B274HX
Recommended Milling Conditions
Side Milling
GR.2 Low-alloyed Steel （ ~24HRC ） Ø1.0~2.5 60~80 Ø3.0~20 80~85
GR.3 Hi-alloyed Steel （ ~30HRC ） Ø1.0~2.5 47~70 Ø3.0~20 70~75
GR.4 Hardened Steel （ 30~38HRC ） Ø1.0~1.5 47~57 Ø1.5~20 57~70
GR.5 Hardened Steel （ 38~48HRC ） Ø1.0~2.5 30~47 Ø3.0~20 50~60
GR.6 Hardened Steel （ 48~56HRC ）
GR.1 Carbon Steel
GR.8 Stainless Stell
GR.9 Cast Iron
GR.15 Titanium
Work Material
Ø1.0~2.5 60~80 Ø3.0~20 80~85
Ø1.0~2.5 55~65 Ø3.0~20 60~70
Ø1.0~2.5 60~80 Ø3.0~20 80~85
Ø1.0~2.5 30~35 Ø3.0~0 35~40
Ø1.0~20 22~30
Vc m/min
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B274HX-1 120,000 240 20,000 240 15,000 215 15,000 215 10,000 85 7,100 40 17,500 250 20,000 240 9,550 136 B274HX-1.5 1.513,500 245 13,500 245 12,000 215 12,000 215 8,000 90 5,100 50 11,600 250 13,500 245 6,366 115 B274HX-2 213,000 300 13,000 300 11,000 280 11,000 280 7,000 110 3,900 60 8,750 263 13,000 300 4,775 122 B274HX-2.5 2.510,000 320 10,000 320 9,000 300 9,000 300 6,000 120 3,000 60 7,000 275 10,000 320 3,820 127 B274HX-3 3 8,800 500 8,800 500 7,200 350 7,200 350 5,300 125 2,700 60 6,370 361 8,800 500 3,714 181 B274HX-4 4 6,600 530 6,600 530 5,500 360 5,500 360 4,200 130 2,200 70 4,770 365 6,600 530 2,785 182 B274HX-5 5 5,300 600 5,300 600 4,350 420 4,350 420 3,500 140 1,900 75 3,800 430 5,300 600 2,228 215 B274HX-6 6 4,500 610 4,500 610 3,700 425 3,700 425 2,900 145 1,500 70 3,185 426 4,500 610 1,857 213 B274HX-8 8 3,300 590 3,300 590 2,700 425 2,700 425 2,200 145 1,100 65 2,390 438 3,300 590 1,392 219 B274HX-10 102,600 580 2,600 580 2,200 420 2,200 420 1,700 145 950 65 1,910 425 2,600 580 1,114 213 B274HX-12 122,200 580 2,200 580 1,800 420 1,800 420 1,400 140 800 60 1,590 433 2,200 580 928 216 B274HX-16 161,600 530 1,600 530 1,300 400 1,300 400 1,200 130 600 45 1,195 428 1,600 530 696 214 B274HX-20 201,300 510 1,300 510 1,100 370 1,100 370 890 110 470 35 955 374 1,300 510 557 187
ap:1.0D ap:1.0D ap:1.0D ap:1.0D ap:1.0D ap:1.0D ap:1.0D ap:1.0D ap:1.0D
（ mm ）
ae:0.05D ae:0.05D ae:0.05D ae: 0.05D ae:0.05D ae:0.02D ae: 0.05D ae: 0.05D ae: 0.05D
High feed cutting
GR.2 Low-alloyed Steel （ ~24HRC ） Ø1.0~2.5 60~80 Ø3.0~20 80~85
GR.3 Hi-alloyed Steel （ ~30HRC ） Ø1.0~2.5 47~70 Ø3.0~20 70~75
GR.4 Hardened Steel （ 30~38HRC ） Ø1.0~1.5 47~57 Ø1.5~20 57~70
GR.5 Hardened Steel （ 38~48HRC ） Ø1.0~2.5 30~47 Ø3.0~20 50~60
GR.6 Hardened Steel （ 48~56HRC ）
GR.1 Carbon Steel
GR.8 Stainless Stell
GR.9 Cast Iron
GR.15 Titanium
Work Material
Ø1.0~2.5 60~80 Ø3.0~20 80~85
Ø1.0~2.5 80~100 Ø3.0~20 130~150
Ø1.0~2.5 60~80 Ø3.0~20 80~85
Ø1.0~2.5 60~80 Ø3~20 80~85
Ø1.0~20 22~30
Vc m/min
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
RPM (min-1)
Feed (mm/min)
Code No.
