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-RK

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

Product Code	Seat	W	RR	T
NG4M550RK KC5025 »	4	5.50	0.57	6.35
NG4M550RK KCU25 »	4	5.50	0.57	6.35
NG4M600RK KCU25 »	4	6.00	0.57	6.35

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
NG4M600LK KC5025 »	4	6.00	0.57	6.35
NG4M600LK KCU25 »	4	6.00	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
NG5250R KC5025 »	5	6.35	0.57	9.52
NG5312R KCU25 »	5	7.93	0.83	9.52
NG5375R KC5025 »	5	9.53	0.83	9.52
NG6281R KC5025 »	6	7.14	0.83	6.35
NG6281R KCU25 »	6	7.14	0.83	6.35
NG6375R KC5025 »	6	9.53	0.83	6.35
NG6375R KCU25 »	6	9.53	0.83	6.35

NG-L

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

Product Code	Seat	W	RR	T
NG5312L KC5025 »	5	7.93	0.83	9.52
NG6375L KC5025 »	6	9.53	0.83	6.35

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

NGP-L

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

Product Code	Seat	W	RR	T
NGP2031L KC5010 »	2	0.79	0.09	1.27
NGP2031L KCU10 »	2	0.79	0.09	1.27
NGP2062L KC5010 »	2	1.58	0.19	2.79
NGP2125L KC5010 »	2	3.18	0.19	2.79
NGP2125L KCU10 »	2	3.18	0.19	2.79
NGP2M150L K313 »	2	1.50	0.19	2.79
NGP2M200L K313 »	2	2.00	0.19	2.79
NGP3088L KC5010 »	3	2.24	0.19	2.39
NGP3125L KC5010 »	3	3.18	0.19	3.81
NGP3156L KC5010 »	3	3.96	0.19	3.81
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
NGP4250L KC5010 »	4	6.35	0.57	6.35
NGP4250L KCU10 »	4	6.35	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
NGP2031R KC5010 »	2	0.79	0.09	1.27
NGP2031R KCU10 »	2	0.79	0.09	1.27
NGP2062R KC5010 »	2	1.58	0.19	2.79
NGP2062R KCU10 »	2	1.58	0.19	2.79
NGP2125R KC5010 »	2	3.18	0.19	2.79
NGP2125R KCU10 »	2	3.18	0.19	2.79
NGP2M150R K313 »	2	1.50	0.19	2.79
NGP3088R KC5010 »	3	2.24	0.19	2.39
NGP3088R KCU10 »	3	2.24	0.19	2.39
NGP3125R KC5010 »	3	3.18	0.19	3.81
NGP3125R KCU10 »	3	3.18	0.19	3.81
NGP3156R KC5010 »	3	3.96	0.19	3.81
NGP3189R KC5010 »	3	4.80	0.57	3.81
NGP4189R KC5010 »	4	4.80	0.57	6.35
NGP4189R KCU10 »	4	4.80	0.57	6.35
NGP4250R KC5010 »	4	6.35	0.57	6.35
NGP4250R KCU10 »	4	6.35	0.57	6.35