Precision Hole Finishing

Kennametal offers comprehensive solutions for precision hole finishing. The portfolio includes solid reamers, modular reamers, expandable reamers, and rotating boring systems for large-volume production and fine-bore tooling. Kennametal's reaming tools are ideal for achieving fine surface finishes and tight tolerances. These tools feature cutting-edge geometries and materials, ensuring consistent results and extended tool life in precision hole finishing applications.   

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    Workpiece Material
    Workpiece Material
    • P Steel (943)
      • P0
        Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(895)
      • P1
        Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(943)
      • P2
        Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(943)
      • P3
        Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(943)
      • P4
        Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(943)
      • P5
        Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(943)
      • P6
        High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(943)
    • M Stainless Steel (847)
      • M1
        Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(847)
      • M2
        High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(847)
      • M3
        Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(847)
    • K Cast Iron (765)
      • K1
        Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(764)
      • K2
        Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(763)
      • K3
        High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(763)
    • N Non-Ferrous Materials (446)
      • N1
        Wrought Aluminum (417)
      • N2
        Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(427)
      • N3
        High-Silicon Aluminum Alloys Si >12.2%(212)
      • N4
        Copper, Brass, Zinc-based on machinability index range of 70-100 (422)
      • N5
        Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (371)
      • N6
        Carbon, Graphite Composites, CFRP (351)
      • N7
        MMC's (159)
    • S High-Temp Alloys (818)
      • S1
        Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(817)
      • S2
        Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(817)
      • S3
        Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(817)
      • S4
        Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(786)
    • H Hardened Materials (241)
      • H1
        Hardened Materials 44-48 HRC(241)
      • H2
        Hardened Materials 48-55 HRC(206)
      • H3
        Hardened Materials 56-60 HRC(154)
      • H4
        Hardened Materials >60 HRC(154)
    • C CFRP Materials (237)
      • C1
        CFRP, CFRP / CFRP (229)
      • C2
        CFRP / Aluminium CFRP / Non-Ferrous (158)
    Select First Choice
    • IN (25)
    • US (1)
    Applications
    Applications
    • Blind & Cross Hole FinishingBlind & Cross Hole Finishing (270)
    • Blind Hole FinishingBlind Hole Finishing (348)
    • BoringBoring (2)
    • FacingFacing (2)
    • GroovingGrooving (1)
    • ID FacingID Facing (2)
    • Multiple Direction CuttingMultiple Direction Cutting (12)
    • ProfilingProfiling (1)
    • Slot MillingSlot Milling (5)
    • Slot SideSlot Side (5)
    • Slot Square EndSlot Square End (5)
    • Through & Cross Hole FinishingThrough & Cross Hole Finishing (214)
    • Through Hole FinishingThrough Hole Finishing (308)
    • TurningTurning (2)
    Cutting Diameter
    Cutting Diameter
    • 0.1967 in(1)
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    • 0.4331 in(6)
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    • 0.4724 in(8)
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    Cutting Diameter MintoCutting Diameter Max
    Cutting Diameter
    Cutting Diameter
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    Cutting Diameter MintoCutting Diameter Max
    Cutting Condition Material
    Cutting Condition Material
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    • S4 (48)
    Cutting Condition
    Cutting Condition
    • Heavily Interrupted Cut (260)
    • Lightly Interrupted Cut (406)
    • Smooth Cut (605)
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    Reach
    Reach
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    • 1.045 in(1)
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    Reach MintoReach Max
    Reach
    Reach
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    Reach MintoReach Max
    Tool Cutting Edge Angle
    Tool Cutting Edge Angle
