ボールエンドミルラジアスエンドミルスクエアエンドミル旧商品
Ball End MillsRadius End MillsSquare End MillsConventional Items
0.096 0.096 0.072 0.06 0.04 0.04 0.024 0.02 0.018 0.4 0.272 0.12 0.096 0.078 0.044 0.48 0.336 0.252 0.252 0.144 0.096 0.096 0.064 0.288 0.168 0.072 0.072 0.48 0.384 0.336 0.336 0.192 0.128 0.08 0.08 0.08 0.08 0.42 0.42 0.24 0.16 0.48 0.4 0.336 0.12 0.5 0.6 0.8
1,630 1,470 1,350 1,130 770 730 730 600 510 3,090 3,090 2,020 1,450 1,200 930 3,400 3,400 2,540 2,290 1,590 1,590 1,470 1,030 2,240 1,390 1,390 980 3,300 3,300 3,300 2,290 2,160 1,430 1,430 1,430 1,000 1,000 2,840 2,630 2,370 1,310 3,460 3,030 2,030 1,400 2,600 2,250 1,980
1,020 910 910 910 820 770 770 530 450 2,530 2,530 1,420 1,090 980 770 3,020 3,020 2,260 1,890 1,310 1,310 1,310 1,100 1,830 1,140 1,140 800 2,900 2,900 2,900 2,010 1,630 1,250 1,250 1,250 880 880 2,380 2,210 1,990 1,100 2,840 2,490 1,570 1,180 2,450 2,130 1,840 18,430
18,430 18,430 18,430 13,390 12,600 12,600 11,030 9,450 20,810 20,810 16,230 16,230 14,990 11,100 18,000 18,000 16,800 16,800 14,040 14,040 12,960 9,600 13,410 11,140 11,140 8,250 12,940 12,940 12,940 11,210 10,090 9,320 9,320 9,320 6,900 6,900 9,450 8,780 7,900 7,290 10,130 9,560 7,800 6,480 7,550 6,050 5,050 22,490
20,890 19,280 19,280 15,170 14,280 14,280 12,500 10,710 23,590 23,590 18,400 16,980 16,980 12,580 20,400 20,400 19,040 19,040 15,910 15,910 14,690 10,880 15,190 12,620 12,620 9,350 14,660 14,660 14,660 12,710 11,440 10,560 10,560 10,560 7,820 7,820 10,710 9,950 8,950 8,260 11,480 10,840 8,840 7,340 8,750 7,000 5,850
2,110 1,350 1,250 1,250 930 870 870 720 620 3,800 3,800 2,130 1,640 1,480 1,150 4,100 4,100 3,060 2,760 1,920 1,920 1,770 1,240 2,750 1,710 1,710 1,200 3,960 3,960 3,960 2,750 2,220 1,710 1,710 1,710 1,200 1,200 3,210 2,980 2,690 1,490 4,250 3,730 2,120 1,590 3,420 3,000 2,600
15,880 15,880 15,880 15,880 14,990 14,110 14,110 10,290 8,820 19,430 19,430 15,150 13,990 13,990 10,360 16,800 16,800 15,680 14,560 12,100 12,100 12,100 10,750 12,510 10,400 10,400 7,700 12,080 12,080 12,080 10,470 9,420 8,690 8,690 8,690 6,440 6,440 8,820 8,190 7,370 6,800 9,450 8,930 7,280 6,050 7,100 5,680 4,720
14,290 14,290 14,290 14,290 13,500 12,700 12,700 9,260 7,940 17,480 17,480 13,640 12,590 12,590 9,320 15,120 15,120 14,110 13,100 10,890 10,890 10,890 9,680 11,260 9,360 9,360 6,930 10,870 10,870 10,870 9,420 8,480 7,820 7,820 7,820 5,800 5,800 7,940 7,370 6,630 6,120 8,510 8,030 6,550 5,440 6,390 5,110 4,250
920 820 820 820 730 690 690 470 410 2,280 2,280 1,280 980 880 690 2,720 2,720 2,030 1,700 1,180 1,180 1,180 990 1,650 1,030 1,030 720 2,610 2,610 2,610 1,810 1,460 1,130 1,130 1,130 790 790 2,140 1,990 1,790 990 2,550 2,240 1,410 1,060 1,850 1,610 1,440
