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    65 Products

    Boring Milling Machine Tool Holders

    Instead of widening a hole using a lathe, which turns the workpiece while the cutting tool stays still, use these holders to turn your boring bar in a milling machine and keep the workpiece stationary. They’re good for creating holes that are too large to drill or a diameter you don’t have a drill bit for. To help you bore holes to precise diameters, these holders have an adjustment dial with fine increments. Mount them in your milling machine using their shank. They’re also known as boring heads.
    Holder with Round Shank
    Image of Product. Front orientation. Milling Machine Tool Holders. Boring Milling Machine Tool Holders, Holder with Round Shank.
    Image of Specification. Front orientation. ZoomedIn view. Contains Border. Adjustment Dial.

    Adjustment

    Dial

    Shank
    For Tool Bit
    Shank Dia.
    Lg.
    Dia.
    Head
    Dia.
    Offset
    Travel
    Vert. Hole
    Spacing
    Overall
    Lg.
    Material
    Features
    Each
    3/8"2 5/8"3/4"2"0.75"0.625"5 1/16"Steel
    		Adjustment Dial6380N1010000000
    1/2"2 5/8"3/4"2 1/2"0.75"0.75"5 13/16"Steel
    		Adjustment Dial6380N102000000
    5/8"2 5/8"3/4"2 1/2"0.75"0.75"5 13/16"Steel
    		Adjustment Dial6380N103000000
    3/4"2 5/8"1"3"1.25"0.938"6 1/8"Steel
    		Adjustment Dial6380N104000000
    Holder with R8 Taper Shank
    Image of Product. Front orientation. Milling Machine Tool Holders. Boring Milling Machine Tool Holders, Holder with R8 Taper Shank.
    Image of Specification. Front orientation. ZoomedIn view. Contains Border. Adjustment Dial.

    Adjustment

    Dial

    For Tool Bit
    Shank Dia.
    Shank
    Lg.
    Head
    Dia.
    Offset
    Travel
    Vert. Hole
    Spacing
    Overall
    Lg.
    Material
    Features
    Each
    3/8"4"2"0.75"0.625"6 7/16"Steel
    		Adjustment Dial6380N1050000000
    1/2"4"2 1/2"0.75"0.75"7 3/16"Steel
    		Adjustment Dial6380N106000000
    5/8"4"2 1/2"0.75"0.75"7 3/16"Steel
    		Adjustment Dial6380N107000000
    3/4"4"3"1.25"0.938"7 1/2"Steel
    		Adjustment Dial6380N108000000
    Holder for Interchangeable Shanks
    Image of Product. Front orientation. Milling Machine Tool Holders. Boring Milling Machine Tool Holders, Holder for Interchangeable Shanks.
    Image of Specification. Front orientation. ZoomedIn view. Contains Border. Adjustment Dial.

    Adjustment

    Dial

    Holders for interchangeable shanks work with various hole sizes and machines. Add a compatible body, these holders do not include one.
    For Tool Bit
    Shank Dia.
    Thread
    Size
    Head
    Dia.
    Offset
    Travel
    Vert. Hole
    Spacing
    Overall
    Lg.
    Material
    Features
    Each
    3/8"7/8"-20
    		2"0.75"0.625"2 7/16"Steel
    		Adjustment Dial6380N1090000000
    1/2"7/8"-20
    		2 1/2"0.75"0.75"3 3/16"Steel
    		Adjustment Dial6380N11000000
    5/8"7/8"-20
    		2 1/2"0.75"0.75"3 3/16"Steel
    		Adjustment Dial6380N111000000
    3/4"1 1/2"-18
    		3"1.25"0.313"3 1/2"Steel
    		Adjustment Dial6380N112000000
    Milling Machine Tool Holder Bodies
    Image of Product. Front orientation. Milling Machine Tool Holder Bodies. Boring Milling Machine Tool Holders, Round Shank.
    Image of Product. Front orientation. Milling Machine Tool Holder Bodies. Boring Milling Machine Tool Holders, R8 Taper Shank.
    Image of Product. Front orientation. Milling Machine Tool Holder Bodies. Boring Milling Machine Tool Holders, Morse Taper Shank.
    Image of Product. Front orientation. Milling Machine Tool Holder Bodies. Boring Milling Machine Tool Holders, Machine Taper Shank.

