Top Notch™ Grooving
If your applications require you to work with many different workpiece materials and feed rates, you must take steps to control vibrations and chipping. After all, too much chatter leaves you with inconsistent and rough results. To help you improve machining processes, Kennametal has developed Top Notch grooving tools and tool holders. Kennametal Top Notch tools include boring bars, CBN inserts, heads, and cartridges.
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Workpiece Material
Workpiece Material
- P Steel (1703)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(1703)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(1703)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(1703)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(1703)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(1703)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(1703)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(1703)
- M Stainless Steel (1837)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(1837)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(1837)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(1837)
- K Cast Iron (1279)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(1279)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(1279)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(1279)
- N Non-Ferrous Materials (1518)
- N1Wrought Aluminum (1510)
- N2Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(1355)
- N3High-Silicon Aluminum Alloys Si >12.2%(87)
- N4Copper, Brass, Zinc-based on machinability index range of 70-100 (1518)
- N5Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (1363)
- N6Carbon, Graphite Composites, CFRP (1355)
- S High-Temp Alloys (1851)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(1851)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(1851)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(1851)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(1851)
- H Hardened Materials (614)
- H1Hardened Materials 44-48 HRC(614)
- H2Hardened Materials 48-55 HRC(141)
- H3Hardened Materials 56-60 HRC(128)
- H4Hardened Materials >60 HRC(128)
Applications
Applications
Back Boring (496)
Boring (1580)
Cut-Off (8)
Face Grooving (2297)
Facing (496)
Grooving (2234)
ID Facing (503)
ID Grooving (2060)
ID Thread Turning (69)
OD Thread Turning (128)
Plunge Turning (1503)
Profiling (580)
Turning (1605)
Type of Thread
Type of Thread
- 60 (188)
- ACME (123)
- API (115)
- API RD (82)
- BSW (79)
- BUTTRESS (183)
- M (41)
- NPT (79)
- STUB ACME (79)
- UN (183)
- UNJ (79)
Cutting Condition
Cutting Condition
- Heavily Interrupted Cut (1697)
- Lightly Interrupted Cut (1789)
- Smooth Cut (1986)
Tool Cutting Edge Angle
Tool Cutting Edge Angle
- 45.0 (13)
