BA 5200 EN 08/2010
5.6.2
Labyrinth seals
Labyrinth seals are noncontacting seals. They therefore require no maintenance and ensure favourable
temperature characteristics.
Fig. 7:
Fey labyrinth seal
For reliable operation, the labyrinth seals require stationary, horizontal positioning
away from dirty water and heavy dust. Overfilling of the gear unit can cause leakage,
as can oil with high foam content.
5.6.3
Taconite seals
Taconite seals were specially developed for use in a dusty environment. The penetration of dust is
prevented by a regreasable labyrinth seal.
1
2
3
4
Fig. 8:
Taconite seal
1
Radial shaftsealing ring
3
Greasecharged labyrinth seal, rechargeable
2
Lamellar seal
4
Flat grease nipple AM10x1 to DIN 3404
For recharging the labyrinth seals with grease, the specified frequency must be
observed (see Table 13 in item 10.1).