Page 57 from: Our summer issue is out now!
57recyclinginternational.com | May/June | 2022
TOOLS & TECHNOLOGY
use and prevent it from being pressed
out of the bearing opening and creat-
ing a thickening in the moving gap
between hammer and rotor protection
cap.
At the same time, compression stress
in the inner circumferential surface of
the bearing opening is reduced,
decreasing material displacement and
lowering the risk of crack formation or
other damages such as chipping.
LOW AND HIGH STRAINS
Another new SWB hammer comes
with an enhanced bearing opening
that increases stress resistance and
facilitates hammer exchange/turning.
Studies to determine the dynamic
strain on shredder hammers show
zones with relatively low strain and
those with extremely high strain.
Enhancing the opening increases the
ability to absorb dynamic strains
impacting on the bearing area during
use as they are absorbed through an
enlarged surface which reduces fric-
tion and therefore lowers the risk of
cracking/breakage in the areas adja-
cent to the bearing opening. A patent
is pending on this invention.
ROTOR PROTECTION CAP
SWB has also invented a reinforced
rotor protection cap that extends the
lifetime of the caps. Practice indicates
that the caps mounted next to a
shredder hammer show a strong wear
on their long side. Such wear requires
these caps to be exchanged earlier
than others.
Replacement requires a temporary
deactivation of the shredder leading
to a loss of production. SWB has rein-
forced the cap on the rim side next to
the hammer to match the lifetime of
all protection caps on the rotor, mak-
ing a premature exchange of the ham-
mer adjacent caps obsolete. This
invention is awaiting a patent.
SAVING COSTS
All three product innovations have in
common that they ease the daily work
of SWB’s customers, save costs and
reduce set-up times. They comple-
ment recent product optimisations:
wear optimised shredder hammers
boast improved stress resistance and
reduced risk of chipping while the
trusted ‘winter hammer’ has the high-
est possible operational reliability
under harsh winter conditions.
Currently, 37 different types of alloy
steel ensure an optimal fit of the wear
parts for their respective uses.
Observation of the entire production
process and extensive quality controls
guarantee consistently high quality
from SWB products.
GLOBAL PRESENCE
SWB teams advise customers on site
in more than 50 countries worldwide
and offer individual support for cus-
tomer specific challenges. Wear parts
are specifically produced for their
dedicated application area to improve
plant efficiency.
SWB opts for a sustainably CO2
reduced production, operates a DIN
EN ISO 50001: 2018 certified energy
management system, and has always
offered its customers the chance to
return worn impact tools and linings
at reasonable cost. With its products
made from steel scrap, SWB is funda-
mentally involved in the steel recy-
cling process of its customers.
Together, they deliver sustainable
environmental protection and save
resources since, by recycling of one
tonne of steel scrap at least 1.67
tonnes of CO2 emissions are prevent-
ed compared to primary raw materi-
als.
Fotobijschrift
LET’S CATCH UP IN MUNICH
After a long gap forced by Covid, the SWB team is
again eager to meet customers and new prospects
at IFAT 2022 in Munich. The four elements to tackle
wear and the topic of sustainability are SWB’s cen-
tral issues for the trade fair that takes place from
30 May until 3 June. In Hall B4, stand 429, the SWB
team will elaborate on the optimal use of wear
parts in shredder technology and explain the
advantages of the newest product developments.
After only a few hours of use, the hammer has already developed a large contact sur-
face. Photo: SWB
Differing wear of the protection caps on a shredder rotor.
Photo: SWB
56-57_stahlwerkebochum.indd 57 02-05-2022 14:45