- 90.0 (186)
to
Connection Style
Connection Style
- Bolt-On Head (6)
- Boring Bar Shank (63)
- Toolholder (91)
Cutting Edges Per Insert
Cutting Edges Per Insert
- 1.0 (490)
- 2.0 (2013)
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Over All Length [L]
Over All Length [L]
- 41.275 mm(6)
- 55.0 mm(1)
- 55.67 mm(1)
- 63.5 mm(4)
- 70.0 mm(2)
- 80.0 mm(2)
- 88.9 mm(4)
- 100.0 mm(4)
- 101.6 mm(3)
- 114.3 mm(16)
- 125.0 mm(11)
- 127.0 mm(16)
- 150.0 mm(21)
- 152.4 mm(39)
- 170.0 mm(11)
- 177.8 mm(2)
- 179.8 mm(2)
- 200.0 mm(4)
- 202.591 mm(1)
- 203.2 mm(5)
- 250.0 mm(2)
- 250.927 mm(1)
- 254.0 mm(8)
- 300.0 mm(4)
- 304.8 mm(8)
- 350.0 mm(1)
- 355.6 mm(10)
- 406.4 mm(10)
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Availability
gsaApproval
gsaApproval
Corner Radius
Corner Radius
- 0.025 mm(42)
- 0.05 mm(41)
- 0.075 mm(198)
- 0.1 mm(361)
- 0.125 mm(79)
- 0.15 mm(115)
- 0.175 mm(204)
- 0.2 mm(1183)
- 0.225 mm(79)
- 0.25 mm(155)
- 0.275 mm(41)
- 0.3 mm(79)
- 0.325 mm(233)
- 0.35 mm(165)
- 0.4 mm(82)
- 0.45 mm(96)
- 0.475 mm(41)
- 0.5 mm(164)
- 0.575 mm(380)
- 0.75 mm(39)
- 0.775 mm(228)
- 0.825 mm(9)
- 0.9 mm(115)
- 1.0 mm(159)
- 1.2 mm(207)
- 1.25 mm(38)
- 1.5 mm(158)
- 1.575 mm(97)
- 1.6 mm(277)
- 1.75 mm(38)
- 1.975 mm(98)
- 2.0 mm(83)
- 2.4 mm(173)
- 2.5 mm(20)
- 3.175 mm(78)
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Corner Chamfer
Corner Chamfer
- 0.0 mm(2127)
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Application
Minimum Depth of Cut
Minimum Feed
Grade Of Cutting Tool
Grade Of Cutting Tool
- K313 (233)
- K420 (207)
- K68 (304)
- KB1630 (126)
- KBH20 (43)
- KC5010 (370)
- KC5025 (393)
- KC5410 (113)
- KC720 (214)
- KC730 (410)
- KC850 (329)
- KC9110 (19)
- KCK20 (153)
- KCK20B (206)
- KCP10B (243)
- KCP25B (289)
- KCP25C (183)
- KCU10 (386)
- KCU10B (406)
- KCU25 (465)
- KCU25B (484)
- KD1425 (87)
- KT315 (145)
Hand Of Tool
Hand Of Tool
- L (68)
- R (92)
Wiper Insert
Wiper Insert
- N (2322)
F Dimension
F Dimension
- 6.553 mm(2)
- 7.0 mm(2)
- 9.52 mm(2)
- 10.0 mm(1)
- 10.312 mm(1)
- 10.785 mm(1)
- 10.973 mm(2)
- 11.0 mm(4)
- 11.1 mm(2)
- 12.0 mm(1)
- 12.573 mm(2)
- 12.7 mm(6)
- 13.0 mm(2)
- 14.0 mm(2)
- 14.148 mm(2)
- 14.27 mm(1)
- 14.275 mm(3)
- 15.875 mm(2)
- 15.88 mm(2)
- 16.0 mm(4)
- 16.256 mm(2)
- 17.0 mm(4)
- 17.348 mm(2)
- 17.475 mm(2)
- 17.48 mm(2)
- 19.05 mm(2)
- 19.431 mm(1)
- 20.0 mm(2)
- 22.0 mm(2)
- 22.225 mm(3)
- 22.61 mm(2)
- 25.0 mm(6)
- 25.4 mm(11)
- 27.0 mm(4)
- 28.575 mm(1)
- 31.75 mm(23)
- 32.0 mm(12)
- 32.537 mm(2)
- 34.925 mm(4)
- 35.0 mm(1)
- 38.1 mm(16)
- 40.0 mm(4)
- 41.275 mm(4)
- 50.8 mm(4)
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Minimum Bore Diameter
Minimum Bore Diameter
- 11.176 mm(1)
- 11.18 mm(1)
- 11.5 mm(2)
- 18.5 mm(2)
- 18.542 mm(4)
- 20.32 mm(1)