710 640 640 640 570 540 540 370 320 1,820 1,820 1,020 790 710 550 2,180 2,180 1,630 1,360 940 940 940 790 1,320 820 820 580 2,090 2,090 2,090 1,450 1,170 900 900 900 630 630 1,710 1,590 1,430 790 2,040 1,790 1,130 850 1,270 1,030 880 13,500 13,500 13,500 13,500 12,750 12,000 12,000 8,750 7,500 16,610 16,610 12,950 11,960 11,960 8,860 14,360 14,360 13,410 12,450 10,340 10,340 10,340 9,190 10,700 8,890 8,890 6,580 10,320 10,320 10,320 8,950 8,050 7,430 7,430 7,430 5,510 5,510 7,540 7,000 6,300 5,820 8,080 7,630 6,220 5,170 5,750 4,600 3,820 1416
1820 2225 3035 406 1015 2025 308 1013 1620 2530 3515 2535 4510 1316 2025 3035 4045 5020 2530 4012 2030 5024 3036 1
1.25
1.5
1.75
2
2.5
3 4 56
2 2.5
3 3.5
4 5 6 8 10 12
【注意】
①基本的にはDry（エアーブロー）切削を推奨しますが、被削材、加工形状に合わせて、適切なクーラントを使用してください。②この標準切削条件表は切削条件の目安を示すものです。実際の加工では加工形状、目的、使用機械等により条件を調整してください。
③機械の回転数が足りない場合は、回転数と送り速度を同じ比率で下げてください。
※（１）apは被削材グル−プ1での目安を示しています。その他のグループの場合は、上表の切込み比率を目安に調整してください。
※（２）リブ加工や止まり溝など、切りくずがつまりやすい切削の場合、切込み設定は基本切込みに切込み比率をかけて算出した切込み量を、
さらにその80％まで小さくして使用してください。
※（３）aeの設定はap×切込み比率×3〜5倍を目安に調整してください。仕上げ加工を行う場合、理論カスプハイトを計算し設定してください。
【切込み設定例】EPDBEH2020-10-TH3の工具で焼入れ鋼（50HRC）をリブ溝等高線切削する場合、
切込み=0.168（ap）×0.85（焼入れ鋼グループ2の切込み比率）×0.8（閉鎖域の切削）=0.11mm
① Although basically dry (air blow) cutting is recommended, please use appropriate coolant according to the work material and machining shape.
② These Recommended Cutting Conditions indicate only the rule of a thumb for the cutting conditions. In actual machining, the condition should be adjusted according to the machining shape, purpose and the machine type.
③ If the rpm of the machine is low, lower the feed rate also to put the rpm and feed rate in the same ratio.
※(1) ap is shown as the criteria for Group 1 workpieces. For other groups, adjust the cutting depth according to the cutting depth factors in the above table.
※(2) When performing cutting where cutting chips may cause clogging, such as for rib cutting, blind grooves, etc., cutting depth setting should be set by multiplying a cutting depth factor to calculate the cutting depth amount, and this amount should then be reduced to 80% of the calculated value.
※(3) Adjust by setting ae to (3 to 5)×(ap)×(cutting depth ratio). When performing finishing processing, calculate the theoretical cusp height and set accordingly.
Cutting depth setting example: When cutting rib groove contours in hardened steel (50HRC) using an EPDBEH2020-10-TH3 tool:
【Note】
Cutting depth = 0.168 (ap) × 0.85 (cutting depth factor for Group 2 hardened steel) × 0.8 (for closed-area cutting) = 0.011mm 被削材
Work material
切り込み比率 Ratio to standard depth of cut
プリハードン鋼
Pre-hardened Steels
（35〜45HRC）
Hardened Steels焼入れ鋼
（45〜55HRC）
Hardened Steels焼入れ鋼
（55〜65HRC）
ボール半径R
Ball Radius (mm)
外径Dc Tool dia.
