Drilling - Import export

Thread standard: Metric, ISO DIN 13 Type: Combined machine bit tap (core hole drilling and thread tapping) for through holes Application: Combined (core hole drilling and thread tapping) Material of product: HSSG Surface treatment: no For materials: Materials of medium mechanical strength, non ferrous metals and thermoplastics Tensile strength up to: 600 N/mm2 Standard: Factory standard Tolerance: ISO2/6H Combined Bit taps have been designed for drilling, tapping and deburring in one operation using battery-powered screwdriver drills and electric hand drills with right-hand and left-hand rotation, but they are also suitable for thread cutting in a stationary drilling machine. It is possible with this tool to produce through threads up to a maximum threaded depth of 1 x D. They are especially usefull for mounting an dsmall batch production. Take care that the tool and the axis of the hole are exactly aligned and use a suitable cutting oil.

Thread standard: Metric, ISO DIN 13 Type: Combined machine tap (core hole drilling and thread tapping) Application: Combined (core hole drilling and thread tapping) Material of product: HSSE Surface treatment: no For materials: Materials of medium mechanical strength (alloyed and non-alloyed steels up to 600 N/mm², Malleable cast iron, Graphite cast iron, Copper, Brass, Aluminium, Aluminium-magnesium alloys, Zink alloys, Red bronze, Electron metall, Pressure-cast zink) Tensile strength up to: 600 N/mm2 Standard: DIN 357 Tolerance: ISO2/6H Combined machine taps enables the user to produce the tapping drill hole and the through thread in one operation without any tool changing. The tool incorporates a twist drill before the thread-tapping part. It is possible with this tool to produce through threads up to a maximum threaded depth of 2 x D. It is sensible to use this tool on machines possesing an RPM switchover facility for drilling and tapping.

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Bossong anchors are embedded into boreholes made in the masonry to be strengthened through drilling machines with diamond bits, that work only with rotation movement in order to avoid vibration and percussion effects on the masonry. Depending on the type of masonry and on the particular setting of the site drilling works can be done with water or air cooling or with techniques that help to avoid the spread of cooling liquids. The choice of the drilling technique is decisive when works are done in unique and precious settings where painting, ancient plasters and stuccoes are present and have to be saved and preserved. The borehole diameter is designed according to anchors size it is usually about three times the steel bar diameter; the length of the anchor is another parameter to be evaluated for the right choice of the borehole diameter.