Sumitomo General Catalog 2025-2026

General-purpose Chipbreaker for M-class Positive Inserts EGU

Steel

Exotic Alloy

Stainless Steel

· Superb versatility handles processes from roughing to finishing. · Stable turning is realised across a range of conditions through

excellent cutting edge sharpness and strength. · Item range covers a wide variety of applications. ¢ Application Range

EGU type

.12

EMU type

.08

B

ESU type

.04

ELU type

0

.004

.008

.012

.016

Feed Rate f (IPR)

Features

Suppresses chip build-up at high feed rates for ideal chip control

Excellent Chip Control Performance

C

Wide chip pocket supports various cutting conditions

Low Cutting Force Suppresses Chatter Protrusion design controls chip ow

D

Improved Fracture Resistance Double rake shape with excellent cutting edge sharpness and hardness p g g p g

R

Corner Part A-A Cross Section

Edge B-B Cross Section

(Inch)

(Inch)

.063

25˚

.006

.008

A

B

15˚

S

A

B

CCMT09T3 SS type

CCMT09T3 SS type

T

Application Examples

Improves turning efficiency by reducing chip entanglement

Strong design realizes 1.5x longer tool life

V

Work Material: Automotive Parts (4120H) Internal Tapered Boring Insert: CPMT322EGU (AC8025P) Cutting Conditions: vc = 660 SFM, f = .008 IPR, ap = .080", Wet

Work Material: Fastening Parts (5015) Internal Boring Insert: CCMT32.52EGU (AC8025P) Cutting Conditions: vc = 620 SFM, f = .010 IPR, ap = .040" Wet

W

ap = .08" (1 pass)

ap = .08" (1 pass)

Chattering Not Applicable

ap = .04" (2 passes)

ap = .04" (2 passes)

EGU type Chipbreaker Competitor's Product

(AC8025P)

Conventional Tool

EGU type Chipbreaker (AC8025P)

B18

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