(mm)
ap (mm) 首下長 Under neck
length (mm)
Hardened Steels焼入れ鋼
（68〜72HRC）
100% 85% 80% 65%
Hardened Steels焼入れ鋼
（65〜68HRC）
55%
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
1 2 3 4 5
ボールエンドミルラジアスエンドミルスクエアエンドミル旧商品
エポックディープボール エボリューションハード -TH3
Epoch Deep Ball Evolution Hard -TH3 EPDBEH-TH3
高能率切削条件は45ページを 参照してください。
Please refer to P.45
about high efficiency cutting conditions
被削材 Work material
切り込み比率 Ratio to standard depth of cut
プリハードン鋼
Pre-hardened Steels
（35〜45HRC）
Hardened Steels焼入れ鋼
（45〜55HRC）
Hardened Steels焼入れ鋼
（55〜65HRC）
ボール半径R
Ball Radius (mm)
外径Dc Tool dia.
(mm)
ap (mm) 首下長 Under neck
length (mm)
Hardened Steels焼入れ鋼
（68〜72HRC）
100% 85% 80% 65%
Hardened Steels焼入れ鋼
（65〜68HRC）
55%
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
1 2 3 4 5
0.003 0.002 0.002 0.012 0.012 0.01 0.009 0.006 0.006 0.005 0.004 0.002 0.016 0.014 0.013 0.011 0.01 0.007 0.006 0.005 0.003 0.002 0.034 0.034 0.032 0.027 0.022 0.013 0.009 0.006 0.004 0.003 0.002 0.036 0.032 0.028 0.026 0.024 0.016 0.014 0.006 0.005 0.004 0.003 0.04 0.038 0.034 0.03 0.027 0.023 0.019 0.018 0.016 0.014 0.012 0.006 0.006 0.005 0.004 0.003 0.049 0.027 0.022 0.008 0.08 0.08 0.064 0.06 0.055
200 200 200 270 270 270 270 220 220 220 170 170 380 380 380 380 380 310 310 310 210 210 360 360 360 360 360 290 290 290 290 250 250 540 540 540 440 440 440 440 370 370 370 370 720 720 720 720 720 620 620 580 580 580 580 490 490 490 430 350 810 690 650 520 900 900 900 900 900
190 190 190 210 210 210 210 170 170 170 130 130 340 340 340 340 340 270 270 270 180 180 340 340 340 340 340 270 270 270 270 230 230 480 480 480 390 390 390 390 320 320 320 320 560 560 560 560 560 480 480 450 450 450 450 380 380 380 330 270 660 560 540 420 780 780 780 780 780 50,000
50,000 50,000 45,500 45,500 45,500 45,500 40,500 40,500 40,500 36,000 36,000 45,000 45,000 45,000 45,000 45,000 40,500 40,500 40,500 29,400 29,400 36,000 36,000 36,000 36,000 36,000 32,400 32,400 32,400 32,400 28,800 28,800 30,000 30,000 30,000 27,000 27,000 27,000 27,000 24,000 24,000 24,000 24,000 30,000 30,000 30,000 30,000 30,000 27,000 27,000 27,000 27,000 27,000 27,000 24,000 24,000 24,000 21,000 18,000 30,000 27,000 27,000 24,000 30,000 30,000 30,000 30,000 30,000 50,000
50,000 50,000 50,000 50,000 50,000 50,000 45,900 45,900 45,900 40,800 40,800 50,000 50,000 50,000 50,000 50,000 45,900 45,900 45,900 36,720 36,720 40,800 40,800 40,800 40,800 40,800 36,720 36,720 36,720 36,720 32,640 32,640 34,000 34,000 34,000 30,600 30,600 30,600 30,600 27,200 27,200 27,200 27,200 34,000 34,000 34,000 34,000 34,000 30,600 30,600 30,600 30,600 30,600 30,600 27,200 27,200 27,200 23,800 20,400 34,000 30,600 30,600 27,200 34,000 34,000 34,000 34,000 34,000
