⑥ Roll Tap Series Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS SC-TL-RZ Spiral Fluted Taps (for blind hole) ① JIS Torqueless Roll Taps with Short Chamfer Spiral Fluted Taps (for through hole) ② Specification <1.5D Coating Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels High carbon steels Stainless steels Aluminum alloy castings Zinc alloy castings 低炭素鋼 中炭素鋼 高炭素鋼 ステンレス鋼 アルミ合金鋳物 亜鉛合金鋳物 15 30 15 30 15 25 10 25 15 30 15 30 〜 〜 〜 〜 〜 〜 Hand Taps ( m / min ) ( m / min ) ( m / min ) ( m / min ) ( m / min ) ( m / min ) ④ Product Features ●High quality internal threading with fewer burrs can be produced with better tool life. Cemented Carbide Taps ●Roll form processing into materials with low ductility ⑤ is now possible. ●Tool life with water soluble cutting fluid is increased. ●The SC-TL-RZ offers high speed processing into: Stainless steel: SUS303, SUS304, SUS316, SUS440C · Alloy steel: SCM420 · Carbon steel: S45C 〜 S50C · Roll Taps Aluminum casting · Aluminum die casting ⑥ Tapping Data Special Thread Taps Simple Inspection Tools ⑦ Processing conditions [M3 × 0.5] (N・㎝) 123 Workpiece Material SCM440/32HRC Bored Hole Size φ2.8 100 Tapping Length 4.5mm 100 Tapping Speed 5m/min Machinery Type Tapping center 55 Pipe Taps Water soluble cutting fluid 44 ⑧ Tapping Fluid 50 (10 to 1 dilution) 0 Conventional product SC-TL-RZ Conventional Product SC-TL-RZ Thread Mills Premium Thread Mills After tapping After tapping ⑨ 7,000 holes. 2,800 holes. Torque Thrust Dies ⑩ Compared with conventional products the SC-TL-RZ has less damage after tapping 7,000 holes Center Drills Centering Tools ⑪ JIS ⑥-57