
Materials Grades No. of teeth 2N No. of teeth 2N
| ℓ | ap | n | Vf | ℓ | ap | n | Vf | |||
| (mm) | (mm) | (min-1) | (mm/min) | (mm) | (mm) | (min-1) | (mm/min) | |||
| Carbon steel | 70 | 0.6 | 3,580 | 2,140 | 70 | 0.7 | 2,860 | 1,430 |
S50C, S55C
JC5040 120 0.5 3.180 1,590 120 0.5 2,860 1,430
(C50, C55)
| Below 250HB | 160 | 0.3 | 2,980 | 1,490 | 190 | 0.3 | 2,400 | 1,200 | |
| Mold steel | JC5040 | 70 | 0.6 | 3,180 | 1,590 | 70 | 0.7 | 2,550 | 1,150 |
HPM7, PX5, NAK80, P20
JC5015 120 0.5 3,180 1,590 120 0.5 2,550 1,150
(1.2311, P20)
| 30-43HRC | For over 40HRC | 160 | 0.3 | 2,980 | 1,490 | 190 | 0.3 | 2,400 | 1,080 |
| Die steel | 70 | 0.6 | 3,180 | 1,590 | 70 | 0.7 | 2,550 | 1,150 |
SKD61, SKD11
JC5040 120 0.5 3,180 1,590 120 0.5 2,550 1,150
(1.2344, 1.2379)
| Below 255HB | 160 | 0.3 | 2,980 | 1,490 | 190 | 0.3 | 2,400 | 1,080 |
| 70 | 0.6 | 3,180 | 1,590 | 90 | 0.7 | 2,550 | 1,150 |
Stainless steel
SUS304 JC5015 120 0.5 2,980 1,490 120 0.5 2,400 1,080
Below 250HB
| 160 | 0.3 | 2,980 | 1,490 | 190 | 0.3 | 2,400 | 1,080 | |
| Hardened die steel | 70 | 0.4 | 1,400 | 350 | 70 | 0.5 | 1,110 | 280 |
SKD61, SKD11
JC5015 120 0.3 1,200 300 120 0.3 950 240
(1.2344, 1.2379)
| 40-50HRC | 160 | – | – | – | 190 | – | – | – |
| Grey & Nodular | 70 | 0.6 | 2,980 | 1,800 | 70 | 0.7 | 2,400 | 1,440 |
cast iron
JC5015 120 0.5 2,980 1,650 120 0.5 2,400 1,440
FC, FCD (GG, GGG)
| Below 300HB | 160 | 0.3 | 2,500 | 1,380 | 190 | 0.3 | 2,070 | 1,240 |
| 70 | 2.0 | 8,000 | 4,000 | 70 | 2.0 | 6,400 | 3,200 |
Aluminium alloy
FZ15 120 1.5 8,000 3,600 120 1.5 6,400 3,200
50-110HB
160 1.0 6,700 3,000 190 1.0 5,600 2,520
ℓ: Overhung length, ap: Depth of cut, n: Spindle speed, Vf: Feed speed
3) In case of ramping, ramping angle up to 3% is recommended. 4) In case of full slotting, recommend to reduce spindle speed and feed speed by 70% on above table. B143