Sparks Electrical News May 2017

CONTRACTORS’ CORNER

10

POWERFUL DEMOLITIONS HAMMER FROM BOSCH

B osch has launched a powerful electric breaker for demolition work in concrete, stone, or asphalt. The Bosch GSH 27 VC Professional has impact energy of 62 joules, with an average material removal rate of 3.2 tons an hour, a 50% increase over the previous model. An- other advantage of the breaker is its low vibration of 8 m/s 2 , owing to the vibration-reduced hammer mechanism and decoupled handles. This means the permitted trigger time of the tool is more than three hours per working day. “All these benefits provide professional tradespeople with fast work progress, and more comfortable working conditions, with reduced

SMOOTH SPEED REGULATION

vibration, even in the toughest applications,” says Campbell Mhodi, Bosch Professional Power Tools senior brand manager. Durability and superior lifespan are guaranteed thanks to the robust construction, which uses high-quality aluminium and steel components. A new feature is the anti-slip surface on the housing cover, which means the 27 kg breaker can be propped up against a wall conveniently and safely, or against suitable objects between operations, without any danger of falling over.

EASY WITH HENGSTLER

Enquiries: +27 (0)11 651 9600

Powerful electric breaker from Bosch.

T he new Hengstler Acuro® AX73 is a class leading optical encoder that offers smooth speed regulation with high levels of precision. Its compact dimensions make it suitable for installation in areas where there are space constraints. Available from the official Hengstler distributor for southern Africa, Countapulse Controls, this absolute rotary encoder is ideal for ATEX-rated applications. The Acuro® AX73 encoder carries ATEX and IEC Ex certification for gas and dust explosion proof requirements. The advanced optical encoder offers benefits for myriad applications including on winches, cranes, drill and other oil and gas industry equipment, as well as in paint plants, petrochemical facilities, bottling plants and grain mills. The connection configuration on the encoder allows the routing of cabling with the encoder installation in separate steps. This provides significant cost and time savings during installation, as cabling can be completed in advance. This type of installation also allows the quick replacement of a spare encoder during maintenance and servicing activities. Another feature that facilitates ease of maintenance is the use of just two screws for the connection hood. Many comparable encoders use six or even eight screws, while insufficient corrosion protection makes such units difficult to uninstall. Special patented screws are used to protect the unit against dust, water and corrosion. The optical scanning system provides a highly accurate 22-bit resolution sensor signal for wherever precision or smooth speed regulation is necessary. Despite this high level of accuracy, the encoder itself is robustly designed with excellent resistance to shock, vibration and external magnetic fields. The stainless steel housing is rated to IP 67 protection and can operate in Ex-related ambient temperatures from −40 to +70 °C. With a housing diameter of only 76 mm, the encoder is ideal for use where space is limited. The encoder can be ordered with SSI, BiSS-B, BiSS-C and Profibus interfaces. Johannesburg-based, Countapulse Controls has an in-depth understanding of the application of absolute rotary encoders and is able to assist the market in selection of the best fit solution for a given application. The new Hengstler Acuro® AX73 is a class leading optical encoder that offers smooth speed regulation with high levels of precision

Enquiries: +27 (0)11 615 7556

SPARKS ELECTRICAL NEWS

MAY 2017