
② Spiral Fluted Tap Series for through hole Overall length L Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS XSL Spiral Fluted Taps (for blind hole) ① JIS X Series Spiral Fluted Taps, Through Hole Use (with LH Spiral Flutes) Spiral Fluted Taps (for through hole) ② Specification <2D Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels 中炭素鋼 高炭素鋼 10 15 10 15 〜 〜 Hand Taps ( m / min ) ( m / min ) ④ Product Features ●The X series, a next generation high dimensional quality, high rigidity tap to make full use of high performance CNC machining Cemented Carbide Taps centers and the newer high precision tooling is now available. ⑤ ●From the YAMAWA analysis of the machining concept for thread cutting taps that conform to conventional pilot holes and the review of the shape of the taps we have created the optimum flute design. This was formatted from the fundamental viewpoint of "cutting screw threads". The current taps available should have been able to accomplish this function but could not. ●By further improving shank precision and shank circularity for the entire tap, it became possible to create a highly accurate screw thread for high speed machining areas. Roll Taps ⑥ Tapping Data Tapping Conditions [M12×1.75] Workpiece Material SCM440 Special Thread Taps Simple Inspection Tools ⑦ Tapping Speed 25m/min XSL Bored Hole Size φ10.3mm Can Continue Tapping Length 24mm Conventional Wear Machinery Type Vertical machining center (synchronous feed) Product Cutting Fluid Water soluble cutting fluid ( 20 to 1 dilution) Pipe Taps 0 100 200 300 400 500 600 ⑧ (Number of holes processed.) Note: ・Please use this product with a collet chuck or a tapping holder adapted to the DIN 371 standard (For size M12 use the DIN 376 Thread Mills Premium Thread Mills ⑨ standard). ・NT Tool Corporation ... Tap holder for height adjustment type synchro · STM type ・SHOWA TOOL Co., LTD. ... Micron chuck H series ・BIG DAISHOWA SEIKI CO., LTD. ... Mega synchro tapping holder ・NIKKEN KOSAKUSHO WORKS, LTD · Slim chuck ・YUKIWA SEIKO INC. ... Super G1 chuck Dies ⑩ Center Drills Centering Tools ⑪ JIS ②-35