FLENDER B3 A Series - Taconite Seal; Figure 3-5 Taconite Seal

3.6.2 Taconite seal
The taconite seal is a combination of two sealing elements:
• Rotary shaft sealing ring to prevent the escape of lubricating oil
• Grease-󹪝lled dust seal (comprising a labyrinth and a lamellar seal) to allow operation of the
gear unit in extremely dusty environments
The taconite seal is ideal for use in dusty environments.
NOTICE
Gear unit leaks caused by poor sealing
Regrease the labyrinth seals at the speci󹪝ed regreasing intervals. The regreasing intervals are
speci󹪝ed in the Maintenance schedule (Page 102).
A taconite seal is illustrated in the diagram below:



① Lamellar seal ③ Flat grease nipple
② Rotary shaft sealing ring ④ Labyrinth, 󹪝lled with grease, can be regreased
Figure 3-5 Taconite seal
NOTICE
Sparking, inadmissible temperature rise and shaft seal wear due to insu󹪟cient gap
dimension
Sparking, inadmissible temperature rise and shaft seal wear possible due to insu󹪟cient gap
dimension
In the case of a shaft seal with taconite seals, ensure that the set gap dimension of 1
+0.5
mm on
the grease labyrinth is not changed when the input and output elements (e.g. coupling parts)
are mounted. Rotating and stationary parts must not touch.
Description
3.6 Shaft seal
Assembly and operating instructions A5051en
28 Edition 06/2020