230 230 230 330 330 330 330 270 270 270 210 210 450 450 450 450 450 370 370 370 260 260 450 450 450 450 450 360 360 360 360 310 310 610 610 610 500 500 500 500 420 420 420 420 880 880 880 880 880 760 760 720 720 720 720 600 600 600 530 420 980 840 790 630 1,090 1,090 1,090 1,090 1,090
50,000 50,000 50,000 42,000 42,000 42,000 42,000 37,800 37,800 37,800 33,600 33,600 42,000 42,000 42,000 42,000 42,000 37,800 37,800 37,800 26,400 26,400 33,600 33,600 33,600 33,600 33,600 30,240 30,240 30,240 30,240 26,880 26,880 28,000 28,000 28,000 25,200 25,200 25,200 25,200 22,400 22,400 22,400 22,400 28,000 28,000 28,000 28,000 28,000 25,200 25,200 25,200 25,200 25,200 25,200 22,400 22,400 22,400 19,600 16,800 28,000 25,200 25,200 22,400 28,000 28,000 28,000 28,000 28,000
45,000 45,000 45,000 37,800 37,800 37,800 37,800 34,020 34,020 34,020 30,240 30,240 37,800 37,800 37,800 37,800 37,800 34,020 34,020 34,020 23,760 23,760 30,240 30,240 30,240 30,240 30,240 27,220 27,220 27,220 27,220 24,190 24,190 25,200 25,200 25,200 22,680 22,680 22,680 22,680 20,160 20,160 20,160 20,160 25,200 25,200 25,200 25,200 25,200 22,680 22,680 22,680 22,680 22,680 22,680 20,160 20,160 20,160 17,640 15,120 25,200 22,680 22,680 20,160 25,200 25,200 25,200 25,200 25,200
170 170 170 190 190 190 190 150 150 150 120 120 300 300 300 300 300 250 250 250 160 160 300 300 300 300 300 250 250 250 250 210 210 430 430 430 350 350 350 350 290 290 290 290 500 500 500 500 500 430 430 410 410 410 410 340 340 340 300 240 590 510 480 380 710 710 710 710 710
130 130 130 150 150 150 150 120 120 120 90 90 240 240 240 240 240 190 190 190 130 130 240 240 240 240 240 190 190 190 190 160 160 330 330 330 270 270 270 270 230 230 230 230 390 390 390 390 390 340 340 320 320 320 320 270 270 270 230 190 460 400 370 300 550 550 550 550 550 42,500 42,500 42,500 35,700 35,700 35,700 35,700 32,130 32,130 32,130 28,560 28,560 35,700 35,700 35,700 35,700 35,700 32,130 32,130 32,130 22,440 22,440 28,560 28,560 28,560 28,560 28,560 25,700 25,700 25,700 25,700 22,850 22,850 23,800 23,800 23,800 21,420 21,420 21,420 21,420 19,040 19,040 19,040 19,040 23,800 23,800 23,800 23,800 23,800 21,420 21,420 21,420 21,420 21,420 21,420 19,040 19,040 19,040 16,660 14,280 23,800 21,420 21,420 19,040 23,800 23,800 23,800 23,800 23,800 0.20.3
0.50.3 0.50.75 11.25 1.52 2.53 0.50.75 11.25 1.52 2.53 3.54 0.50.75 11.5 22.5 33.5 44.5 51 1.52 2.53 45 5.56 78 11.5 22.5 33.5 44.5 55.5 67 89 1012 24 68 11.5 22.5 3 0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4 0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
高能率切削条件
High efficiency cuttiing conditions
高精度切削条件
High accuracy cuttiing conditions
標準切削条件表
Recommended cutting conditions
Ball End MillsRadius End MillsSquare End MillsConventional Items
【注意】ご使用にあたっては、50ページの表下の項目と注意を参照してください。【Note】Upon usage, please refer to comments and notes below table on page 50.
