Общий каталог Yamawa 2021 - страница 693

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17. Taps for Pipe Threads Intro Comparison of the thread limit of taper pipe tap Unit mm SP LU Basic diameter position LU Basic diameter position LU Basic diameter position SL THL THL THL PO ha : upper deviation ST ha ROLL hd P = 25.4/n n = Number of threads CARBIDE hd : upper deviation Taper hd : lower deviation Axis of tap LONG HAND TAPS Comparison of the thread limit of taper internal pipe taps Unit: mm ISO (Rc) Appendix (PT) Thread Limit Basic major Number of Size Dia. of Threads Thread Basic PT Threads S-PT Thread ha hd Gauge Plane (per inch) Length Diameter Position Thread Basic Diameter Thread Basic Diameter Basic Size Tolerance Basic Size Tolerance EG (STI) Length Position Length Position (mm) (mm) r 7.723 28 14 10.1 - - - - 0.291 0-30 0.291 ±15 e 9.728 28 15 10.1 19 13 16.5 10.5 0.291 0-30 0.291 ±15 w 13.157 19 19 15 28 21 19.5 12.5 0.428 0-40 0.428 ±20 SPECIAL y 16.662 19 21 15.4 28 21 21 14 0.428 0-40 0.428 ±20 THREADS, q 20.955 14 26 20.5 35 25 27 17 0.581 0-50 0.581 ±25 GAUGES t 26.441 14 28 21.8 35 25 29 19 0.581 0-50 0.581 ±25 1 33.249 11 33 26 45 32 35 22 0.740 0-60 0.740 ±30 1w 41.910 11 36 28.3 45 32 37.5 24.5 0.740 0-60 0.740 ±30 THREAD 1q 47.803 11 37 28.3 45 32 38.5 25.5 0.740 0-60 0.740 ±30 MILLS 2 59.614 11 41 32.7 50 35 42.5 27.5 0.740 0-60 0.740 ±30 2q 75.184 11 45 37.1 - - - - 0.740 0-60 0.740 ±30 3 87.884 11 148 40.2 - - - - 0.740 0-70 0.740 ±35 DIES 4 113.030 11 53 46.2 - - - - 0.740 0-70 0.740 ±35 CENTER DRILLS Technical info 694