Sumitomo General Catalog 2025-2026

GSX MILL Endmills (4 Flutes) GSX 400C-1.5D I nch Type

Ti Alloy / Heat Resistant Alloy

Hardened Steel 45 to 55HRC

Hardened Steel 55 to 60HRC

Stainless Steel

General Steel

Carbon Steel

Alloy Steel

Pre-hardened Steel

Tempered Steel/Die Steel

Cast Iron

GSX I nch P roducts are made to order

Corner

Fig 1

Fig 2

Flutes

Coat

Side Milling

Grooving

Groove Finishing

Face Milling

Helical Milling

Ramping

Helix Angle

APMX

APMX

15°

LF

LU

Fig 2.

Fig 1.

LF

DC

Tolerance

D ≤ 3.0

0 -0.015 0 -0.020 0 -0.030

3.0 < D ≤ 12

12.0 < D

Body

GSX Inch - Made to Order

I

Dimensions (inch)

Endmill Identification (GSXMILL Series Only) Series Code GSX 4 04 C - 1.5D

Dia. DC

Cutting Edge Length APMX

Neck Length LU

Overall Length LF

Shank Dia. DMM

Cat. No.

Fig

GSX404C-1.5D GSX406C-1.5D GSX408C-1.5D GSX410C-1.5D GSX412C-1.5D GSX414C-1.5D GSX416C-1.5D GSX418C-1.5D GSX420C-1.5D GSX424C-1.5D GSX428C-1.5D GSX432C-1.5D GSX436C-1.5D GSX440C-1.5D GSX444C-1.5D GSX448C-1.5D GSX456C-1.5D GSX464C-1.5D

1 1 2 1 2 1 2 1 2 2 2 2 2 2 2 2 2 2

0.0625 0.0938 0.1250 0.1563 0.1875 0.2188 0.2500 0.2813 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.6875 0.7500 0.8750 1.0000

0.0938 0.1331 1.500 0.1406 0.1800 1.500

0.1250 0.1250 0.1250 0.1875 0.1875

Cutting Edge

Cutting Edge Length

Diameter in 64ths

Number of Flutes

0.1875

-

2.000

(4/64 = 0.0625")

0.2344 0.2934 2.000

C: Gash Land

0.2813

-

2.000

0.3282 0.407 2.000 0.2500

0.3750

-

2.000 0.2500

0.4220 0.501 2.500

0.3125 0.3125

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 the machine cannot achieve the recommended spindle speed, please use the maximum spindle speed available.

0.4688 0.5625 0.6563 0.7500 0.8438 0.9375 1.0313 1.1250 1.3125 1.5000

- - - - - - - - - -

2.500

3.000 0.3750 3.000 0.4375 3.000 0.5000 3.500 0.5625 3.500 0.6250 4.000 0.6875 4.000 0.7500 4.000 0.8750

4.000

1.0000

a e

DC

Grade: ACF20 Side Milling

Alloy Steel SCM (25 to 35HRC)

Carbon Steel SC (150 to 250HB)

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

Work Material Cutting Conditions

Cast Iron FC

Steel for Structure SS

Hardened Steel (45 to 55HRC)

Stainless Steel SUS304,SUS316

Heat-Resistant Alloy Titanium Alloy

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 (inch)

< 0.039 < 0.078 < 0.156 < 0.236 < 0.315 < 0.393 < 0.472 < 0.630 < 0.787 < 1.000

24,000 470 12,800 570 6,800 730 4,600 780 3,400 780 2,800 780 2,300 780 1,700 650

24,000 470 12,800 570 6,800 730 4,600 780 3,400 780 2,800 780 2,300 780 1,700 650

24,000 470 12,800 570 6,800 730 4,600 780 3,400 780 2,800 780 2,300 780 1,700 650

21,000 290 12,000 380 6,400 490 4,300 520 3,200 520 2,600 520 2,200 520 1,600 420

