Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools JIS ⑥ Roll Tap Series Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk JIS ① SC-TL-RZ Torqueless Roll Taps with Short Chamfer ② Specification Coating <1.5D 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 ④ (m/min) (m/min) (m/min) (m/min) (m/min) (m/min) Product Features ●High quality internal threading with fewer burrs can be produced with better tool life. ●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 · ⑥ Aluminum casting · Aluminum die casting Tapping Data 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 ⑧ Tapping Fluid Water soluble cutting fluid(10 to 1 dilution) 50 44 0 SC-TL-RZ Conventional product SC-TL-RZ Conventional Product ⑨ After tapping After tapping7,000 holes.2,800 holes. Torque     Thrust ⑩ Compared with conventional products the SC-TL-RZ has less damage after tapping 7,000 holes ⑪ JIS ⑥-57