New Bosch screwdriver generation with EC motor

Top tools for serial applications

  • Double the lifetime of tools without EC motors
  • Compact and lightweight screwdrivers with long battery runtime
  • Powerful: high torque for a wide range of applications

Bosch is now also equipping cordless drill/drivers and cordless combis in the 14.4 and 18 volt classes with brushless EC motors. In future, the range will include the GSR 14,4 V-EC Professional and GSR 18 V-EC Professional drill/drivers and the GSB 14,4 V-EC Professional and GSB 18 V-EC Professional combis. They are part of the “dynamicseries” from Bosch – a series of especially compact tools with long battery runtime – and are based on tried-and-tested models. However, 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 serial 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 percent instead of 60 to 70 percent. The high degree of efficiency results in less heat loss. The tools do not get as hot and can perform up to 30 percent more work per battery charge. In addition to this, the Electronic Motor Protection (EMP) protects them against overload: 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 technology also allows for a very compact and lightweight design of the tools. The two cordless drill/drivers in the 14.4 and 18 volt classes have a head length of only 179 millimeters, while the two cordless combis are only 189 millimeters long. This enables professional tradespeople to easily use them overhead and in tight spaces or hard-to-reach areas.

Powerful tools for continuous use
The new screwdrivers with EC motor are designed for continuous use on the jobsite, in the workshop or in semi-industrial production such as furniture construction, the electrical industry or vehicle construction. Due to their compact design, the tools are especially suitable for driving rows of smaller screws, but also offer sufficient power for larger screw and drilling diameters. A high torque – the GSR 18 V-EC Professional, for example, provides 31 newton meters in a screwdriving application in softwood – and a 13 millimeter Auto-Lock chuck give the tools a wide range of applications. The GSB 14,4 V-EC Professional and 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 millimeter 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 mountable bit holder, changeable color clips for identifying each tool, and a belt clip that the user can conveniently hang the tool on.

The new cordless drill/drivers and combis will be available at specialist retail outlets from May 2014 onwards in the following versions:

GSR 14,4 V-EC Professional and GSR 18 V-EC Professional

  • in the L-Boxx with two 4.0 Ah CoolPack batteries and a quick charger for 339 and 389 euros respectively,
  • in the L-Boxx with two 2.0 Ah CoolPack batteries and a quick charger for 289 and 339 euros respectively.
GSB 14,4 V-EC Professional and GSB 18 V-EC Professional
  • in the L-Boxx with two 4.0 Ah CoolPack batteries and a quick charger for 359 and 409 euros respectively,
  • in the L-Boxx with two 2.0 Ah CoolPack batteries and a quick charger for 309 and 359 euros respectively.
All prices are recommended retail prices excluding VAT.

The new tools at a glance:

 Specifications GSR 14,4 V-EC
 GSR 18 V-EC
 GSB 14,4 V-EC
 GSB 18 V-EC
 Battery voltage 14.4 V 18 V 14.4 V 18 V
 Battery capacity 4.0 Ah 4.0 Ah 4.0 Ah 4.0 Ah
 Head length 179 mm 179 mm 189 mm 189 mm
 No-load speed
 (1st gear/2nd gear)
 0 - 500/
 1,600 rpm
 0 - 500/
 1,700 rpm
 0 - 500/
 1,600 rpm
 0 - 500/
 1,700 rpm
 Impact rate - - 0 - 24,000 bpm 0 - 25,500 bpm
 Max. torque
 (hard/soft screwdriving
 46/28 Nm 50/31 Nm 46/28 Nm 50/31 Nm
 Max. drilling diameter
 in wood/metal/masonry
 35/13/- mm 38/13/- mm 35/13/13 mm 38/13/13 mm
 Max. screw diameter 8 mm 10 mm 8 mm 10 mm
 Weight (including battery) 1.7 1.9 1.8 1.9

Tags: GSB 18, GSR 18, Motor

The Robert Bosch Power Tools GmbH, a division of the Bosch Group, is one of the world’s leading providers for power tools, power tool accessories and measuring tools. In 2018, its roughly 20,000 associates generated sales of 4.6 billion euros, about 85 percent of which outside of Germany. With brands such as Bosch and Dremel, the division stands for customer focus and great engineering progress. The core success factors are innovative strength and pace of innovation. In 2019, Bosch Power Tools will again launch more than 100 new products onto the German market in its four business segments power tools, accessories, measuring tools and garden tools.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 410,000 associates worldwide (as of December 31, 2018). The company generated sales of 78.5 billion euros in 2018. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT company, Bosch offers innovative solutions for smart homes, smart cities, connected mobility, and connected manufacturing. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 460 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. The basis for the company’s future growth is its innovative strength. At nearly 130 locations across the globe, Bosch employs some 68,700 associates in research and development.

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