PRESS RELEASE
March 2008
Fischer hammerset EA II
Load capacity up to concrete load limit
The fischer group of companies of Waldachtal has
upgraded its hammerset anchor. The new EA II has
significantly improved properties and excels with ultimate
load bearing capacity. Concrete anchor bases can now
be utilised up to their load limits. And a formed rim
prevents the anchor from slipping deeper during
installation.
The superiority of the EA II shows in the direct
comparison. It can take as much as 69% higher tensile
loads in non-cracked concrete than other products on
the market. Compared with its predecessor, the tensile
loads are as much as 100% higher in non-cracked
concrete, and the shear capacity is as much as 157%
higher. Up to 350% higher tensile loads apply in multiple
fixings of non-load-bearing systems in non-cracked
concrete. With an embedment depth of 40 mm the EA II
M10, for instance, reaches a load-bearing capacity in
tension load tests of 6.1 kN and is therefore a great deal
more efficient than similar competitors’ products.
The EA II is designed for use in construction and civil
engineering, but also for locksmith work and in steel
construction for single fixings (ladders, shuttering props,
steel constructions) in non-cracked concrete if the failure
of a fixing point would result in danger to life and health
or in substantial property damage. It is also suitable for
use in structural engineering for multiple fixings of
redundant non-load-bearing systems (suspended
ceilings, pipes, cable routes) both in cracked and noncracked concrete.
The European Technical Approval (ETA) is valid for noncracked concrete B25 to B55 or C20/25 to C50/60 and
for the (redundant) multiple fixing of non-load-bearing
systems in cracked concrete C12/15 to C50/60. In terms
of passive fire protection, the EA II also offers a fire
resistance of as much as 120 minutes (R120 under
TR020).
The EA II is available both in zinc-plated steel and in
stainless steel grade A4 (1.4401 / 1.4571). The range
includes the sizes M6 to M20 and shows a number of
special features: the thicker-walled EA II M12 D is
suitable for fixing diamond saws and core drills. The
EA II 10x30 is chosen if a thread diameter size M10 is
required (e. g. Factory Mutual (FM) Approval) and if a
lower load-bearing capacity or a lower drilling depth is
sufficient to avoid potential reinforcement hits. The
EA II M8x40 is suitable if size M8 is sufficient (lower
priced than M10) but a somewhat higher load-bearing
capacity is needed in non-cracked concrete (only for
single fixings according to ETA, Option 7).
All material variants have a formed rim which prevents
the anchor from slipping deeper into the drill hole if the
hole has been set to deep and which fills the drill hole
crater better; there is no need to set the drill hole depth
to exact values. The EA II is suitable for all types of
screws or threaded bolts with metric thread.
The EA II is driven in with the manual setting tool
EAW H Plus or with the machine setting tools
EA II S-SDS. The anchor sleeve opens up and is
wedged against the drill hole wall. If set correctly, the
setting tools stamp the EA II with a marking, allowing an
easy visual setting check. With its optimised expansion
cone, the EA II is easier to set and process than many of
the competitors’ products. A few hammer blows are
sufficient. Thanks to the anchor which is now set flush
with the surface, fixtures can be detached and fixed
repeatedly. The ductile steel provides higher safety
against overloads acting on the anchor sleeve, for
instance if a threaded bar is over-tightened.
The new fischer EA II hammerset anchor
uses the full load-bearing capacity of the
concrete. Graphics/photo: © fischerwerke,
Waldachtal