Construction World April 2016

COVER STORY

EFFICIENT

Exceptionally

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.

and

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.

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Technical data

GSB 18 V-EC

Rated voltage (V)

18

Battery capacity (Ah) No-load speed (1/min) Impact Rate (1/min) Max. torque (hard /soft joint) (Nm) Max. drilling Ø in wood/ steel/masonry (mm) Chuck capacity (mm)

2 - 6

0-600 / 1 900 0-600 / 1 900

60/31

38/13/13

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CONSTRUCTION WORLD APRIL 2016