FLENDER H2SH 24 - Figure 3-8 Tacolab Seal

The Tacolab seal is a combination of two sealing elements:
● Labyrinth seal comprising two labyrinth sealing rings to prevent the escape of lubricating
oil
● Grease-filled dust seal (comprising a labyrinth and a lamellar seal) to allow operation of the
gear unit in extremely dusty environments
A Tacolab seal is illustrated in the diagram below:



① Outer labyrinth seal ④ Labyrinth, filled with grease, can be regreased
② Inner labyrinth seal ⑤ Grease nipple
③ Lamellar seal
Figure 3-8 Tacolab seal
NOTICE
Sparking, inadmissible temperature rise and shaft seal wear due to insufficient gap dimension
Sparking, inadmissible temperature rise and shaft seal wear possible due to insufficient gap
dimension
If the shaft is sealed by Tacolab seals, make sure that the set gap dimension of 1
+0.5
mm at
the grease labyrinth is not altered when the input and output elements (e.g. coupling
elements) are installed. Rotating and stationary parts must not touch.
For reliable operation, Tacolab seals require a stationary, horizontal installation position
without any contact with dirty water ‐ or high dust levels. Overfilling the gear unit can result in
leaks, the same applies to oil with a high foam content.
NOTICE
Gear unit leaks caused by poor sealing
Gear unit leaks caused by poor sealing are possible.
Regrease the labyrinth seals at the specified regreasing intervals. The regreasing intervals
are specified in the Maintenance schedule (Page 85).
Description
3.6 Shaft seal
Gear unit 5118en
Operating Instructions 10/2017 29