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
NG3047RK KC9110 »	3	1.19	0.19	1.91
NG3062RK KC9320 »	3	1.58	0.19	2.39
NG3189RK KC9320 »	3	4.80	0.57	3.81
NG3M150RK KC9320 »	3	1.50	0.19	2.39
NG3M200RK KC9320 »	3	2.00	0.19	2.39
NG3M225RK KC9320 »	3	2.24	0.19	2.39
NG3M250RK KC9320 »	3	2.50	0.19	3.81
NG3M300RK KC9320 »	3	3.00	0.19	3.81
NG3M400RK KC9320 »	3	3.99	0.32	3.81
NG4M350RK KC9320 »	4	3.50	0.57	6.35
NG4M400RK KC9320 »	4	4.00	0.57	6.35
NG4M500RK KC9320 »	4	5.00	0.32	6.35
NG4M600RK KC9320 »	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
NG3062LK KC9320 »	3	1.58	0.19	2.39
NG3189LK KC9320 »	3	4.80	0.57	3.81
NG3M150LK KC9320 »	3	1.50	0.19	2.39
NG3M200LK KC9320 »	3	2.00	0.19	2.39
NG3M225LK KC9320 »	3	2.24	0.19	2.39
NG3M250LK KC9320 »	3	2.50	0.19	3.81
NG3M300LK KC9320 »	3	3.00	0.19	3.81
NG3M400LK KC9320 »	3	3.99	0.32	3.81
NG4M350LK KC9320 »	4	3.50	0.57	6.35
NG4M400LK KC9320 »	4	4.00	0.57	6.35
NG4M500LK KC9320 »	4	5.00	0.32	6.35
NG4M600LK KC9320 »	4	6.00	0.57	6.35

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

NR-L

Full radius grooving. Turning profiling. Neutral rake angle.

Product Code	Seat	W	RC	T
NR2M050L KC9320 »	2	1.00	0.50	1.27
NR2M100L KC9320 »	2	2.00	1.00	2.79
NR2M125L KC9320 »	2	2.50	1.25	2.79
NR2M150L KC9320 »	2	3.00	1.50	2.79
NR2M175L KC9320 »	2	3.50	1.75	2.79
NR3M100L KC9320 »	3	2.00	1.00	2.39
NR3M125L KC9320 »	3	2.50	1.25	3.81
NR3M150L KC9320 »	3	3.00	1.50	3.81
NR3M175L KC9320 »	3	3.50	1.75	3.81
NR3M200L KC9320 »	3	4.00	2.00	3.81
NR3M225L KC9320 »	3	4.50	2.25	3.81
NR4M200L KC9320 »	4	4.00	2.00	6.35
NR4M225L KC9320 »	4	4.50	2.25	6.35
NR4M250L KC9320 »	4	5.00	2.50	6.35

NR-R

Full radius grooving. Turning profiling. Neutral rake angle.

Product Code	Seat	W	RC	T
NR2M050R KC9320 »	2	1.00	0.50	1.27
NR2M075R KC9320 »	2	1.50	0.75	2.79
NR2M100R KC9320 »	2	2.00	1.00	2.79
NR2M125R KC9320 »	2	2.50	1.25	2.79
NR2M150R KC9320 »	2	3.00	1.50	2.79
NR2M175R KC9320 »	2	3.50	1.75	2.79
NR3M100R KC9320 »	3	2.00	1.00	2.39
NR3M125R KC9320 »	3	2.50	1.25	3.81
NR3M150R KC9320 »	3	3.00	1.50	3.81
NR3M175R KC9320 »	3	3.50	1.75	3.81
NR3M200R KC9320 »	3	4.00	2.00	3.81
NR3M225R KC9320 »	3	4.50	2.25	3.81
NR4M200R KC9320 »	4	4.00	2.00	6.35
NR4M225R KC9320 »	4	4.50	2.25	6.35
NR4M250R KC9320 »	4	5.00	2.50	6.35