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2JJTB / 3JJTBS RPM : rev./min Feed : mm/min

Material Copper / Carbon Steels Prehardened Steels / Hardened Steels Hardened Steels Hardened Steels
Hardness Cu / S45C / S50C NAK / SKD SKD / SKT SKD / SKT

30HRC~45HRC 30HRC~45HRC 45HRC~55HRC 55HRc ~ 68HRc

Effective RPM FEED Ap RPM FEED Ap RPM FEED Ap RPM FEED Ap
Length
Radius 42,000 630 Axial Depth 28,350 Axial Depth Axial Depth Axial Depth
R0.1 1.5 32,550 368 22,575
R0.15 2 34,650 641 0.007 23,310 431 0.005 27,300 326 0.005 27,300 252 0.004
R0.2 2 32,550 494 0.005 22,050 252 0.004 21,000 200 0.003 21,000 179 0.003
R0.25 3 42,000 1,155 0.008 28,350 399 0.006 21,525 336 0.005 21,525 294 0.004
R0.3 3 25,200 525 0.003 17,850 326 0.002 19,950 242 0.002 19,950 189 0.001
6 34,650 1,187 0.016 28,350 788 0.013 26,250 672 0.011 26,250 473 0.008
R0.4 4 21,525 609 0.004 17,850 326 0.003 16,800 294 0.003 16,800 252 0.002
8 43,050 2,142 0.019 31,500 861 0.015 24,675 630 0.013 24,675 609 0.011
R0.5 4 26,775 998 0.006 22,050 431 0.005 15,750 368 0.004 15,750 326 0.003
8 893 0.032 22,575 1,418 0.022 23,625 788 0.021 23,625 704 0.016
R0.75 12 2,625 2,310 0.016 29,400 735 0.013 16,800 515 0.011 16,800 410 0.008
4 43,050 1,365 0.008 18,900 714 0.006 14,700 399 0.005 13,650 336 0.004
R1 8 26,775 1,050 0.037 16,275 1,470 0.028 24,150 861 0.026 24,150 714 0.016
12 26,775 2,100 0.021 17,850 945 0.016 15,750 630 0.016 15,750 578 0.011
R1.5 8 26,250 1,103 0.016 12,600 525 0.013 12,600 462 0.011 12,600 420 0.007
15 17,850 945 0.047 10,500 1,365 0.037 17,850 1,050 0.032 16,800 861 0.026
R2 25 15,750 609 0.023 767 0.019 11,550 683 0.017 11,550 525 0.013
R3 35 2,205 0.014 6,300 683 0.011 567 0.008 462 0.008
R4 10 9,450 1,260 0.008 12,600 399 0.006 9,450 378 0.005 9,450 273 0.004
R5 20 18,900 893 0.063 1,470 0.042 6,300 1,155 0.037 6,300 893 0.032
R6 30 13,650 2,468 0.032 9,450 945 0.021 12,600 735 0.016 12,600 630 0.014
Milling 12 1,470 0.016 7,350 651 0.013 9,450 546 0.011 9,450 504 0.011
Amount 20 9,450 1,260 0.084 11,550 1,785 0.068 7,350 1,428 0.059 7,350 1,124 0.048
30 15,750 1,260 0.063 8,400 1,050 0.053 11,025 1,050 0.047 11,025 924 0.037
40 10,500 2,310 0.047 7,350 840 0.037 9,450 819 0.032 9,450 672 0.026
20 1,890 0.037 7,035 819 0.032 7,350 735 0.026 7,350 609 0.021
30 9,450 1,470 0.095 8,400 1,365 0.074 6,300 1,260 0.063 6,300 1,155 0.053
40 9,450 1,365 0.079 7,350 1,103 0.063 7,350 1,050 0.053 7,350 924 0.044
50 10,500 1,260 0.063 5,250 924 0.053 6,300 840 0.042 6,300 735 0.037
40 9,450 767 0.042 5,250 840 0.032 5,355 788 0.026 5,355 683 0.024
60 7,875 2,205 0.085 3,675 630 0.068 5,355 557 0.053 5,355 525 0.045
29 7,875 1,470 0.063 3,150 473 0.047 3,360 420 0.042 3,360 368 0.033
49 6,300 2,310 0.147 7,350 1,103 0.105 2,940 998 0.084 2,940 893 0.061
33 4,200 1,365 0.074 4,095 735 0.063 6,300 683 0.053 6,300 578 0.042
52 9,450 1,785 0.189 7,350 1,155 0.147 3,570 1,050 0.105 3,570 840 0.086
37 4,725 998 0.095 3,360 683 0.084 6,300 578 0.068 6,300 473 0.042
54 9,345 735 0.194 3,675 893 0.168 3,045 735 0.126 3,045 630 0.084
63 4,515 336 0.093 3,150 504 0.068 3,570 420 0.053 3,570 336 0.034
85 5,775 Ae 0.1D 0.126 2,940 368 0.086 2,940 326 0.063 2,940 231 0.047
Roughing 4,200 0.063 1,995 168 0.032 2,625 158 0.016 2,625 105 0.011
Finishing 3,990 Ae 0.1D 1,575 Ae 0.08D 1,575 Ae 0.06D
2,940

Ae = Vf/n

Depth of Cut Ap Axial Depth
Ae Radial Depth
D Outside Diameter
n Speed
Vf Feed

Recommend air blow or oil mist. When milling copper water soluble or oil is recommended.
These parameters are for reference only. In operation, we recommend fine adjustments to those parameters according to the milling shape,
milling strategy and machine conditions.
Where the parameters exceed the machine's maximum spindle speed, the RPM and feedrate should be reduced proportionally.
The Neck length and Taper angle may also affect the parameters used, depending on the operating conditions.
Remove chips to prevent heat generation and ignition.

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