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CONSTRUCTION WORLD
APRIL
2016
owever, they have a longer
lifetime thanks to their EC
technology, lasting for twice as
long as tools which do not have
EC motors. They are therefore
especially suitable for serious
applications and enable finishing trades such
as electricians, plumbers and joiners to work
quickly and efficiently.
Advantages of EC technology
at a glance
Unlike conventional DC electric motors with
carbon brushes, the brushless EC motors from
Bosch are completely maintenance-free and
work with a degree of efficiency of more than
80% instead of 60 to 70%. The high degree of effi-
ciency results in less heat loss. The tools do not
get as hot and can perform up to 30% more work
per battery charge.
In addition to this, the Electronic Motor
Protection (EMP) protects them against over-
load: it shuts the motor down immediately if it
stalls. As a result of these factors, the lifetime of
Bosch cordless tools with EC motors is double
that of tools with conventional motors. EC tech-
nology also allows for a very compact and light-
weight design of the tools. The cordless combis
are only 189 mm long. This enables professional
tradespeople to easily use them overhead and in
tight spaces or hard-to-reach areas.
Powerful tools for varied and
continuous use
The GSB 18 V-EC Professional cordless combis
offer professional tradespeople additional
flexibility: they can be used not only to drill holes
in wood and steel, but also in masonry up to 13
mm diameter. The features of the drill/drivers
and combis are completed by a motor brake,
which helps to make work precise when driving
rows of screws, an integrated LED light, a mount-
able bit holder, and a belt clip that the user can
conveniently hang the tool on.
*The new cordless combis will be
available at specialist retail outlets from
June 2016 onwards.
COVER STORY
Exceptionally
EFFICIENT
and
DURABLE
Bosch has equipped cordless combis in the 18 volt
classes with brushless EC motors. In future, the range
will include the GSB 18 V-EC Professional combis. This
is part of the ‘dynamicseries’ from Bosch – a series of
especially compact tools with long battery runtime –
and is based on tried-and-tested models.
Technical data
GSB 18 V-EC
Rated voltage (V)
18
Battery capacity (Ah)
2 - 6
No-load speed (1/min)
0-600 / 1 900
Impact Rate (1/min)
0-600 / 1 900
Max. torque (hard /soft
joint) (Nm)
60/31
Max. drilling Ø in wood/
steel/masonry (mm)
38/13/13
Chuck capacity (mm)
13