    • 90.0 (69)
    • 91.0 (8)
    • 92.0 (23)
    • 93.0 (1)
    • 95.0 (4)
    Tool Cutting Edge Angle MintoTool Cutting Edge Angle Max
    Connection Style
    Connection Style
    • E-BORE Boring Bar (21)
    • Short Taper Reamer Shank (192)
    • Straight-Cylindrical (140)
    • Whistle Notch 2 (3)
    • Whistle Notch 2 Front (12)
    Number of Flutes
    Number of Flutes
    • 2 (4)
    • 3 (1)
    • 4 (64)
    • 6 (178)
    • 8 (88)
    Cutting Edges Per Insert
    Cutting Edges Per Insert
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    • 1.0 (60)
    • 2.0 (373)
    • 3.0 (234)
    • 4.0 (155)
    Cutting Edges Per Insert MintoCutting Edges Per Insert Max
    Internal Coolant Capability
    Internal Coolant Capability
    Over All Length [L]
    Over All Length [L]
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    • 5.6296 in(1)
    Over All Length [L] MintoOver All Length [L] Max
    Over All Length [L]
    Over All Length [L]
    • 9.149 mm(1)
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    • 92.992 mm(1)
    • 97.992 mm(2)
    • 98.42 mm(2)
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    • 122.992 mm(1)
    • 123.82 mm(2)
    • 142.992 mm(1)
    Over All Length [L] MintoOver All Length [L] Max
    Corner configuration
    Corner Radius
    Corner Radius
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    Corner Radius
    Corner Radius
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    Corner Chamfer
    Corner Chamfer
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    Corner Chamfer
    Corner Chamfer
    • 0.0 in(806)
    Corner Chamfer MintoCorner Chamfer Max
    Application
    Minimum Depth of Cut
    Minimum Depth of Cut
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    Minimum Feed
    Grade Of Cutting Tool
    Grade Of Cutting Tool
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    F Dimension
    F Dimension
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    F Dimension
    F Dimension
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    F Dimension MintoF Dimension Max
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    Lead in Length
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    Lead In Length
    Lead In Length
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    Minimum Axial Groove Diameter
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    • 200.0 mm(2)
    Minimum Axial Groove Diameter MintoMinimum Axial Groove Diameter Max
    Minimum Axial Groove Diameter
    Minimum Axial Groove Diameter
    • 0.08 in(1)
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    • 0.9646 in(1)
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    • 1.0039 in(2)
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    • 1.3189 in(1)
    • 1.3386 in(2)
    • 1.4173 in(2)
    • 1.5748 in(1)
    • 1.5945 in(1)
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    • 1.8504 in(1)
    • 1.9291 in(1)
    • 1.9685 in(1)
    • 2.0472 in(2)
    • 2.0866 in(1)
    • 2.2244 in(1)
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    • 2.4016 in(1)
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    • 3.82 in(1)
    • 3.937 in(2)
    • 4.0748 in(1)
    • 4.3307 in(1)
    • 4.9213 in(1)
    • 5.43 in(1)
    • 5.4331 in(2)
    • 7.874 in(2)
    Minimum Axial Groove Diameter MintoMinimum Axial Groove Diameter Max
    Maximum Axial Groove Diameter
    Maximum Axial Groove Diameter
    • 0.2756 in(1)
    • 0.315 in(2)
    • 0.3543 in(1)
    • 0.374 in(1)
    • 0.3937 in(2)
    • 0.4528 in(1)
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    • 0.5511 in(2)
    • 0.5512 in(2)
    • 0.5709 in(1)
    • 0.6299 in(4)
    • 0.6496 in(1)
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    • 8.0709 in(1)
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    Maximum Axial Groove Diameter MintoMaximum Axial Groove Diameter Max
    Maximum Axial Groove Diameter
    Maximum Axial Groove Diameter
    • 7.0 mm(1)
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    Maximum Axial Groove Diameter MintoMaximum Axial Groove Diameter Max
    Cutting Direction
    Cutting Direction
    • B (2)
    • E (31)
    Rake Angle Style
    Rake Angle Style
    • NEGATIVE-ZERO (21)
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    Maximum Bore Depth
    Maximum Bore Depth
    • 0.562 in(1)
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    • 0.853 in(1)
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    • 1.6948 in(1)
    • 1.9064 in(1)
    • 2.165 in(1)
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    • 2.2766 in(1)
    • 2.3622 in(2)