Dc
B274HX-1 1 32,000 1,280 32,000 1,280 26,000 1,040 26,000 1,040 20,000 800 20,000 800 25,400 1,016 32,000 1,280 19,100 760 B274HX-1.5 1.522,000 1,760 22,000 1,760 17,000 1,360 17,000 1,360 13,000 1,040 13,000 1,040 16,800 1,344 22,000 1,760 12,732 1,018 B274HX-2 2 16,000 1,920 16,000 1,920 14,000 1,680 14,000 1,680 10,000 1,200 10,000 1,200 12,700 1,524 16,000 1,920 9,550 1,146 B274HX-2.5 2.514,000 2,240 14,000 2,240 12,000 1,920 12,000 1,920 9,000 1,440 9,000 1,440 10,185 1,629 14,000 2,240 7,640 1,222 B274HX-3 3 13,000 2,600 13,000 2,600 10,500 2,100 10,500 2,100 8,500 1,700 8,500 1,700 13,793 2,758 13,000 2,600 8,488 1,698 B274HX-4 4 12,000 2,880 12,000 2,880 10,000 2,400 10,000 2,400 8,500 2,040 8,500 2,040 10,345 2,482 12,000 2,880 6,366 1,528 B274HX-5 5 9,500 2,660 9,500 2,660 8,500 2,380 8,500 2,380 7,000 1,960 7,000 1,960 8,276 2,317 9,500 2,660 5,093 1,426 B274HX-6 6 8,000 2,560 8,000 2,560 7,500 2,400 7,500 2,400 6,500 2,080 6,500 2,080 6,897 2,207 8,000 2,560 4,244 1,358 B274HX-8 8 6,500 2,340 6,500 2,340 5,500 1,980 5,500 1,980 5,500 1,760 5,500 1,760 5,173 1,862 6,500 2,340 3,183 1,145 B274HX-10 10 5,500 2,200 5,500 2,200 4,800 1,920 4,800 1,920 4,000 1,440 4,000 1,440 4,138 1,655 5,500 2,200 2,546 1,018 B274HX-12 12 5,000 2,200 5,000 2,200 4,000 1,760 4,000 1,760 3,500 1,400 3,500 1,400 3,448 1,517 5,000 2,200 2,122 934 B274HX-16 16 4,000 1,920 4,000 1,920 3,000 1,440 3,000 1,440 2,500 1,000 2,500 1,000 2,586 1,241 4,000 1,920 1,592 764 B274HX-20 20 3,000 1,560 3,000 1,560 2,400 1,248 2,400 1,248 2,000 800 2,000 800 2,069 1,075 3,000 1,560 1,273 662
ap:0.3×R ap:0.3×R ap:0.3×R ap:0.3×R ap:0.2×R ap:0.1×R ap:0.3×R ap:0.3×R ap:0.3×R
（ mm ）
ae:0.3×D ae:0.3×D ae:0.3×D ae:0.3×D ae:0.3×D ae:0.3×D ae:0.3×D ae:0.3×D ae:0.3×D
Ae
1. Please work with good rigidity / high precision facilities and collet chuck. 2. Please choose proper cutting fluid.
3. The cutting data is reference value only. Please adjust it according to your real working conditions. 4. If RPM is lower the reference value, the Feed rate (fz) and RPM should be reduced by the same proportion. 5. If vibration occurs during cutting, please reduce cutting parameter.
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