Общий каталог Yamawa 2022 - 2023 - страница 556

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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 ⑤ Cemented Carbide Tap Series Overall Thread Shank Size of Length oflengthlengthdia.squaresquareLℓDsKℓk JIS ① EH-CT Carbide Taps for Hard Materials ② Specification Coating <1.5D ③ Recommended Tapping Speeds depending on Materials Thermal refined steels 調質鋼 〜5 ④ (m/min)45〜55HRC Product Features ●Ideal for high hardness steel tapping from 45 to 55 HRC. For hot mold SKS 3 and SKD 11. ●The ultra fine grain cemented carbide is superior in abrasion resistance and impact resistance. ●Better concentricity improves the accuracy of the entire tap and roundness of the shank. ⑤ ●Recommended tapping length is "Major diameter size x 1.5" or less 5P chamfer for better tool life.●For the bored hole diameter, the maximum minor diameter of a 6H internal thread diameter maximum value is recommended. Tapping Data [ M8×1.25 ] ⑥ Tapping Data 〈Torque line in the different bored hole size〉Bored Hole Size 6.8mm(Actual 6.79mm) 6.9mm(Actual 6.89mm) EH-CT still Thread Engagement Ratio 89％ 81％ running 1000 1000900torque（Ｎ・㎝）900 800700 thrus（t Ｎ） 800700 Previous Breakage 600 600500500 （Carbide tap） Beginning 400300 400300 200 200 0 50 100 150 200 250 300 350 400 (holes) 1000 1000 ⑦ -100 0 2 4 6 8 10 12 -100 0 2 4 6 8 10 12WorkTypeEMHa-CteTrialHardnessETHa-pCpTing SpeedHot forged die stee（l SKD61） still50HRCstillrunning6m/minrunningTorque-200-200andTorque(average) 770N.cmTorque(average)680N.cm10001000Thrust Lines900900800800 （PFCreeaveribodiudse tap） BreFauklal griegidPTreavpiopuins g FluidBreNaokna-gweater soluble cutting oil（Carbide tap）050100150200250300350400(holes)050100150200250300350400(holes)After 700 70060060050500400500400Holes300200300200Tapping10001000-100024681012-100024681012 ⑧ EH-CT stillrunning -200 -200Torque(average) 890N.cmTorque(average)780N.cm Tapping condition Previous Breakage Work Material DAC（equivalent to SKD61）50HRC （Carbide tap） Tapping Speed 6m/min 0 50 100 150 200 250 300 350 400 (holes) Feed Rigid ⑨ Work Type Stainless steel for plastic die（SUS420J2） Tapping Fluid Non-water soluble cutting oilMaterialHardness52HRCTapping Speed6m/minBored hole size enlarged by 0.1mm can reduce the tapping resistance Feed Full rigid torque by 10%. Tapping Fluid Non-water soluble cutting oil In tapping the material of high hardness, it is recommendable to make the bored hole size as large as possible. ⑩ Recommended bored hole size (for reference) Applicationunit : mm SLow Tapping Speed Fast Minor Dia. of JIS 6H Class Internal Screw Size Recommended BoredHole Size Thread Workpiece 1m/min 3m/min 5m/min 6m/min 15m/min Workpiece Max. Tolerance Min. Tolerance 60HRC 60HRC M3 × 0.5 2.56 2.599 2.459 High 55HRC UH-CT 55HRC High M4 × 0.7 3.40 3.422 3.242 Hardness hardness Materials 55HRC 55HRC materials ⑪ M5 × 0.8 4.30 4.334 4.134 45HRC EH-CTM6×15.10M8× 1.256.905.1536.9124.9176.647Heat Treated45HRC※Pleaseusefeedrate/Materials25HRCrotation synchronizedEH-HT45HRC45HRCHeat Treated25HRCMaterials M10 × 1.5 8.60 8.676 8.376 Tool Steels SKS・SKD tapping attachments forUH-CT/EH-CT. EH-POAlloy SteelsSCM・SCr SKS・SKD Tool SteelsSCM・SCrAlloy Steels M12 × 1.75 11.4 10.441 10.106 1m/min 3m/min 5m/min 6m/min 15m/min JIS ⑤-23