Sumitomo General Catalog 2025-2026

• MESL now available as a series, with excellent cutting edge sharpness in light to medium cutting

G-Class Positive 3D Chipbreaer Series for Swiss Lathes MEFF / MESL / MESI

Exotic Alloy Exhibits excellent cutting edge sharpness over a wide range of cutting conditions. Emphasis on high machined surface quality

Steel

Stainless Steel

MESL

1st recommendation for small product machining. Excellent chip evacuation performance over a wide range of cutting conditions Features

MESI

 Features New expanded lineup of chipbreaker series for high-accuracy small product machining of steel, stainless steel, and exotic alloys, supporting various turning needs • Expanded MESI items, well received for their stable high chip evacuation performance • MEFF type now available as a series, focusing on reliable chip control in fine cutting • MESL now available as a series, with excellent cutting edge sharpness in light to medium cutting  Chipbreaker Application Range  Selecting Chipbreakers  Features New expanded lineup of chipbreaker series for high-accuracy small product machining of steel, stainless steel, and exotic alloys, supporting various turning needs  Features New expanded lineup of chipbreaker series for high-accuracy small product machining of steel, stainless steel, and exotic alloys, supporting various turning needs .004 .008 .012 .08 .12 0 Feed Rate f(IPR) MEFM MESI 1st Recommendation MESL MEFF

MEFF Outstanding chip control in fine finishing

Exhibits excellent cutting edge sharpness over a wide range of cutting conditions. Emphasis on high machined surface quality .04

MESL

B

pbreaker Application Range

For long cutting chips in fine finishing conditions • Expanded MESI items, well received for their stable high chip evacuation performance • MEFF type now available as a series, focusing on reliable chip control in fine cutting • MESL now available as a series, with excellent cutting edge sharpness in light to medium cutting • Expanded MESI items, well received for their stable high chip evacuation performance • MEFF type now available as a series, focusing on reliable chip control in fine cutting • MESL now available as a series, with excellent cutting edge sharpness in light to medium cutting For chatter/burrs/ machined surface defects 1st Recommendation

MESL

1st recommendation for small product machining. Excellent chip evacuation performance over a wide range of cutting conditions MESI Main Chipbreaker

.12

MESI 1st Recommendation

MESI

.08

MEFM

For chipping in high-feed conditions

.04

MESL 1st recommendation for small product machining. Excellent chip evacuation performance over a wide range of cutting conditions MEFF Sharper Cutting Edge 1st recommendation for small product machining. Excellent chip evacuation performance over a wide range of cutting conditions

MEFM For High-feed Turning

MESI

MEFF

MEFF Outstanding chip control in fine finishing Chip Control Emphasized MESI

.004  Application Examples Inconel 718 Machine Component External Turning .008 Feed Rate f(IPR)

0

.012

304 Stainless Shaft Part External Facing

MESI

MESI

C

Exhibits excellent cutting edge sharpness over a wide range of cutting conditions. Emphasis on high machined surface quality 1st Recommendation MEFF Outstanding chip control in fine finishing MEFF Outstanding chip control in fine finishing Chip control improved and cutting edge adhesion suppressed, eliminating sudden fractures for a long and stable tool life 1.5 times the tool life, along with improved chip control 150

ecting Chipbreakers

MESL

MESI Main Chipbreaker

100

D

0 Exhibits excellent cutting edge sharpness over a wide range of cutting conditions. Emphasis on high machined surface quality MESI Conventional Tool Exhibits excellent cutting edge sharpness over a wide range of cutting conditions. Emphasis on high machined surface quality

For chatter/burrs/ machined surface defects MESL MESL

For long cutting chips in fine finishing conditions

For chipping in high-feed conditions MESI Competitor's Product C

 Chipbreaker Application Range

R

Tool: DCGT32.50.5MESI-AC510U Cutting Conditions: vc= 115 SFM, f= .0031 IPR, ap= .0311” Wet

Tool: DCGT32.51MESI-AC520U Cutting Conditions: vc=330 SFM, f= .0031 IPR, ap= .1968” Wet

Application Examples

MESL  Chipbreaker Application Range  Chipbreaker Application Range

MEFF

MESI 1st Recommendation MESI 1st Recommendation 1st Recommendation MEFM For High-feed Turning

MESL MEFF MESL MESL

.12

Chip Control Emphasized

Sharper Cutting Edge

Steel for Mechanical Structures Header Part External Turning

4115 Steel Valve Part External Turning

MEFF

Drastically improved chip control, productivity 20% improved

.12

Increased productivity through improved chip control .12 MESI

S

No. of Workpieces Produced Without Chip Entanglement Out of 100pcs

After 200 Workpieces

.08

6

.08 .08

MEFM

MEFM MEFM

100

Cutting Power

4

T

Cutting Power

.04

.04 .04

Standby Power

2

50

Standby Power

MEFF MEFF

MEFF

2 inches

.394”

0

MEFF Competitor's Product E

0

V

MEFF Competitor's Product D .004

.012 Standby Power 15% reduced *Estimate based on electric power measurement results during production at Sumitomo facilities .012 .012

0 0

.008 .008

0

.004

.008

MEFF Feed Rate f(IPR)

Competitor's Product E

.004

Feed Rate f(IPR)

Tool: DCGT32.50.5MEFF-AC1030U Cutting Conditions: vc= 265 SFM, f= .0019 IPR, ap= .0029” Wet (Oil-based)

Tool: VCGT220.5MEFF-AC1030U Cutting Conditions: vc= 200 SFM, f= .0011 to .0019 IPR, ap= .0039” Wet (Oil-based)

 Selecting Chipbreakers  Selecting Chipbreakers

 Selecting Chipbreakers

W

1st Recommendation 1st Recommendation

431 Stainless Steel Valve Part External Turning

1045 Steel Sleeve Part Outward Facing

MESL

MESI Main Chipbreaker

MESL

Excellent cutting edge sharpness suppresses wear for 1.8 times longer tool life Machined surface roughness was less than 50% of competitor's 3 MESI Main Chipbreaker

1st Recommendation

Excellent, stable machined surface quality

MESI Main Chipbreaker For long cutting chips in fine finishing conditions For long cutting chips in fine finishing conditions

2

For chatter/burrs/ machined surface defects For chatter/burrs/ machined surface defects

For chipping in high-feed conditions For chipping in high-feed conditions

1

0

MESL Competitor's Product F MESL Sharper Cutting Edge Sharper Cutting Edge MESL

For long cutting chips in fine finishing conditions MEFF Chip Control Emphasized MEFF

For chatter/burrs/ machined surface defects

For chipping in high-feed conditions

MEFM For High-feed Turning MEFM For High-feed Turning

150

50 100

Chip Control Emphasized

0

MESL MESL Competitor's Product F Sharper Cutting Edge

MEFF Chip Control Emphasized

MEFM For High-feed Turning Tool: DCGT32.50.5MESL-AC5025S Cutting Conditions: vc= 300 SFM, f= .0020 IPR, ap= .0039” Wet (Oil-based)

Tool: DCGT21.50.5MESL-AC5025S Cutting Conditions: vc= 900 SFM, f= .0016 IPR, ap= .0098” Wet (Oil-based)

B19

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