1 2 3
ETR 2 Flutes High Speed Cutting Conditions
Work Material (~30HRC)
Carbon Steel、Alloy Steel
S50C、SCM、FC250
AISI 1049、Cast Iron
(30~45HRC)
Alloy Steel、Tool Steel、
SKD61、NAK
Pre-hardened Steel、AISI H13
(45~55HRC)
Hardened Steel
SKD61、SKD11、NAK、STAVAX
AISI H13
Cutting
Speed
250m/min 150m/min 100m/min
Diameter
(mm)
Speed
(min-1)
Feed Rate
(mm/min)
Speed
(min-1)
Feed Rate
(mm/min)
Speed
(min-1)
Feed Rate
(mm/min)
1 40000 800 30000 600 30000 240
2 40000 1600 23800 950 15900 240
3 26500 1590 15900 900 10600 240
4 23800 1590 11900 900 7900 240
5 15900 1590 9600 900 6300 240
6 13200 1590 8000 900 5300 240
8 9900 1290 6000 750 4000 220
10 7900 1100 4800 650 3200 200
12 6600 1000 4000 560 2600 200
Ad Milling Amount
(mm)
Ad=0.05D Ad=0.03D Ad=0.02D
ETR 2 Flutes Cutting Conditions
Work Material (~30HRC)
Carbon Steel、Alloy Steel S50C、SCM、FC250 AISI 1049、Cast Iron
(30~45HRC)
Alloy Steel、Tool Steel、SKD61、NAK Pre-hardened Steel、AISI H13
Austenitic
Stainless Steel

SUS304SUS316
AISI 304AISI 316
(45~55HRC)
Hardened Steel
SKD61、SKD11、NAK、STAVAX
AISI H13
Cutting
Speed
50~100m/min 50~70m/min 30~60m/min 20~40m/min
Diameter
(mm)
Speed
(min-1)
Feed Rate
(mm/min)
Speed
(min-1)
Feed Rate
(mm/min)
Speed
(min-1)
Feed Rate
(mm/min)
Speed
(min-1)
Feed Rate
(mm/min)
Side Milling Slotting Side Milling Slotting Side Milling Slotting Side Milling Slotting
1 20000 120 120 12000 70 70 10000 60 60 8900 30 30
2 11000 180 180 7200 110 110 6000 90 90 4800 45 45
3 8500 200 160 5300 130 100 4400 110 66 3200 55 44
4 7200 360 290 4400 220 180 3000 180 110 2400 67 54
5 6000 380 300 3600 230 180 2400 190 110 1900 70 56
6 5300 420 340 3200 240 190 2200 210 130 1600 75 60
8 4000 450 360 2400 240 190 1600 220 130 1200 65 50
10 3200 390 310 1900 190 150 1300 190 110 1000 65 50
12 2700 330 260 1600 160 130 1000 150 90 800 65 50
1 2 3
 

  STARPOINT INC.      
6F, No. 142, Sec. 1, Kuang Fu Rd., San Chung Dist., New Taipei City, Taiwan http://www.starpoint.com.tw
Tel: 886-2-85110941(Rep.), 886-2-29954139
Fax: 886-2-85121787, 886-2-29954946 E-mail: sapinc@ms35.hinet.net