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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.

26 Item(s)

per page

Set Descending Direction
  1. A-NNT -1

    Product Code D min D D2 L1 L2 F A  
    A10KNNTOR1 » 11.50 10.00 8.70 125.00 31.75 7.00 3.20
    A-NNT -1
  2. 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
    A-NNT-L
  3. A-NNT -2

    Product Code D min D D2 L1 L2 F A CS  
    A12MNNTOR1 » 11.50 12.00 8.70 150.00 31.30 7.00 4.00 1/16-27 NPT
    A-NNT -2
  4. A-NNT-R

    Product Code D min D L1 F CS  
    A12MNNTOR2 » 18.50 12.00 150.00 11.00 1/16-27 NPT
    A16MNNTOR2 » 22.00 16.00 150.00 11.00 1/8-27 NPT
    A20QNNTOR2 » 26.00 20.00 180.00 13.00 1/8-27 NPT
    A25RNNTOR2 » 34.00 25.00 200.00 17.00 1/4-18 NPT
    A25RNNTOR3 » 34.00 25.00 200.00 17.00 1/4-18 NPT
    A32SNNTOR3 » 44.00 32.00 250.00 22.00 1/4-18 NPT
    A40TNNTOR3 » 54.00 40.00 300.00 27.00 1/4-18 NPT
    A40TNNTOR4 » 54.00 40.00 300.00 27.00 1/4-18 NPT
    A50UNNTOR4 » 70.00 50.00 350.00 35.00 1/4-18 NPT
    A-NNT-R
  5. 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
    E-NNT -L
  6. E-NNT -R

    Carbide shank boring bars

    Product Code D min D D2 L1 A  
    E16RNNTOR2 » 22.00 16.00 200.00 11.00 5.54
    E20SNNTOR2 » 26.00 20.00 250.00 13.00 7.14
    E25TNNTOR3 » 34.00 25.00 300.00 17.00 7.94
    E-NNT -R

26 Item(s)

per page

Set Descending Direction

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