Kennametal Top Notch Grooving Boring Bars

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.

A-NNT-L

Product Code	D min	D	L1	F	CS
A12MNNTOL2 »	18.50	12.00	150.00	11.00	1/16-27 NPT
A16MNNTOL2 »	22.00	16.00	150.00	11.00	1/8-27 NPT
A20QNNTOL2 »	26.00	20.00	180.00	13.00	1/8-27 NPT
A25RNNTOL2 »	34.00	25.00	200.00	17.00	1/4-18 NPT
A25RNNTOL3 »	34.00	25.00	200.00	17.00	1/4-18 NPT
A32SNNTOL3 »	44.00	32.00	250.00	22.00	1/4-18 NPT
A40TNNTOL3 »	54.00	40.00	300.00	27.00	1/4-18 NPT
A40TNNTOL4 »	54.00	40.00	300.00	27.00	1/4-18 NPT
A50UNNTOL4 »	70.00	50.00	350.00	35.00	1/4-18 NPT

E-NNT -L

Carbide shank boring bars

Product Code	D min	D	D2	L1	A
E16RNNTOL2 »	22.00	16.00	200.00	11.00	5.54
E20SNNTOL2 »	26.00	20.00	250.00	13.00	7.14
E25TNNTOL3 »	34.00	25.00	300.00	17.00	7.94