被削材 Work material
切り込み比率 Ratio to standard depth of cut
プリハードン鋼
Pre-hardened Steels
（35〜45HRC）
Hardened Steels焼入れ鋼
（45〜55HRC）
Hardened Steels焼入れ鋼
（55〜65HRC）
ボール半径R
Ball Radius (mm)
外径Dc Tool dia.
(mm)
ap (mm) 首下長 Under neck
length (mm)
Hardened Steels焼入れ鋼
（68〜72HRC）
100% 85% 80% 65%
Hardened Steels焼入れ鋼
（65〜68HRC）
55%
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
1 2 3 4 5
0.026 0.016 0.008 0.006 0.072 0.046 0.034 0.024 0.09 0.08 0.08 0.08 0.056 0.048 0.032 0.032 0.032 0.024 0.02 0.01 0.009 0.008 0.006 0.005 0.004 0.08 0.056 0.032 0.032 0.02 0.077 0.077 0.064 0.048 0.032 0.028 0.024 0.044 0.028 0.014 0.096 0.096 0.096 0.08 0.08 0.08 0.048 0.048 0.048 0.04 0.015 0.015 0.015 0.088 0.052 0.032 0.016 0.104 0.056 0.036 0.018 0.16 0.16 0.16 0.16 0.16 0.112 0.112 0.064 0.064
730 650 610 610 1,000 1,000 810 720 1,130 1,130 1,130 1,130 1,130 1,130 920 920 920 920 920 770 770 770 770 640 540 1,090 1,090 920 920 920 1,000 1,000 1,000 1,000 950 860 860 980 890 740 1,130 1,130 1,130 1,130 1,130 1,130 920 920 920 770 770 770 770 1,170 950 950 800 1,290 1,040 1,040 880 1,360 1,360 1,360 1,360 1,200 1,200 1,070 960 960
640 560 530 530 890 890 720 640 1,010 1,010 1,010 1,010 1,010 1,010 820 820 820 820 820 690 690 690 690 560 480 970 970 810 810 810 890 890 890 890 810 730 730 880 790 670 980 980 980 980 980 980 790 790 790 670 670 670 670 1,020 830 830 690 1,090 890 890 740 1,180 1,180 1,180 1,180 1,060 1,060 940 850 850 27,000
24,000 24,000 24,000 28,500 28,500 25,650 22,800 27,000 27,000 27,000 27,000 27,000 27,000 24,300 24,300 24,300 24,300 24,300 21,600 21,600 21,600 21,600 18,900 16,200 25,200 25,200 22,950 22,950 22,950 23,080 23,080 23,080 23,080 21,600 21,600 21,600 18,900 18,900 16,800 21,000 21,000 21,000 21,000 21,000 21,000 18,900 18,900 18,900 16,800 16,800 16,800 16,800 19,500 17,550 17,550 15,600 19,500 17,550 17,550 15,600 15,750 15,750 15,750 15,750 15,750 15,750 15,750 14,180 14,180 30,600
27,200 27,200 27,200 32,300 32,300 29,070 25,840 30,600 30,600 30,600 30,600 30,600 30,600 27,540 27,540 27,540 27,540 27,540 24,480 24,480 24,480 24,480 21,420 18,360 28,560 28,560 26,010 26,010 26,010 26,150 26,150 26,150 26,150 24,480 24,480 24,480 21,420 21,420 19,040 23,800 23,800 23,800 23,800 23,800 23,800 21,420 21,420 21,420 19,040 19,040 19,040 19,040 22,100 19,890 19,890 17,680 22,100 19,890 19,890 17,680 17,850 17,850 17,850 17,850 17,850 17,850 17,850 16,070 16,070
880 780 740 740 1,220 1,220 980 880 1,380 1,380 1,380 1,380 1,380 1,380 1,120 1,120 1,120 1,120 1,120 940 940 940 940 770 660 1,300 1,300 1,090 1,090 1,090 1,210 1,210 1,210 1,210 1,220 1,100 1,100 1,160 1,040 870 1,430 1,430 1,430 1,430 1,430 1,430 1,160 1,160 1,160 970 970 970 970 1,370 1,110 1,110 930 1,550 1,250 1,250 1,050 1,610 1,610 1,610 1,610 1,430 1,430 1,290 1,160 1,160
