Sumitomo General Catalog 2025-2026

GSX MILL 2 Flute Endmills Sharp Edge GSX 20000S-4D Type

Recommended Cutting Conditions 1. For stable machining performance use rigid, high-precision machines and holders. 2. Use air blow when dry machining. 3. Use wet machining for stainless steel, heat-resistant alloy, and titanium alloy applications. 4. If chatter is a problem, reduce the spindle speed and feed rate indicated in the table below by the same ratio, or reduce the depth of cut. 5. This series is not recommended for groove milling. 6. If the machine cannot achieve the recommended spindle speed, please use the maximum spindle speed available.

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DC

Side Milling

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Tempered Steel, Hardened Steel NAK , HPM (35 to 45HRC)

Carbon Steel SC (150 to 250HB)

Alloy Steel SCM (25 to 35HRC)

Work Material Cutting Conditions

Steel for Structure SS

Heat-Resistant Alloy Titanium Alloy

Hardened Steel (45 to 55HRC)

Stainless Steel SUS304,SUS316

Cast Iron FC

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

DC (mm)

7,600 3,850 1,900 1,250

110 150 200 250

7,600 3,850 1,900 1,250

110 150 200 250

6,000 2,950 1,450

80

5,500 2,750 1,350

40 60 80 90 90 95 85 80 70 55

3,800 1,900 1,000

25 30 50 60 60 60 60 45 35 30

4,600 2,300 1,150

35 40 55 60 60 60 60 50 40 30

3,800 1,950 1,000

20 30 35 40 40 40 40 35 30 25

1.0 2.0 4.0 6.0 8.0

7,600 3,850 1,900 1,250

110 150 200 250

100 130

970 140 700 140 190 130 470 130 370 120 300 100

860 670 560 420 340 260 200

640 500 380 330 250 190 150

740 560 460 370 280 220 170

640 490 380 320 250 190 150

930 220 770 210 650 200 450 170 360 140 190 120

930 220 770 210 650 200 450 170 360 140 190 120

930 220 770 210 650 200 450 170 360 140 190 120

10.0 12.0 16.0 20.0 25.0

230

80

2.5DC

2.0DC 0.01DC

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Standard Depth of Cut

Below ø3 : 0.02DC, Above ø3 : 0.05DC

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