14,500 180 8,300 230 4,400 300 3,000 320 2,200 320 1,800 320 1,500 320 1,100 280

10,500 120 6,000 150 3,200 200 2,200 210 1,600 210 1,300 210 1,100 210 800 170

12,600 120 7,200 160 3,800 210 2,650 220 2,000 220 1,500 220 1,300 220 1,000 180

10,500

85

6,000 110 3,200 130 2,200 150 1,600 150 1,300 150 1,100 150 800 120

1,350 1,050

600 470

1,350 1,050

600 470

1,350 1,050

600 470

1,300 1,050

380 300

900 720

260 210

650 520

150 120

800 640

160 130

650 520

100

80

1.5DC 0.05DC

1.0DC 0.02DC

a p a e

Standard Depth of Cut

Side Milling (High Speed Machining Centre)

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 (inch)

< 0.039 < 0.078

60,000 1,200 60,000 1,200 60,000 1,200 60,000

850 60,000

720 48,000

500 32,000 300 900 15,900 400

― ―

― ―

47,800 2,200 47,800 2,200 47,800 2,200 47,800 1,600 39,800 1,200 31,800

< 0.156 23,900 2,600 23,900 2,600 23,900 2,600 23,900 1,900 19,900 1,400 15,900 1,100 8,000 490 ― ― < 0.236 16,000 2,700 16,000 2,700 16,000 2,700 16,000 2,000 13,300 1,500 10,600 1,200 5,300 520 ― ― < 0.315 12,000 2,700 12,000 2,700 12,000 2,700 12,000 2,000 10,000 1,500 8,000 1,200 4,000 520 ― ― < 0.393 9,600 2,700 9,600 2,700 9,600 2,700 9,600 2,000 8,000 1,500 6,400 1,200 3,200 520 ― ― < 0.472 8,000 2,700 8,000 2,700 8,000 2,700 8,000 2,000 6,700 1,500 5,300 1,200 2,700 520 ― ― < 0.630 6,000 2,200 6,000 2,200 6,000 2,200 6,000 1,600 5,000 1,200 4,000 900 2,000 450 ― ― < 0.787 4,800 2,000 4,800 2,000 4,800 2,000 4,800 1,400 4,000 1,100 3,200 750 1,600 380 ― ― < 1.000 3,800 1,500 3,800 1,500 3,800 1,500 3,800 1,150 3,200 850 2,600 600 1,300 300 ― ― Standard Depth of Cut a p 1.5DC 1.0DC ― a e 0.05DC 0.02DC ― Groove Milling

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 (inch)

< 0.039 < 0.078 < 0.156 < 0.236 < 0.315 < 0.393 < 0.472 < 0.630 < 0.787 < 1.000

24,000 380 12,800 460 6,800 580 4,600 620 3,400 620 2,800 620 2,300 620 1,700 520

24,000 470 12,800 570 6,800 730 4,600 780 3,400 780 2,800 780 2,300 780 1,700 560

24,000 470 12,800 570 6,800 730 4,600 780 3,400 780 2,800 780 2,300 780 1,700 560

21,000 290 12,000 380 5,400 490 4,300 520 3,200 520 2,600 520 2,200 520 1,600 420

14,500 180 8,300 230 4,400 300 3,000 320 2,200 320 1,800 320 1,500 320 1,100 280

10,500 120 6,000 150 3,200 200 2,200 210 1,600 210 1,300 210 1,100 210 800 170

12,600

85

5,200 30 3,000 40 1,600 55 1,100 65 800 65 650 65 550 65 400 55

7,200 110 3,800 130 2,650 160 2,000 160 1,600 160 1,300 160 1,000 130

1,350 1,080

480 384

1,350 1,080

600 480

1,350 1,080

600 480

1,300 1,040

380 304

900 720

260 208

650 520

150 120

800 640

110

320 256

50 40

88

I 34

Standard Depth of Cut

0.2DC

0.5DC

0.2DC

0.05DC

0.2DC

a p

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