25,200 22,400 22,400 22,400 26,600 26,600 23,940 21,280 25,200 25,200 25,200 25,200 25,200 25,200 22,680 22,680 22,680 22,680 22,680 20,160 20,160 20,160 20,160 17,640 15,120 23,520 23,520 21,420 21,420 21,420 21,540 21,540 21,540 21,540 20,160 20,160 20,160 17,640 17,640 15,680 19,600 19,600 19,600 19,600 19,600 19,600 17,640 17,640 17,640 15,680 15,680 15,680 15,680 18,200 16,380 16,380 14,560 18,200 16,380 16,380 14,560 14,700 14,700 14,700 14,700 14,700 14,700 14,700 13,230 13,230
22,680 20,160 20,160 20,160 23,940 23,940 21,550 19,150 22,680 22,680 22,680 22,680 22,680 22,680 20,410 20,410 20,410 20,410 20,410 18,140 18,140 18,140 18,140 15,880 13,610 21,170 21,170 19,280 19,280 19,280 19,380 19,380 19,380 19,380 18,140 18,140 18,140 15,880 15,880 14,110 17,640 17,640 17,640 17,640 17,640 17,640 15,880 15,880 15,880 14,110 14,110 14,110 14,110 16,380 14,740 14,740 13,100 16,380 14,740 14,740 13,100 13,230 13,230 13,230 13,230 13,230 13,230 13,230 11,910 11,910
570 510 480 480 800 800 650 580 910 910 910 910 910 910 730 730 730 730 730 620 620 620 620 510 440 870 870 730 730 730 800 800 800 800 730 650 650 790 720 600 880 880 880 880 880 880 720 720 720 600 600 600 600 920 740 740 620 980 800 800 670 1,060 1,060 1,060 1,060 950 950 850 760 760
450 400 370 370 620 620 510 450 710 710 710 710 710 710 570 570 570 570 570 480 480 480 480 400 340 680 680 570 570 570 620 620 620 620 560 510 510 620 560 470 690 690 690 690 690 690 560 560 560 470 470 470 470 710 580 580 490 760 620 620 520 820 820 820 820 740 740 660 590 590 21,420 19,040 19,040 19,040 22,610 22,610 20,350 18,090 21,420 21,420 21,420 21,420 21,420 21,420 19,280 19,280 19,280 19,280 19,280 17,140 17,140 17,140 17,140 14,990 12,850 19,990 19,990 18,210 18,210 18,210 18,310 18,310 18,310 18,310 17,140 17,140 17,140 14,990 14,990 13,330 16,660 16,660 16,660 16,660 16,660 16,660 14,990 14,990 14,990 13,330 13,330 13,330 13,330 15,470 13,920 13,920 12,380 15,470 13,920 13,920 12,380 12,500 12,500 12,500 12,500 12,500 12,500 12,500 11,250 11,250 6 8
10 12 2 4 6 8 1.5 2 2.5 3 4 5 6 7 8 9 10 12 13 14 16 18 20 2 4 6 8 10 2 3 4 6 8 10 12 8 12 16 2 2.5 3 4 5 6 8 10 12 14 16 18 20 8 12 16 20 8 12 16 20 2.5 3 4 5 6 8 10 12 13 0.4
0.45
0.5
0.55
0.6
0.7
0.75
0.8
0.9
1
0.8
0.9
1
1.1
1.2
1.4
1.5
1.6
1.8
2
ボールエンドミルラジアスエンドミルスクエアエンドミル旧商品
エポックディープボール エボリューションハード -TH3
Epoch Deep Ball Evolution Hard -TH3 EPDBEH-TH3
【注意】
①基本的にはDry（エアーブロー）切削を推奨しますが、被削材、加工形状に合わせて、適切なクーラントを使用してください。②この標準切削条件表は切削条件の目安を示すものです。実際の加工では加工形状、目的、使用機械等により条件を調整してください。
③機械の回転数が足りない場合は、回転数と送り速度を同じ比率で下げてください。
※（１）apは被削材グル−プ1での目安を示しています。その他のグループの場合は、上表の切込み比率を目安に調整してください。
※（２）リブ加工や止まり溝など、切りくずがつまりやすい切削の場合、切込み設定は基本切込みに切込み比率をかけて算出した切込み量を、
さらにその80％まで小さくして使用してください。
※（３）aeの設定はap×切込み比率×3〜5倍を目安に調整してください。仕上げ加工を行う場合、理論カスプハイトを計算し設定してください。
【切込み設定例】EPDBEH2020-10-TH3の工具で焼入れ鋼（50HRC）をリブ溝等高線切削する場合、
切込み=0.112（ap）×0.85（焼入れ鋼グループ2の切込み比率）×0.8（閉鎖域の切削）=0.076mm
① Although basically dry (air blow) cutting is recommended, please use appropriate coolant according to the work material and machining shape.
