MMT series

For high precision machining of a wide range of threading applications

M-CLASS INSERTS WITH 3-D CHIP BREAKERS

• Excellent chip control
• Prevents burrs and vibration
• With moulded identification markings for easy thread recognition

AG type is added to the accurate M-class type 3D chipbreaker

For general purpose 60° and 55° inner/outer diameter threading, the AG type has been added to the precision M-class 3D chip breaker range, which is applicable to 48-8 threads and a pitch of 0.5-3.0mm to meet a wide range of needs.
The M-class precision 3D chipbreaker improves chip control and contributes to tool cost reduction.

●IDEAL CHIP CONTROL EVEN IN THE LATTER HALF OF PASSES WHEN CONTINUOUS CHIPS ARE USUALLY PRODUCED. (M-CLASS INSERTS WITH 3-D CHIP BREAKERS)
ISO metric external thread pitch 1.5mm Final pass (6th pass)

G-CLASS GROUND INSERTS

• The MMT series allows the threading of a wide range of threads, from standard metric to threads for pipe couplings, gas and aerospace.

●A HIGHER LEVEL OF PRECISION THAN CONVENTIONAL INSERTS (G-CLASS GROUND INSERTS)

Insert Selection

CHOOSING M-CLASS INSERTS WITH 3-D CHIP BREAKERS OR G-CLASS INSERTS

・For ideal chip control and a high cost performance ratio, M-class inserts with 3-D chip breakers are recommended.
・G-class inserts are recommended where higher precision is required.

HOLDER (Use of special surface treatment)

SUITABLE FOR THREADS WITH A LARGE LEAD ANGLE

PVD coated carbide grade for stable threading

MP9025

Tough grade with an emphasis on cutting edge stability.
Demonstrates excellent fracture resistance when machining at low cutting speeds, internal machining, and even on small corner R sizes.
With excellent adhesion resistance, it is effective in machining heat resistant alloys and precipitation hardening stainless steel.

Cutting Performance

Inconel 718 Comparison of wear by machining length
When threading heat resistant alloys, it suppresses compound damage such as wear and plastic deformation and achieves excellent wear resistance.

VP10MF

High wear and plastic deformation resistance for threading when maintaining an accurate thread form.
Suitable for continuous high precision machining with extensive tool life.
Effective in combination with G-class inserts for high precision threading.

VP15TF

High fracture resistance during low rigidity applications such as bar feed machining. Able to withstand harsh conditions for long periods where conventional inserts would be liable to breakage.
Effective combination of high cost performance M-class inserts with 3-D chip breakers.

VP20RT

Suitable for stainless steel boring and unstable machining where inserts are vulnerable to fracturing.
Effective combination of high cost performance M-class inserts with 3-D chip breakers.

Application Examples