Page 4 of Gun Drills by Stock Precision Tools

single-fluted gun drills type tbe-solid carbide suitable for most of the common materials we are able to manufacture these solid carbide gun drills in the diameter range 1.0 to 7.0 mm with a maximum flute length of 300 mm please use the form on page 16 for special inquiries orders for certain materials a coating is required as the successful application of gun drills with a bright surface finish cannot be guaranteed for coating definitions see page 18 the dimensions required to calculate the length for conventional machine tools head length workpiece driver d1 re-grind ~4xd drilling depth flute length min distance ~6xd total length std collar 15 mm driver length head forms position of supporting strips special head forms on request supporting strips g suitable for all materials but for smaller hole tolerances c suitable for difficult-to-machine materials i e high-alloyed steel 30 ° standard point grinds special point grinds on request 0° 3 35° e Ø 2 4.00 mm 15° Ø 4.01 20 mm 20 ° 12° a 20° ° 15° back taper ratio 1:800 standard dimensions in mm Ø4 30° d 4 dddd 4 4 gun drills 25° 15° ° 35 0 0,3 30° ,5 8 Ø 3,99 12 ° 30 40° 30 °

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