Improving energy and paper machine efficiency by using Wefapress expert knowledge and spare parts - Paper Technology International 2023 - Paper Technology International 2023 - Flipbook - Page 132

Improving energy and paper machine efficiency by using Wefapress expert knowledge and spare parts - Paper Technology International 2023

PAPERTECHNOLOGYINTERNATIONAL Improving energy and paper machine efficiency by using Wefapress expert knowledge and spare parts - Paper Technology International 2023
Case:3
Steady production increases at many paper machines often
force gear drives made up of cast iron wheels to reach their capacity
limits. Vibrations and high noise are the result.
Replacing cast iron wheels with pinions and gear wheels
that have gear rings in plastic eliminates vibrations, ensures
significantly improved smooth running, and often eliminates the
need for expensive lubrication. Another major advantage is that gear
wheels no longer have to be completely dismantled for maintenance
– it is only necessary to loosen a few screws in order to replace
individual segments while the metal rim stays installed in position.
This reduces the conventional downtime of several hours to just
a few minutes and consequently increase the system availability.
Nylatec 360 gear wheels are hydrolysis resistant and get used
successfully in many paper and cardboard mills. Even at the high
temperatures and air humidity found in closed drying hoods, the
material remains stable and doesn’t become brittle. It can absorb
high mechanical forces still after many years of application and that
ensures long service lives.
To support paper mill maintenance Wefapress offers also the
gear wheel mounting service on site.
Figure 5: Gear wheel mounting service at paper mill.
Figure 4: Nylatec360 gear
wheel for drying cylinder
drives.
Case:4
Tambour coupling stars in metal are very expensive, heavy
and difficult to install. Normally there are at least two fitters needed
for installation and in some positions even a working plattform
so that it is not possible for a single shift fitter to change it alone.
Wefapress replaced the coupling stars for different rewinder and
offline coater with flying splice system and biggest demands
due to heavy tambour weights around 25.000 kg and highspeed
production.
The customers profit from
•
low weight and costs
•
easy handling
•
reduced noise
•
improved work safety
Especially due to the reduced weight and the easy handling,
fitters don’t want to install coupling stars in metal anymore.
Figure 6: Coupling star for Tambour Drive.
Talk to the experts
At Wefapress, we understand the challenges and consequences in papermaking process. Since 1895 we serve our customer needs
and our service engineers are allways happy to support with their huge experience of thousands of applications. Talk to the Wefapress
experts in order to improve your spare part handling, energy efficiency, product quality and machine runability.
Our knowledge and huge application experience allows us to work with our customers and to help them get the most from their
systems, while ensuring they achieve both, their operational and process goals.
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