FEATURE Breakthrough at Metabo:
The new SDS-max hammers with brushless technology
• Powerful brushless motors now also in the mains-powered area for quick work progress during demolition and drilling applications
• Extremely long service life of the machines, guaranteed with an uncompromising three year warranty
• Double vibration protection for best protection of health
BRUSHLESS
EXTREME demolition applications require an extreme amount of power. The new SDS-max combination and chipping hammers from Metabo fulfil this requirement with powerful brushless motors and optimised hammer impact mechanisms.
Thanks to this, the Metabo hammers have at present the fastest drill speed and best material removal on the market. However, that is not all: with double vibration protection and an effective dust extraction, the new SDS-max hammers make the difficult applications significantly more comfortable. A six- metre-long cable also ensures maximum freedom on the construction site.
Full speed ahead The new SDS-max combination hammers (KHEV 5, 8 and 11 kilo and the new SDS- max chipping hammers MHEV 5 and 11 kilo class) are all equipped with powerful and robust brushless motors. “Brushless motors have a greater efficiency, a longer service life and require less maintenance,” explained Jörg Stoschus, manager of the competence centre 'building trade' at Metabo. In connection with specially optimised high-performance hammer action systems, the new SDS- max hammers thus have a higher drill speed and a high material removal. The brushless electronics ensure constant working speed when under load. The speed and impact rates can also be
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reduced by the operator depending on the application. Impact mechanisms and motors of the hammers are built in robust die-cast aluminium housings. Therefore they have an even longer service life and are effectively protected against the harsh enviroment that they operate in. The Nürtingen company ensures the service life with an uncompromising three-year warranty that also includes wear and tear parts when purchased before 31 December, 2019.
Always a firm grip “SDS-max hammers are used every day for different drilling and demolition applications. They must do the job in a fast and poweful manner, and not make the already tiring work even more difficult with strong vibrations”, said Stoschus. With the new SDS-max combination hammers KHEV 5-40 BL, 8-45 BL and 11-52 BL, as well as the chipping hammers MHEV 5 BL and 11 BL the vibrations are dampened in two ways: on the one hand, handle and
motor-gear combination are decoupled from each other. On the other hand, an impact absorbing counter-oscillating mass reduces the vibrations.
“This special anti-vibration system effectively counteracts the high forces that are inevitably generated when working with the machines”, explained Stoschus. “Spring-mounted weights reduce the vibrations without having a negative influence on the machine performance. Subsequently, the user is exposed to less intense vibrations and can work for longer with the hammer.“
Effective dust extraction as a system Apart from vibrations there is something else that makes working difficult: dust. Hammer drilling or chiselling in concrete, masonry or stone is generally anything but a clean matter. “An effective dust extraction does not only protect the user’s health, but it is also prescribed in many locations by trade associations or organisations”, said Stoschus.
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