For roughing of steel PH / PX Chipbreaker - Kyocera

For roughing of steel PH / PX Chipbreaker 

Double 

Sided 

PH Chipbreaker 

High efficiency machining of steel 

Single 

Sided 

PX Chipbreaker 

Good stability at high load machining 

Large 

D.O.C 

Small 

PS 

PT 

PH 

PX 

Low Feed Rate High 

Highly-reliable CA55 series for steel machining available

Double Sided Chipbreaker for roughing of steel 

PHChipbreaker 

■ Advantages 

∙Suitable for heavy interrupted cutting and for workpiece with scale due 

to strong cutting edge 

∙Smooth chip control by wide and shallow chipbreaker design 

∙Prevents crater wear by positive land on insert corner 

Positive land on insert corner 

controls crater wear 

Wide land design 

High strength 

■ Stock Items 

Shape Description 

CNMG 120408PH 

120412PH 


Dimension(mm) 

I.C. 

Thickness 

Hole 

12.70 4.76 5.16 


160612PH 15.875 


6.35 6.35 





DNMG 150408PH 



DNMG 150608PH 



SNMG 120408PH 



19.05 6.35 7.94 

12.70 4.76 5.16 

12.70 6.35 5.16 

12.70 4.76 5.16 


15.875 6.35 6.35 





TNMG 160408PH 


TNMG 220408PH 



19.05 6.35 7.94 

9.525 4.76 3.81 

12.70 4.76 5.16 

Corner-R (rε) 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

2.4 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

1.2 

1.6 

1.2 

1.6 

2.4 

0.8 

1.2 

0.8 

1.2 

1.6 

Stock Grades 

CVD Coated Carbide 

CA5505 

CA5515 

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CA5525 

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CA5535 

●:Standard Stock :Check Availability 

Large 

Cutting Load (feed x depth of cut) 

Small 

Application 

Wide land design / Shallow chipbreaker 

Prevents chip clogging at high 

feed cutting 

Smooth chip breaking with wide and 

shallow chipbreaker 

■ Applicable Chipbreaker Range 

D.O.C 

(mm) 

12 

10 

8 

6 

4 

2 

■ How to use PH (double sided) and PX (single sided) 

Continuous 


PH(19 Type) 





∙For large depth of cut 

∙For reducing cutting force 

Light interruption Interruption 

(Steel) 

0.2 0.4 0.6 0.8 1.0 

Feed Rate (mm/rev) 


∙For interrupted cutting / 

workpiece with scale 

∙For high feed rate

Single sided Chipbreaker for roughing of steel 

PXChipbreake 

■ Advantages 

∙Low cutting force by curved cutting edge design 

∙Prevents crater wear by positive land on insert corner 

∙Prevents adhesion by 2-steps dots and reduces load on dots 

■ Stock Items 

2-step dots 

Chip breaking while 

preventing adhesion 

0.37 

5° 

22° 

Shape Description 

CNMM 120408PX 

120412PX 









DNMM 150408PX 



DNMM 150608PX 



SNMM 120408PX 








TNMM 160408PX 


TNMM 220408PX 



Positive land on insert corner 

Cutting force reduction at the point of first 

contact and controls crater wear 

Dimension(mm) 

I.C. 

Thickness 

Hole 

12.70 4.76 5.16 

15.875 6.35 6.35 

19.05 6.35 7.94 

12.70 4.76 5.16 

12.70 6.35 5.16 

12.70 4.76 5.16 

15.875 6.35 6.35 

19.05 6.35 7.94 

9.525 4.76 3.81 

12.70 4.76 5.16 

Corner-R (rε) 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

2.4 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

0.8 

1.2 

1.6 

1.2 

1.6 

1.2 

1.6 

2.4 

0.8 

1.2 

0.8 

1.2 

1.6 

Stock Grades 

CVD Coated Carbide 

CA5505 

CA5515 

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CA5525 

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CA5535 

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●:Standard Stock 

0.34 

0° 

22° 

Curved edge 

Cutting force reduction at 

large ap 

CNMM190616PX 

Wide land and large rake angle 

Good balance of sharpness 

and cutting edge strength 

■ Applicable Chipbreaker Range 

D.O.C 

(mm) 

12 

10 

8 

6 

4 

2 

PX(19 Type) 



(Steel) 

0.2 0.4 0.6 0.8 1.0 

Feed Rate (mm/rev) 

CNMM 

Chip by 100-degree corner 

(CNMM type) 

SCM415 

CNMM190616PX, Vc=120m/min 

ap=5mm, f=0.5mm/rev, WET 

■Chip control of CNMM type 

(100-degree corner) 

Chip control has been improved by large 

dots on chipbreaker when using 100-degree 

corner of CNMM type.

Chipbreaker for roughing of steel 

PH/PXChipbreaker 

■Case Studies 

∙Bearing 

∙Vc=130m/min 

∙ap=5~6mm 

∙f=0.5mm/rev 

∙WET 

∙CNMG190616PH 

(CA5525) 


Competitor A 

SUJ3 

ø1000 

Facing(with scale) 

∙PH chipbreaker doubled the number of processed 

workpiece due to double sided design compared 

with the competitor A (single sided). 

∙Shaft 


∙ap=8mm 


∙WET 

∙CNMM190612PX 

(CA5515) 


Competitor C 

16~28pcs/insert 

8~14pcs/insert 

SNCM616 

800 

more than18pcs/edge 

10pcs/edge 

(Evaluation by the user) 

8 

ø150 

With scale 

∙For Comp. C, dots on chipbreaker were worn away 

after processing 10pcs/edge. 

∙PX chipbreaker showed little wear even after 

processing 18pcs/edge and still available for 

further processing. 


∙Connector 

∙Vc=80m/min 

∙ap=10mm(roughing) 

∙ap=3.8mm(finishing) 


∙DRY 

∙CNMG190616PH 

(CA5525) 


Competitor B 

SCM440class 

1pcs/edge 

330 

1.5pcs/edge 

∙PH chipbreaker extended the tool life by 1.5 times 

of the competitor's coated insert B. 

∙Shaft 


∙ap=4mm 


∙WET 

∙CNMM190612PX 

(CA5515) 


Competitor D 

S45C 

2pcs/edge 

1000 

4pcs/edge 

ø500 

ø570 


ø120 20 

With scale 

∙PX chipbreaker showed two times longer tool life 

compared with Comp. D. 


- KYOCERA, Contributing To Advancing Productivity -

For roughing of steel PH / PX Chipbreaker - Kyocera

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