Sumitomo General Catalog 2025-2026

GSX MILL 4 Flute Endmills Sharp Edge GSX 40000S-2D 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.

a e

DC

Side Milling

I

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 ) 22,000 11,500

Feed Rate (mm/min)

Spindle Speed (min -1 ) 22,000 11,500

Feed Rate (mm/min)

Spindle Speed (min -1 ) 22,000 11,500

Feed Rate (mm/min)

Spindle Speed (min -1 ) 19,000 11,000

Feed Rate (mm/min)

Spindle Speed (min -1 ) 13,000

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 ) 11,300

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

DC (mm)

9,500 5,400 2,900 2,000 1,450 1,200 1,000

9,500 5,400 2,900 2,000 1,450 1,200 1,000

1.0 2.0 4.0 6.0 8.0

360 440 560 600 600 600 600 500 460

360 440 560 600 600 600 600 500 460

360 440 560 600 600 600 600 500 460

220 290 370 400 400 400 400 320 290

140 180 230 240 240 240 240

90

90

65 85

7,500 4,000 2,700 2,000 1,600 1,350 1,000

110 150 160 160 160 160

6,500 3,400 2,400 1,800 1,450 1,200

120 160 170 170 170 170

6,000 4,200 3,000 2,500 2,100 1,500 1,200

6,000 4,200 3,000 2,500 2,100 1,500 1,200

6,000 4,200 3,000 2,500 2,100 1,500 1,200

5,800 4,000 2,800 2,350 2,000 1,450 1,150

100 120 120 120 120

10.0 12.0 16.0 20.0 25.0

210 750 130

900 140 750 90

800 200 640 160

600 110

700 120

600 480

75 60

960 370

960 370

960 370

920 230

480

85

560

95

2.0DC

a p a e

Standard Depth of Cut

0.03DC

0.01DC

Groove Finishing

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 ) 22,000 11,500

Feed Rate (mm/min)

Spindle Speed (min -1 ) 22,000 11,500

Feed Rate (mm/min)

Spindle Speed (min -1 ) 22,000 11,500

Feed Rate (mm/min)

Spindle Speed (min -1 ) 19,000 11,000

Feed Rate (mm/min)

Spindle Speed (min -1 ) 13,000

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

Spindle Speed (min -1 ) 11,300

Feed Rate (mm/min)

Spindle Speed (min -1 )

Feed Rate (mm/min)

DC (mm)

9,500 5,400 2,900 2,000 1,450 1,200 1,000

9,500 5,400 2,900 2,000 1,450 1,200 1,000

1.0 2.0 4.0 6.0 8.0

360 440 560 600 600 600 600 500 460

360 440 560 600 600 600 600 500 460

360 440 560 600 600 600 600 500 460

220 290 370 400 400 400 400 320 290

140 180 230 240 240 240 240

90

90

65 85

7,500 4,000 2,700 2,000 1,600 1,350 1,000

6,500 3,400 2,400 1,800 1,450 1,200

110 150 160 160 160 160

120 160 170 170 170 170

6,000 4,200 3,000 2,500 2,100 1,500 1,200

6,000 4,200 3,000 2,500 2,100 1,500 1,200

6,000 4,200 3,000 2,500 2,100 1,500 1,200

5,800 4,000 2,800 2,350 2,000 1,450 1,150

100 120 120 120 120

10.0 12.0 16.0 20.0 25.0

210 750 130

900 140 750 90

800 200 640 160

600 110

700 120

600 480

75 60

960 370

960 370

960 370

920 230

480

85

560

95

1.5DC

a p a e

Standard Depth of Cut

Below 0.02DC

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