- 22.0 mm(3)
- 25.4 mm(4)
- 26.0 mm(2)
- 28.575 mm(3)
- 28.58 mm(1)
- 34.0 mm(4)
- 34.92 mm(2)
- 34.925 mm(4)
- 44.0 mm(2)
- 44.45 mm(2)
- 50.8 mm(2)
- 54.0 mm(4)
- 57.15 mm(6)
- 60.325 mm(2)
- 63.5 mm(4)
- 69.85 mm(4)
- 70.0 mm(1)
- 76.2 mm(4)
- 82.55 mm(4)
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Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
- 0.0 mm(152)
- 11.176 mm(1)
- 11.18 mm(1)
- 11.5 mm(2)
- 18.5 mm(2)
- 18.542 mm(4)
- 20.32 mm(1)
- 22.0 mm(3)
- 25.4 mm(4)
- 26.0 mm(2)
- 28.575 mm(3)
- 28.58 mm(1)
- 34.0 mm(4)
- 34.92 mm(2)
- 34.925 mm(4)
- 38.1 mm(4)
- 41.3 mm(58)
- 44.0 mm(2)
- 44.45 mm(2)
- 47.6 mm(57)
- 50.0 mm(2)
- 50.8 mm(2)
- 54.0 mm(4)
- 55.88 mm(3)
- 56.625 mm(49)
- 57.15 mm(6)
- 57.2 mm(29)
- 60.325 mm(4)
- 63.5 mm(22)
- 69.85 mm(4)
- 70.0 mm(1)
- 76.2 mm(8)
- 82.55 mm(4)
- 88.9 mm(565)
- 127.0 mm(1)
- 139.7 mm(785)
- 146.05 mm(3)
- 174.6 mm(141)
- 209.6 mm(256)
- 222.3 mm(66)
- 333.0 mm(4)
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Maximum Axial Groove Diameter
Maximum Axial Groove Diameter
- 9999.0 mm(1957)
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Countersunk Angle
Countersunk Angle
- 20.0 (6)
- 45.0 (12)
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Cutting Direction
Cutting Direction
- E (88)
- S (72)
Rake Angle Style
Rake Angle Style
- NEUTRAL (ZERO) (160)
Maximum Bore Depth
Maximum Bore Depth
- 25.4 mm(10)
- 31.26 mm(1)
- 31.3 mm(1)
- 32.8 mm(1)
- 38.1 mm(1)
- 48.0 mm(2)
- 50.8 mm(25)
- 63.48 mm(1)
- 63.5 mm(2)
- 64.0 mm(2)
- 76.2 mm(4)
- 80.0 mm(2)
- 95.25 mm(2)
- 96.0 mm(1)
- 100.0 mm(4)
- 101.6 mm(6)
- 114.3 mm(2)
- 127.0 mm(3)
- 128.0 mm(2)
- 152.4 mm(6)
- 160.0 mm(4)
- 177.8 mm(3)
- 200.0 mm(1)
- 203.2 mm(8)
- 228.6 mm(1)
- 254.0 mm(7)
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Boring Bar Material
Boring Bar Material
- C (9)
- S (60)
Front-End
Clamp Style
Clamp Style
- N (198)
Cutting Width
Cutting Width
- 0.5 mm(80)
- 0.787 mm(127)
- 0.8 mm(84)
- 0.889 mm(37)
- 0.991 mm(70)
- 1.0 mm(187)
- 1.041 mm(87)
- 1.19 mm(125)
- 1.194 mm(216)
- 1.2 mm(179)
- 1.39 mm(72)
- 1.397 mm(37)
- 1.4 mm(86)
- 1.473 mm(77)
- 1.5 mm(181)
- 1.57 mm(156)
- 1.575 mm(321)
- 1.69 mm(36)
- 1.7 mm(86)
- 1.702 mm(70)
- 1.75 mm(165)
- 1.829 mm(108)
- 1.94 mm(34)
- 1.95 mm(83)
- 1.956 mm(33)
- 1.981 mm(111)
- 2.0 mm(218)
- 2.007 mm(70)
- 2.2 mm(163)
- 2.235 mm(142)
- 2.236 mm(50)
- 2.24 mm(72)
- 2.25 mm(127)
- 2.387 mm(53)
- 2.388 mm(305)
- 2.39 mm(49)
- 2.464 mm(92)
- 2.5 mm(188)
- 2.667 mm(96)
- 2.74 mm(32)
- 2.743 mm(37)
- 2.75 mm(178)
- 2.794 mm(88)
- 2.997 mm(119)
- 3.0 mm(256)
- 3.099 mm(84)
- 3.17 mm(97)
- 3.175 mm(472)
- 3.18 mm(62)
- 3.2 mm(142)
- 3.245 mm(77)
- 3.25 mm(89)
- 3.251 mm(42)
- 3.27 mm(32)
- 3.32 mm(43)
- 3.5 mm(169)
- 3.607 mm(92)
- 3.81 mm(44)