② These Recommended Cutting Conditions indicate only the rule of a thumb for the cutting conditions. In actual machining, the condition should be adjusted according to the machining shape, purpose and the machine type.
③ If the rpm of the machine is low, lower the feed rate also to put the rpm and feed rate in the same ratio.
※(1) ap is shown as the criteria for Group 1 workpieces. For other groups, adjust the cutting depth according to the cutting depth factors in the above table.
※(2) When performing cutting where cutting chips may cause clogging, such as for rib cutting, blind grooves, etc., cutting depth setting should be set by multiplying a cutting depth factor to calculate the cutting depth amount, and this amount should then be reduced to 80% of the calculated value.
※(3) Adjust by setting ae to (3 to 5)×(ap)×(cutting depth ratio). When performing finishing processing, calculate the theoretical cusp height and set accordingly.
Cutting depth setting example: When cutting rib groove contours in hardened steel (50HRC) using an EPDBEH2020-10-TH3 tool:
【Note】
Cutting depth = 0.112 (ap) × 0.85 (cutting depth factor for Group 2 hardened steel) × 0.8 (for closed-area cutting) = 0.076mm 被削材
Work material
切り込み比率 Ratio to standard depth of cut
プリハードン鋼
Pre-hardened Steels
（35〜45HRC）
Hardened Steels焼入れ鋼
（45〜55HRC）
Hardened Steels焼入れ鋼
（55〜65HRC）
ボール半径R
Ball Radius (mm)
外径Dc Tool dia.
(mm)
ap (mm) 首下長 Under neck
length (mm)
Hardened Steels焼入れ鋼
（68〜72HRC）
100% 85% 80% 65%
Hardened Steels焼入れ鋼
（65〜68HRC）
55%
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
回転数n min-1
送り速度vf mm/min
1 2 3 4 5
0.064 0.064 0.048 0.04 0.034 0.028 0.012 0.01 0.008 0.2 0.136 0.08 0.064 0.052 0.035 0.24 0.168 0.168 0.168 0.096 0.064 0.064 0.051 0.192 0.112 0.072 0.058 0.32 0.256 0.224 0.224 0.128 0.128 0.08 0.08 0.064 0.056 0.28 0.28 0.16 0.16 0.48 0.4 0.336 0.12 0.5 0.6 0.8
960 870 870 870 770 730 730 600 510 1,370 1,370 1,110 1,110 1,000 930 1,510 1,510 1,510 1,360 1,230 1,230 1,230 1,030 1,430 1,160 1,160 980 1,470 1,470 1,470 1,470 1,190 1,190 1,190 1,190 1,000 1,000 1,350 1,350 1,220 1,090 1,540 1,350 1,200 970 1,320 1,130 1,000
850 760 760 760 680 640 640 530 450 1,130 1,130 910 910 820 770 1,340 1,340 1,340 1,210 1,090 1,090 1,090 910 1,180 950 950 800 1,290 1,290 1,290 1,290 1,040 1,040 1,040 1,040 880 880 1,130 1,130 1,020 920 1,260 1,110 1,010 820 1,170 1,000 880 14,180
