Общий каталог Yamawa 2022 - 2023 - страница 1208

18. Bar diameter of external threads (for thread rolling dies) Description of products ○NRS-D recommendation for bar diameter ■ for Recommended bar diameters metric external for MS-R-SD Miniature external threads Unit：mm threads Unit : mm Recommended bar Major diameter of external thread size Class recommended bar diameter size diameter Max. Min. Max Min S0.5X0.125 R2 0.410 0.500 0.480 M3×0.5 2.64 2.62 S0.6X0.15 R2 0.495 0.600 0.575 M4×0.7 3.54 3.52 S0.7X0.175 R3 0.570 0.700 0.675 M5×0.8 4.40 4.38 S0.8X0.2 R3 0.655 0.800 0.770 M6×1 S0.9X0.225 R3 0.740 5.30 0.900 5.28 0.870 M8×1.25 The major diameters of external threads 7.07 7.10 are based on the tolerance class 5h3 of JIS B 0201. ■ Recommended bar diameters for RS-D Metric external threads Unit：mm Recommended Major diameter of external thread Recommended Major diameter of external thread ○RS-D size recommendation Class for bar Current bar diameter diameterJIS for metric Old JIS external threads size Class bar diameter Current JIS Old JIS Unit : mm Current JIS Max. Old JISrecommended Min. Max. bar diameter Min. Current JIS Max. Min. Old JIS recommended Max. bar diameter Min. size size R2 0.815 0.815 Max Min R2 2.01 2.01 Max Min ※ M1X0.25 M1×0.25 R3 0.800 0.800 1.000 0.808 0.933 0.985 0.785 0.940 M2.3X0.4 M2.3×0.4 R3 2.00 2.00 1.998 2.281 2.186 2.280 1.968 2.190 M1.1×0.25 R4 0.780 0.780 0.918 0.891 M2.3×0.25 R4 1.98 1.98 2.096 2.071 M1.2×0.25 R1 0.930 0.930 1.007 0.984 M2.5×0.45 R2 2.11 2.11 2.162 2.126 ※ M1.1X0.25 R2 0.915 0.915 1.100 1.033 1.100 1.033 M2.3X0.25 R3 2.09 2.09 2.282 2.215 2.280 2.230 M1.4×0.3 1.168 1.142 M2.5×0.35 2.228 2.196 R3 0.900 0.900 R4 2.07 2.07 M1.6×0.35 1.332 1.300 M2.6×0.45 2.262 2.226 R2 1.015 1.015 R2 2.18 2.18 M1.7×0.35 1.432 1.401 M2.6×0.35 2.318 2.278 M1.2X0.25 R3 0.995 0.995 1.200 1.133 1.185 1.140 M2.5X0.45 R4 2.15 2.15 2.480 2.380 2.480 2.380 M1.8×0.35 1.530 1.498 M3×0.5 2.627 2.589 R4 0.980 0.980 R5 2.13 2.13 M2×0.4 R2 1.180 1.1801.699 1.669 M3×0.35 R2 2.24 2.24 2.718 2.677 M2×0.25 M1.4X0.3 R3 1.165 1.1651.7961.400 1.325 1.771 1.320 1.380 M4×0.5 M2.5X0.35 R3 2.23 2.23 3.607 2.481 2.396 3.561 2.396 2.481 M2.2×0.45 R4 1.150 1.1451.863 1.827 M5×0.5 R4 2.21 2.21 4.606 4.560 R2 1.345 1.345 R2 2.28 2.28 ※ M1.6X0.35 R3 1.330 1.330 1.581 1.496 1.581 1.496 M2.6X0.45 R4 2.25 2.25 2.580 2.480 2.580 2.480 ○MS-RS-D recommendation R4 1.315 1.315 for bar diameter R5 2.23 2.23 for miniature R2 external 1.445 threads 1.450 Unit : mm R2 2.34 2.34 ※ ※ M1.7X0.35 R3 1.430 1.430recommended 1.681 1.596 1.680 bar diameter 1.610 M2.6X0.35 R4 2.31 2.31 2.581 2.496 2.580 2.480 size R4 1.415 Max 1.415 Min R5 2.29 2.29 S0.5×0.125 R2 1.545 0.410 1.545 0.396 R2 2.65 2.65 S0.6×0.15 M1.8X0.35 R3 1.530 0.4941.781 1.530 1.696 0.479 1.696 1.781 M3X0.5 R4 2.62 2.62 2.980 2.874 2.980 2.874 S0.7×0.175 R4 1.515 1.5150.575 0.559 R5 2.60 2.60 S0.8×0.2 R2 1.715 1.7150.658 0.640 R2 2.74 2.74 M2X0.4 R3 1.700 1.700 1.981 1.886 1.980 1.890 M3X0.35 R4 2.71 2.71 2.981 2.896 2.980 2.880 S0.9×0.225 0.741 0.720 R4 1.680 1.680 R5 2.69 2.69 R2 1.810 1.810 R2 3.24 3.24 M2X0.25 R3 1.790 1.795 1.982 1.915 1.980 1.930 M3.5X0.35 R4 3.21 3.21 3.481 3.396 3.480 3.380 R4 1.775 1.775 R5 3.19 3.19 R2 1.88 1.88 R3 3.63 3.63 M2.2X0.45 R3 1.87 1.87 2.180 2.080 2.180 2.080 M4X0.5 R5 3.60 3.59 3.980 3.874 3.970 3.860 R4 1.85 1.85 R6 3.58 3.58 R3 4.63 4.63 R4 4.61 4.61 ■ Recommended bar diameters for N-RSD Metric external threads Unit：mm M5X0.5 4.980 4.874 4.970 4.860 R5 4.59 4.59 Recommended Major diameter of external thread R6 4.58 4.58 size Class bar diameter Current JIS Old JIS Current JIS: Tolerance class 6g (M1.6 or larger), 6h (M1.4 or smaller) Current JIS Old JIS Max. Min. Max. Min. · JIS: Class 2 M3X0.5 R4 2.62 2.62 2.980 2.874 2.980 2.874 · The column of class shows the recommended classes. Information Technical M4X0.7 R4 3.49 3.49 3.978 3.838 3.978 3.838 · Nominal sizes marked with * have been removed from the current JIS. M5X0.8 R5 4.41 4.41 4.976 4.826 4.976 4.826 M6X1 R5 5.28 5.28 5.974 5.794 5.970 5.820 M8X1.25 R6 7.10 7.11 7.972 7.760 7.960 7.790 Current JIS: Tolerance class 6g Old JIS: Class 2 Technical-57