Kennametal Top Notch Grooving Inserts

Top Notch™ Grooving Tools and Beyond™ Inserts for Your Shallow Groove and Turn Operations

Primary Application

Top Notch Grooving is the proven solution for high productivity. The Top Notch system provides consistent tool performance, accurate indexing, and superior clamping to provide excellent surface finishing and superior tool life.

Features and Benefits

The Beyond PVD coated grades are designed to cut a variety of workpiece materials.
Rigid clamping securely locks insert in place through the toughest cuts.

Versatile design enables one system to handle O.D. and I.D. grooving, face grooving, back turning, undercutting, and even threading operations.
Chip control inserts provide excellent chip evacuation in grooving, and offer better chip control in multidirectional turning.

Click through to the products to see videos of them in action, and also find their related matching tools.

NG-L

General-purpose grooving. O-ring grooving. Circlip grooving. Neutral rake angle.

Product Code	Seat	W	RR	T
NG3189L K313 »	3	4.80	0.57	3.81
NG3189L KC5010 »	3	4.80	0.57	3.81
NG3189L KC5025 »	3	4.80	0.57	3.81
NG3189L KC9110 »	3	4.80	0.57	3.81
NG3189L KCU10 »	3	4.80	0.57	3.81
NG3189L KCU25 »	3	4.80	0.57	3.81
NG3189LEST KD1425 »	3	4.80	0.57	3.81
NG4189L K313 »	4	4.80	0.57	6.35
NG4189L KC5010 »	4	4.80	0.57	6.35
NG4189L KCU10 »	4	4.80	0.57	6.35
NG4189L KCU25 »	4	4.80	0.57	6.35
NG4189LEST KB1630 »	4	4.80	0.57	6.35

NOTE Right hand inserts shown, left hand is mirror image.

NG-LK

Chip control geometry. General-purpose grooving. O-ring grooving. Circlip grooving. Light turning. 10°/Positive rake angle.

Product Code	Seat	W	RR	T
NG3189LK KC5010 »	3	4.80	0.57	3.81
NG3189LK KC5025 »	3	4.80	0.57	3.81
NG3189LK KC9110 »	3	4.80	0.57	3.81
NG3189LK KC9320 »	3	4.80	0.57	3.81
NG3189LK KCU10 »	3	4.80	0.57	3.81
NG3189LK KCU25 »	3	4.80	0.57	3.81
NG4189LK KC5010 »	4	4.80	0.57	6.35
NG4189LK KC5025 »	4	4.80	0.57	6.35
NG4189LK KC9110 »	4	4.80	0.57	6.35
NG4189LK KCU10 »	4	4.80	0.57	6.35
NG4189LK KCU25 »	4	4.80	0.57	6.35

NOTE Right hand inserts shown, left hand is mirror image.

NG-R

General-purpose grooving. O-ring grooving. Circlip grooving. Neutral rake angle.

Product Code	Seat	W	RR	T
NG3189R K313 »	3	4.80	0.57	3.81
NG3189R KC5010 »	3	4.80	0.57	3.81
NG3189R KC5025 »	3	4.80	0.57	3.81
NG3189R KCU10 »	3	4.80	0.57	3.81
NG3189R KCU25 »	3	4.80	0.57	3.81
NG3189REST KD1425 »	3	4.80	0.57	3.81
NG4189R K313 »	4	4.80	0.57	6.35
NG4189R KC5010 »	4	4.80	0.57	6.35
NG4189R KC9110 »	4	4.80	0.57	6.35
NG4189R KCU10 »	4	4.80	0.57	6.35
NG4189R KCU25 »	4	4.80	0.57	6.35
NG4189REST KB1630 »	4	4.80	0.57	6.35

NG-RK

Chip control geometry. General-purpose grooving. O-ring grooving. Circlip grooving. Light turning. 10°/Positive rake angle.

Product Code	Seat	W	RR	T
NG3189RK KC5010 »	3	4.80	0.57	3.81
NG3189RK KC5025 »	3	4.80	0.57	3.81
NG3189RK KC9110 »	3	4.80	0.57	3.81
NG3189RK KC9320 »	3	4.80	0.57	3.81
NG3189RK KCU10 »	3	4.80	0.57	3.81
NG3189RK KCU25 »	3	4.80	0.57	3.81
NG3189RK KT315 »	3	4.80	0.57	3.81
NG4189RK KC5010 »	4	4.80	0.57	6.35
NG4189RK KC5025 »	4	4.80	0.57	6.35
NG4189RK KC9110 »	4	4.80	0.57	6.35
NG4189RK KCU10 »	4	4.80	0.57	6.35
NG4189RK KCU25 »	4	4.80	0.57	6.35

NGD-L

Deep grooving. Neutral rake angle.

Product Code	Seat	W	RR	T
NGD3189L K313 »	3	4.80	0.57	6.35
NGD3189L KC5010 »	3	4.80	0.57	6.35

NOTE Right hand inserts shown, left hand is mirror image.

NGD-LK

Chip control geometry. Deep grooving. Light turning. 10°/Positive rake angle.

Product Code	Seat	W	RR	T
NGD3189LK KC5010 »	3	4.80	0.57	6.35
NGD3189LK KC5025 »	3	4.80	0.57	6.35
NGD3189LK KCU25 »	3	4.80	0.57	6.35
NGD4189LK KC5010 »	4	4.80	0.57	9.53
NGD4189LK KC5025 »	4	4.80	0.57	9.53
NGD4189LK KCU10 »	4	4.80	0.57	9.53
NGD4189LK KCU25 »	4	4.80	0.57	9.53

NOTE Right hand inserts shown, left hand is mirror image.

NGD-R

Deep grooving. Neutral rake angle.

Product Code	Seat	W	RR	T
NGD3189R K313 »	3	4.80	0.57	6.35
NGD3189R KC5010 »	3	4.80	0.57	6.35

NGD-RK

Chip control geometry. Deep grooving. Light turning. 10°/Positive rake angle.

Product Code	Seat	W	RR	T
NGD3189RK KC5010 »	3	4.80	0.57	6.35
NGD3189RK KC5025 »	3	4.80	0.57	6.35
NGD3189RK KCU25 »	3	4.80	0.57	6.35
NGD4189RK K313 »	4	4.80	0.57	9.53
NGD4189RK KC5010 »	4	4.80	0.57	9.53
NGD4189RK KC5025 »	4	4.80	0.57	9.53
NGD4189RK KCU10 »	4	4.80	0.57	9.53
NGD4189RK KCU25 »	4	4.80	0.57	9.53

NGP-L

General-purpose grooving. O-ring grooving. Circlip grooving. 5°/Positive rake angle.

Product Code	Seat	W	RR	T
NGP3189L KC5010 »	3	4.80	0.57	3.81
NGP4189L KC5010 »	4	4.80	0.57	6.35
NGP4189L KCU10 »	4	4.80	0.57	6.35

NOTE Right hand inserts shown, left hand is mirror image.

NGP-R

General-purpose grooving. O-ring grooving. Circlip grooving. 5°/Positive rake angle.

Product Code	Seat	W	RR	T
NGP3189R KC5010 »	3	4.80	0.57	3.81
NGP4189R KC5010 »	4	4.80	0.57	6.35
NGP4189R KC5410 »	4	4.80	0.57	6.35
NGP4189R KCU10 »	4	4.80	0.57	6.35