- 3.82 mm(43)
- 3.835 mm(37)
- 3.84 mm(74)
- 3.96 mm(96)
- 3.962 mm(125)
- 3.974 mm(42)
- 3.988 mm(81)
- 4.0 mm(162)
- 4.242 mm(37)
- 4.25 mm(92)
- 4.5 mm(128)
- 4.521 mm(83)
- 4.699 mm(86)
- 4.775 mm(160)
- 4.78 mm(21)
- 4.785 mm(23)
- 4.788 mm(26)
- 4.8 mm(95)
- 4.801 mm(238)
- 4.88 mm(47)
- 4.95 mm(90)
- 4.953 mm(45)
- 4.978 mm(85)
- 5.0 mm(54)
- 5.004 mm(19)
- 5.41 mm(40)
- 5.5 mm(40)
- 6.0 mm(44)
- 6.35 mm(148)
- 6.36 mm(24)
- 6.502 mm(42)
- 7.137 mm(2)
- 7.925 mm(4)
- 9.525 mm(5)
- 9.677 mm(5)
- 9.754 mm(9)
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Insert Shape
Insert Shape
- PRISMATIC (2)
- TN-TOP NOTCH (2250)
Insert Size
Insert Size
- 1 (5)
- 2 (41)
- 3 (44)
- 4 (16)
- 6 (2)
Maximum Cutting Depth
Maximum Cutting Depth
- 1.016 mm(1)
- 1.6 mm(2)
- 1.69 mm(1)
- 1.78 mm(2)
- 1.9 mm(1)
- 3.3 mm(1)
- 3.505 mm(21)
- 3.51 mm(19)
- 5.33 mm(16)
- 5.334 mm(23)
- 6.35 mm(2)
- 7.46 mm(8)
- 7.468 mm(9)
- 7.47 mm(6)
- 7.62 mm(1)
- 8.484 mm(4)
- 10.54 mm(1)
- 10.541 mm(1)
- 10.543 mm(1)
to
Maximum Cutting Insert Depth
Maximum Cutting Insert Depth
- 0.64 mm(12)
- 0.76 mm(19)
- 0.762 mm(138)
- 1.015 mm(8)
- 1.016 mm(266)
- 1.02 mm(8)
- 1.09 mm(47)
- 1.092 mm(163)
- 1.335 mm(15)
- 1.905 mm(1)
- 1.97 mm(6)
- 1.981 mm(6)
- 2.54 mm(11)
- 2.75 mm(7)
- 2.777 mm(3)
- 2.92 mm(53)
- 2.921 mm(121)
- 3.81 mm(70)
- 3.84 mm(6)
- 3.86 mm(4)
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Insert Geometry
Shape
Shape
- PRISMATIC (2)
- TN-TOP NOTCH (2051)
Insert Seat Size
Insert Seat Size
- 1 (16)
- 2 (631)
- 3 (1097)
- 4 (374)
- 5 (4)
- 6 (3)
Cutting Tool Material
Cutting Tool Material
- B H (126)
- B L (43)
- D P (87)
- H T (145)
- H W (2220)
Back-End
Connection Type
Connection Type
- BORING BAR (63)
- BORING BAR HEAD (6)
- SQUARE SHANK (91)
Back-End Diameter
Back-End Diameter
- 9.525 mm(1)
- 10.0 mm(1)
- 12.0 mm(3)
- 12.7 mm(5)
- 15.87 mm(1)
- 15.875 mm(4)
- 16.0 mm(3)
- 19.05 mm(4)
- 20.0 mm(2)
- 25.0 mm(4)
- 25.4 mm(8)
- 31.75 mm(3)
- 32.0 mm(2)
- 38.1 mm(4)
- 40.0 mm(4)
- 44.45 mm(3)
- 50.0 mm(1)
- 50.8 mm(8)
- 57.15 mm(1)
- 63.5 mm(7)
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Shank Height
Shank Height
- 9.52 mm(2)
- 9.525 mm(2)
- 10.0 mm(3)
- 12.0 mm(3)
- 12.7 mm(6)
- 15.41 mm(1)
- 15.875 mm(3)
- 15.88 mm(2)
- 16.0 mm(4)
- 19.05 mm(10)
- 20.0 mm(6)
- 23.82 mm(1)
- 25.0 mm(8)
- 25.4 mm(18)
- 30.82 mm(2)
- 31.75 mm(12)
- 32.0 mm(8)
- 38.1 mm(4)
- 38.82 mm(4)
- 46.96 mm(1)
to
Shank Width
Shank Width
- 9.52 mm(2)
- 9.525 mm(2)
- 10.0 mm(3)
- 12.0 mm(3)
- 12.7 mm(6)
- 15.875 mm(3)
- 15.88 mm(2)
- 16.0 mm(4)
- 19.05 mm(10)
- 20.0 mm(6)
- 21.96 mm(1)
- 25.0 mm(12)
- 25.4 mm(18)
- 28.96 mm(2)
- 31.75 mm(12)
- 32.0 mm(4)
- 36.96 mm(4)
- 38.1 mm(4)
- 46.96 mm(1)
to
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