOCTITE rapid cleanser 7061 to clean oil, grease and dirt
particles from the threaded hole and screw/grub screw. The threads
must be absolutely rust-free.
3. Spray LOCTITE activator into the threaded hole and let it dry.
4. Use LOCTITE adhesive to moisten the same threaded hole in its
entire thread length thinly and evenly.
5. Screw in the matching screw/grub screw.
6. Allow the glue to harden. Heed the setting times in Fig. 11-4.
Securing screw connections with LOCTITE in tapped blind holes:
The adhesive must always be dosed into the tapped hole, never on the
screw. This prevents the compressed air from extruding the adhesive
when the screw or grub screw is screwed in.
Hardened Hard to the
touch without
activator
Hard to the
touch with
activator 7649
LOCTITE 243 ~ 12h 15-30 min 10-20 min
LOCTITE 620 ~ 24h 1-2h 15-30 min
Fig. 11-4: Setting times for LOCTITE glues
To detach the connection, use a wrench for unscrewing the screw or
grub screw in the traditional way.
LOCTITE 620 has a breakaway torque of 20-45 Nm; for LOCTITE 243 it
is 14-34 Nm (acc. to DIN 54 454). Blowing hot air on the screw
connection reduces the breakaway torque.
After the screw / threaded pin has been removed, it is necessary to
remove any gluing agent residue from the hole (e.g., by shaving the
thread).
1)
This section has been checked by LOCTITE, Germany for accuracy and approved for publication.
General
Gluing
Detach the connection