SCI 21-22 General Catalog

Chipbreaker and Grade Selection Guide for Turning Steel Steel

■ Application Guide

*Chipbreaker dimensions in mm

EGU Type Chipbreaker 2.05

1st Recommended Grade

0.25

AC8025P

25°

1st Recommended

Chipbreakers for High-efficiency Machining

Main Chipbreakers Strong Cutting Edge Chipbreakers

EFE Type

ESE Type

ESU Type

ESX Type

1.3

1.40

1.35

1.5

0.2

0.1

Finishing to Shallow Depth of Cut

13°

0.70

15°

A

17 °

20°

5 °

EGE Type

EGU Type

EUX Type

2.0

2.05

2.0 15°

0.25

0.25

0.25

25°

General-purpose

23°

1st Recommended

EME Type

EMX Type

EMU Type

2.3 0.2 0.4

2.5

2.4

0.3

Roughing to Large Depth of Cut

0.3

20 °

20 °

4 °

-15 °

Flank Wear

Crater Wear

Chipping

Breakage

Better Wear Resistance

Better Toughness

AC8015P High-speed Machining

AC8035P Interrupted Machining

EGU Type

EGU Type

2.05

2.05

0.25

0.25

To improve tool life

To improve tool life

25°

25°

EUX Type

EGE Type

2.0

2.0 15°

To improve machining efficiency

To improve machining stability

0.25

0.25

23°

Dimensions in mm

Recommended Cutting Conditions

Steel

(Red text indicates 1st recommendation)

Workpiece Material

Cutting Process

Cutting Conditions

Min. - Max.

Chipbreaker

Grade

Depth of Cut a

Cutting Speed v

f (IPR)

Feed Rate

p (inch)

c (SFM)

Fine Finishing EFB Finishing EFE

.008 - .040 .020 - .060 .040 - .160 .060 - .240 .008 - .040 .020 - .060 .040 - .160 .060 - .240 .008 - .040 .020 - .060 .040 - .160 .060 - .240

.002 - .010 .004 - .016 .008 - .020 .012 - .024 .002 - .010 .004 - .016 .008 - .020 .012 - .024 .002 - .010 .004 - .016 .008 - .020 .012 - .024

330 - 1500 850 - 1600 650 - 1200 450 - 800 330 - 1100 700 - 1400 500 - 850 350 - 600 160 - 900 550 - 1100 400 - 750 300 - 550

T1500Z

AC8015P

Mild Steel (SS400 and others)

EGU AC8025P

Medium

AC8035P

Rough EMU Fine Finishing EFB Finishing EFE

T1500Z

Carbon Steel Alloy Steel (S45C, SCM435, and others)

AC8015P

Medium

EGU AC8025P

AC8035P

Rough EMU Fine Finishing EFB Finishing EFE

T1500Z

Hard Steel Alloy Steel (SCM440H and others)

AC8015P

EGU AC8025P

Medium

AC8035P

Rough EMU

A13

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