Sumitomo General Catalog 2025-2026

GSX MILL 4 Flute Endmills Sharp Edge GSX 400S-3D 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

Flutes

Coat

Side Milling

Groove Finishing

Helix Angle

Fig 1

Fig 2

APMX

APMX

15°

LF

LU

LF

DC

Tolerance

I

D ≤ 3.0

0 -0.015 0 -0.020 0 -0.030

3.0 < D ≤ 12

12.0 < D

Endmill Identification (GSXMILL Series Only)

Body

GSX Inch - Made to Order

Dimensions (inch)

Series Code GSX 4 04 S - 3D

Dia. DC

Cutting Edge Length APMX

Neck Length LU

Overall Length LF

Shank Dia. DMM

Cat. No.

Fig

GSX404S-3D GSX406S-3D GSX408S-3D GSX410S-3D GSX412S-3D GSX414S-3D GSX416S-3D GSX418S-3D GSX420S-3D GSX424S-3D GSX428S-3D GSX432S-3D GSX436S-3D GSX440S-3D GSX444S-3D GSX448S-3D GSX456S-3D GSX464S-3D Grade: ACF20

0.0625 0.1875 0.2269 1.500 0.1250 1 0.0938 0.2813 0.3206 1.500 0.1250 1

Cutting Edge

Cutting Edge Length

Diameter in 64ths (4/64 = 0.0625")

Number of Flutes

0.1250 0.3750

-

2.000 0.1250 2

S: Sharp Edge

0.1563 0.4688 0.5278 2.000 0.1875 1

0.1875 0.5625

-

2.000 0.1875 2

0.2188 0.6564 0.735 2.000 0.2500 1

0.2500 0.7500

-

2.000 0.2500 2

0.2813 0.8439 0.923 3.000 0.3125 1

0.3125 0.9375 0.3750 1.1250 0.4375 1.3125 0.5000 1.5000 0.5625 1.6875 0.6250 1.8750 0.6875 2.0625 0.7500 2.2500 0.8750 2.6250 1.0000 3.0000

- - - - - - - - - -

3.000 0.3125 2 3.500 0.3750 2 3.500 0.4375 2 3.500 0.5000 2 4.500 0.5625 2 4.500 0.6250 2 4.500 0.6875 2 5.000 0.7500 2 5.000 0.8750 2 5.500 1.0000 2

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.

a e

DC

Side 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

DC (inch) Feed Rate (mm/min) < 0.039 18,500 250 18,500 250 18,500 250 17,000 150 11,500 100 8,000 65 9,400 65 8,000 45 < 0.078 9,400 250 9,400 250 9,400 250 8,500 200 6,700 130 4,000 65 4,600 90 4,000 60 < 0.156 4,500 350 4,500 350 4,500 350 4,300 250 3,500 210 2,000 110 2,300 110 2,000 70 < 0.236 3,100 400 3,100 400 3,100 400 2,800 300 2,400 220 1,300 120 1,500 120 1,300 90 < 0.315 2,300 380 2,300 380 2,300 380 2,100 300 1,800 220 950 120 1,100 120 900 90 < 0.393 1,800 350 1,800 350 1,800 350 1,700 300 1,400 220 700 120 900 120 800 90 < 0.472 1,500 350 1,500 350 1,500 350 1,400 300 1,200 220 650 110 750 120 650 90 < 0.630 1,100 300 1,100 300 1,100 300 1,000 240 900 190 480 90 550 100 490 70 < 0.787 900 280 900 280 900 280 850 210 700 170 400 80 440 90 400 60 < 1.000 720 220 720 220 720 220 680 170 560 130 320 60 352 70 320 50 Standard Depth of Cut a p 2.5DC 2.0DC a e Below ø3 : 0.02DC , Above ø3 to Below ø8 : 0.05DC, Above ø8 : 0.07DC 0.01DC 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 )

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

DC (inch) Feed Rate (mm/min) < 0.039 18,500 250 18,500 250 18,500 250 17,000 150 11,500 100 8,000 65 9,400 65 8,000 45 < 0.078 9,400 250 9,400 250 9,400 250 8,500 200 6,700 130 4,000 65 4,600 90 4,000 60 < 0.156 4,500 350 4,500 350 4,500 350 4,300 250 3,500 210 2,000 110 2,300 110 2,000 70 < 0.236 3,100 400 3,100 400 3,100 400 2,800 300 2,400 220 1,300 120 1,500 120 1,300 90 < 0.315 2,300 380 2,300 380 2,300 380 2,100 300 1,800 220 950 120 1,100 120 900 90 < 0.393 1,800 350 1,800 350 1,800 350 1,700 300 1,400 220 700 120 900 120 800 90 < 0.472 1,500 350 1,500 350 1,500 350 1,400 300 1,200 220 650 110 750 120 650 90 < 0.630 1,100 300 1,100 300 1,100 300 1,000 240 900 190 480 90 550 100 490 70 < 0.787 900 280 900 280 900 280 850 210 700 170 400 80 440 90 400 60 < 1.000 720 220 720 220 720 220 680 170 560 130 320 60 352 70 320 50 Standard Depth of Cut a p 1.5DC a e Below 0.02DC 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 )

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