    • 2.7556 in(2)
    • 2.9524 in(2)
    • 3.543 in(2)
    • 3.9367 in(1)
    • 4.7241 in(1)
    Maximum Bore Depth MintoMaximum Bore Depth Max
    Maximum Bore Depth
    Maximum Bore Depth
    • 14.27 mm(1)
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    • 74.991 mm(1)
    • 74.992 mm(1)
    • 89.992 mm(2)
    • 99.992 mm(1)
    • 119.992 mm(1)
    Maximum Bore Depth MintoMaximum Bore Depth Max
    Boring Bar Material
    Boring Bar Material
    • S (25)
    Front-End
    Cutting Width
    Cutting Width
    • 0.118 in(1)
    • 0.125 in(1)
    Cutting Width MintoCutting Width Max
    Cutting Width
    Cutting Width
    • 3.0 mm(1)
    • 3.18 mm(1)
    Cutting Width MintoCutting Width Max
    Insert Shape
    Insert Shape
    • C-DIAMOND/RHOMBIC 80 (514)
    • GROOVING/CUTOFF MISC (7)
    • L-RECTANGLE 90 (4)
    • S-SQUARE 90 (66)
    • T-TRIANGLE 60 (240)
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    • X-TRIGON 82 (1)
    Cartridge Size
    Cartridge Size
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    • 3Y (1)
    Maximum Cutting Depth
    Maximum Cutting Depth
    • 0.039 in(5)
    • 0.1378 in(1)
    • 0.1575 in(2)
    • 0.1772 in(1)
    • 0.187 in(1)
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    • 0.236 in(2)
    • 0.2362 in(3)
    • 0.2756 in(4)
    • 0.2855 in(1)
    • 0.315 in(4)
    • 0.3248 in(1)
    • 0.3347 in(1)
    • 0.3839 in(1)
    • 0.3937 in(4)
    • 0.4429 in(1)
    • 0.4922 in(1)
    • 0.502 in(1)
    • 0.5906 in(1)
    Maximum Cutting Depth MintoMaximum Cutting Depth Max
    Maximum Cutting Depth
    Maximum Cutting Depth
    • 1.0 mm(5)
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    • 15.0 mm(1)
    Maximum Cutting Depth MintoMaximum Cutting Depth Max
    Gage Length
    Gage Length
    • 12.5000 in(1)
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    • 22.5000 in(1)
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    • 59.8900 in(1)
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    • 66.0000 in(2)
    • 68.0000 in(2)
    • 69.9000 in(1)
    • 70.0000 in(6)
    • 72.0000 in(1)
    • 72.0020 in(1)
    • 75.0000 in(3)
    • 76.0000 in(1)
    • 76.0010 in(1)
    • 80.0000 in(1)
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    • 85.0000 in(5)
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    • 135.0000 in(1)
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    • 174.0000 in(2)
    • 185.5000 in(2)
    • 190.0000 in(2)
    • 217.5000 in(2)
    • 249.0000 in(2)
    • 274.0000 in(2)
    Gage Length
    Gage Length
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    Center Cutting
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    Shape
    Shape
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    Insert IC Size MintoInsert IC Size Max
    Insert IC Size
    Insert IC Size
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    • 0.25 in(275)
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    • 0.315 in(2)
    • 0.354 in(3)
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    • 0.375 in(279)
    • 0.5 in(7)
    Insert IC Size MintoInsert IC Size Max
    Cutting Edge Length
    Cutting Edge Length
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    Cutting Edge Length
    Cutting Edge Length
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    • 0.2539 in(161)
    • 0.254 in(3)
    • 0.2559 in(2)
    • 0.2756 in(2)
    • 0.315 in(2)
    • 0.354 in(3)
    • 0.3543 in(1)
    • 0.356 in(1)
    • 0.3789 in(8)
    • 0.379 in(4)
    • 0.3791 in(17)
    • 0.3808 in(189)
    • 0.433 in(41)
    • 0.4331 in(70)
    • 0.508 in(2)
    • 0.5699 in(1)
    • 0.6495 in(42)
    • 0.6496 in(41)
    • 0.65 in(7)
    • 0.709 in(1)
    • 0.8661 in(5)
    • 1.063 in(1)
    • 1.772 in(1)
    Cutting Edge Length MintoCutting Edge Length Max
    Chip Breaker CBMD
    Chip Breaker CBMD
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    Tolerance Class
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    Back-End
    Connection Type
    Connection Type
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    Back-End Diameter
    Back-End Diameter
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    Back-End Diameter
    Back-End Diameter
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    • 0.63 in(4)
    • 0.689 in(20)
    • 0.69 in(6)
    • 0.7087 in(1)
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    • 0.75 in(3)
    • 0.787 in(49)
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    • 0.984 in(33)
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    • 1.967 in(5)
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