14,180 14,180 14,180 13,390 12,600 12,600 11,030 9,450 13,880 13,880 12,490 12,490 12,490 11,100 12,000 12,000 12,000 12,000 10,800 10,800 10,800 9,600 10,310 9,280 9,280 8,250 8,630 8,630 8,630 8,630 7,760 7,760 7,760 7,760 6,900 6,900 6,750 6,750 6,080 6,080 6,750 6,380 6,000 5,400 5,720 4,510 3,850 16,070
16,070 16,070 16,070 15,170 14,280 14,280 12,500 10,710 15,730 15,730 14,150 14,150 14,150 12,580 13,600 13,600 13,600 13,600 12,240 12,240 12,240 10,880 11,690 10,520 10,520 9,350 9,780 9,780 9,780 9,780 8,800 8,800 8,800 8,800 7,820 7,820 7,650 7,650 6,890 6,890 7,650 7,230 6,800 6,120 6,400 5,100 4,200
1,160 1,040 1,040 1,040 930 870 870 720 620 1,690 1,690 1,370 1,370 1,230 1,150 1,820 1,820 1,820 1,640 1,480 1,480 1,480 1,240 1,760 1,430 1,430 1,200 1,760 1,760 1,760 1,760 1,430 1,430 1,430 1,430 1,200 1,200 1,530 1,530 1,380 1,240 1,890 1,660 1,360 1,100 1,690 1,460 1,240
13,230 13,230 13,230 13,230 12,500 11,760 11,760 10,290 8,820 12,950 12,950 11,660 11,660 11,660 10,360 11,200 11,200 11,200 11,200 10,080 10,080 10,080 8,960 9,630 8,660 8,660 7,700 8,050 8,050 8,050 8,050 7,250 7,250 7,250 7,250 6,440 6,440 6,300 6,300 5,670 5,670 6,300 5,950 5,600 5,040 4,180 3,520 2,640
11,910 11,910 11,910 11,910 11,250 10,580 10,580 9,260 7,940 11,660 11,660 10,490 10,490 10,490 9,320 10,080 10,080 10,080 10,080 9,070 9,070 9,070 8,060 8,660 7,800 7,800 6,930 7,250 7,250 7,250 7,250 6,520 6,520 6,520 6,520 5,800 5,800 5,670 5,670 5,100 5,100 5,670 5,360 5,040 4,540 3,960 3,190 2,640
760 690 690 690 610 580 580 470 410 1,010 1,010 820 820 740 690 1,210 1,210 1,210 1,090 980 980 980 820 1,060 860 860 720 1,160 1,160 1,160 1,160 940 940 940 940 790 790 1,020 1,020 920 830 1,130 990 910 730 870 770 660
590 530 530 530 480 450 450 370 320 810 810 660 660 590 550 970 970 970 870 780 780 780 660 850 680 680 580 930 930 930 930 750 750 750 750 630 630 820 820 740 660 910 800 730 590 700 620 530 11,250 11,250 11,250 11,250 10,620 10,000 10,000 8,750 7,500 11,070 11,070 9,970 9,970 9,970 8,860 9,580 9,580 9,580 9,580 8,620 8,620 8,620 7,660 8,230 7,410 7,410 6,580 6,880 6,880 6,880 6,880 6,190 6,190 6,190 6,190 5,510 5,510 5,390 5,390 4,850 4,850 5,390 5,090 4,790 4,310 3,760 3,030 2,510 1416
1820 2225 3035 406 1015 2025 308 1013 1620 2530 3515 2535 4510 1316 2025 30 3540 4550 2025 3040 1220 3050 2430 36 1
1.25
1.5
1.75
2
2.5
3
45 6
2 2.5
3 3.5
4 5 6 8 10 12
高能率切削条件は45ページを 参照してください。
Please refer to P.45
about high efficiency cutting conditions
高能率切削条件
High efficiency cuttiing conditions
高精度切削条件
High accuracy cuttiing conditions
標準切削条件表
Recommended cutting conditions
Ball End MillsRadius End MillsSquare End MillsConventional Items