Recommended Milling Conditions
General processing
GR.2 Low-alloyed Steel （ ~24HRC ）
GR.3 Hi-alloyed Steel （ ~30HRC ）
GR.4 Hardened Steel （ 30~38HRC ）
GR.5 Hardened Steel （ 38~48HRC ）
GR.1 Carbon Steel
GR.8 Stainless Steel
GR.9 Cast Iron
GR.11 銅 Copper
Work Material
100
100
65
65
55
65
100
100
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)
Code No.
Dc
1 31,500 564 31,500 564 25,000 412 25,000 412 22,000 296 25,000 412 31,500 564 32,000 700 1.526,250 578 26,250 578 20,860 418 20,860 418 14,800 302 20,860 418 26,250 578 25,500 715 2 21,000 582 21,000 582 16,720 425 16,720 425 11,000 310 16,720 425 21,000 582 19,000 730 2.515,750 596 15,750 596 12,580 430 12,580 430 8,900 316 12,580 430 15,750 596 12,700 745 3 10,500 620 10,500 620 8,450 435 8,450 435 7,400 322 8,450 435 10,500 620 12,500 760 4 9,250 630 9,250 630 6,350 442 6,350 442 5,550 342 6,350 442 9,250 630 9,500 765 5 7,950 640 7,950 640 5,095 447 5,095 447 4,460 377 5,095 447 7,950 640 7,650 775 6 5,300 670 5,300 670 4,200 465 4,200 465 3,700 390 4,200 465 5,300 670 6,300 800 8 3,950 790 3,950 790 3,150 555 3,150 555 2,750 455 3,150 555 3,950 790 4,750 950 10 3,150 745 3,150 745 2,500 525 2,500 525 2,200 430 2,500 525 3,150 745 3,800 890 12 2,650 700 2,650 700 2,100 490 2,100 490 1,850 430 2,100 490 2,650 700 3,170 840 16 1,990 525 1,990 525 1,580 370 1,580 370 1,390 325 1,580 370 1,990 525 2,400 630 20 1,590 420 1,590 420 1,260 290 1,260 290 1,110 260 1,260 290 1,590 420 1,900 500
S208FN S210FN
ap:0.1D ap:0.1D ap:0.1D ap:0.1D ap:0.1D ap:0.1D ap:0.1D ap:0.1D
（ mm ）
ae:0.2D ae:0.2D ae:0.2D ae:0.2D ae:0.1D ae:0.1D ae:0.2D ae:0.2D
High-speed machining
GR.2 Low-alloyed Steel （ ~24HRC ）
GR.3 Hi-alloyed Steel （ ~30HRC ）
GR.4 Hardened Steel （ 30~38HRC ）
GR.5 Hardened Steel （ 38~48HRC ）
GR.6 Hardened Steel （ 48 ～ 56HRC ）
GR.7 Hardened Steel （ 56 ～ 68HRC ）
GR.1 Carbon Steel
Work Material
220
220
190
180
170
140
120
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)
Code No.
Dc
1 50,000 2,800 50,000 2,800 50,000 2,800 50,000 2,500 47,500 2,200 32,000 1,400 25,000 1,000 1.5 41,800 2,800 41,800 2,800 33,000 2,800 30,000 2,500 26,500 2,200 24,000 1,400 19,500 1,000 2 31,500 3,500 31,500 3,500 25,000 2,800 24,500 2,500 23,500 2,250 17,000 1,500 12,500 1,000 2.5 41,800 3,500 41,800 3,500 21,000 2,800 20,000 25,000 19,500 2,200 14,000 1,500 10,000 950 3 21,000 3,500 21,000 3,500 16,500 2,800 16,000 2,500 15,500 2,200 11,000 1,500 8,400 950 4 18,000 3,700 18,000 3,700 15,500 3,200 15,000 2,700 13,500 2,400 11,000 1,900 7,900 1,000 5 15,500 4,000 15,500 4,000 15,000 4,000 14,000 2,800 11,000 2,300 10,000 2,000 7,600 1,200 6 15,000 4,800 15,000 4,800 13,500 4,300 11,500 2,700 9,500 2,200 9,500 2,200 6,600 1,050 8 11,500 3,600 11,500 3,600 10,000 3,200 8,900 2,000 7,100 1,700 7,100 1,700 4,900 880 10 9,500 3,000 9,500 3,000 8,200 2,500 7,100 1,700 5,700 1,300 5,700 1,300 3,900 700 12 7,900 2,450 7,900 2,450 6,800 2,100 5,900 1,350 4,700 1,000 4,700 1,000 3,300 580 16 5,900 1,800 5,900 1,800 5,000 1,500 4,500 1,000 3,500 800 3,500 800 2,450 400 20 4,700 1,300 4,700 1,300 4,000 1,200 3,500 800 2,800 650 2,800 650 2,000 320
S618TX S618AX S620TX S620AX
ap:0.02D ap:0.02D ap:0.02D ap:0.02D ap:0.02D ap:0.02D ap:0.02D
（ mm ）
ae:0.02D ae:0.02D ae:0.02D ae:0.02D ae:0.02D
ae:0.02D ae:0.02D
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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