    Round Shank

    R8 Taper Shank

    Morse Taper Shank

    Machine Taper Shank

    Shank
    Thread
    Size
    Machine
    Taper No.
    Lg.
    Dia.
    Material
    Includes
    Each
    Round Shank
    7/8"-20
    		—2 5/8"1/2"Steel
    		—6380N12000000
    7/8"-20
    		—2 5/8"3/4"Steel
    		—6380N12300000
    1 1/2"-18
    		—2 5/8"1"Steel
    		—6380N12500000
     
    R8 Taper Shank
    7/8"-20
    		—4"—Steel
    		—6380N12700000
    1 1/2"-18
    		—4"—Steel
    		—6380N12900000
     
    Morse Taper Shank
    7/8"-20
    		Morse 33 7/8"—Steel
    		Tang6380N11400000
    1 1/2"-18
    		Morse 44 7/8"—Steel
    		Tang6380N117000000
     
    Machine Taper Shank
    7/8"-20
    		NMTB 403 3/4"—Steel
    		Draw Bar, Drive Flange6380N119000000
    1 1/2"-18
    		NMTB 403 3/4"—Steel
    		Draw Bar, Drive Flange6380N122000000
     

    Tool Holder Cleaning Tools

    Keep your tool holder debris-free to maintain tight tolerances, ensure uniform clamping, and prevent vibration and wear that shortens tool and machine life. These cleaners wipe away chips, lubricants, and fine dust better than rags, cleaners, and degreasers. Precisely sized to your tool holder or bore, just insert them and rotate them by hand to wipe the surface clean.
    For Tool Holder Shanks
    Image of ProductInUse. Side1 orientation. CrossSection view. Contains Annotated. Tool Holder Cleaning Tools. For Tool Holder Shanks.
    Image of Product. Front orientation. Tool Holder Cleaning Tools. For Tool Holder Shanks.
    Cleaners for tool holder shanks are shaped to fit around the outside of the shank.
    For
    Dia.
    For Shank Taper No.
    Min.
    Max.
    Taper
    Lg.
    Overall
    Lg.
    Material
    Each
    BT, CAT, ISO, SK Tapers
    BT 30, CAT 30, ISO 30, SK 300.69"1 1/4"1.91"2 7/8"Plastic9399N15000000
    BT 40, CAT 40, ISO 40, SK 400.1"1 3/4"2.58"4"Plastic9399N1600000
     
    HSK Tapers
    HSK 40A, HSK 40C, HSK 40E, HSK 50B, HSK 50D, HSK 50F1.1"1.18"0.79"5 5/8"Plastic9399N1700000
    HSK 50A, HSK 50C, HSK 50E, HSK 63B, HSK 63D, HSK 63F1.4"1 1/2"0.98"5 5/8"Plastic9399N1800000
    HSK 63A, HSK 63C, HSK 63E, HSK 80B, HSK 80D, HSK 80F1.76"1.89"1.3"6 1/8"Plastic9399N1900000
    HSK 80A, HSK 80C, HSK 80E, HSK 100B, HSK 100D, HSK 100F2.21"2.36"1.57"6 1/2"Plastic9399N21000000
    HSK 100A, HSK 100C, HSK 100E, HSK 125B, HSK 125D, HSK 125F2.76"2.95"1.97"6 1/2"Plastic9399N22000000
     
    For Tool Holder Bores—Tapered
    Image of ProductInUse. Side1 orientation. CrossSection view. Contains Annotated. Tool Holder Cleaning Tools. For Tool Holder Bores—Tapered.
    Image of Product. Front orientation. Tool Holder Cleaning Tools. For Tool Holder Bores—Tapered.
    Cleaners for tool holder bores clean the inside of tool holders.
    Those for tapered bores are shaped to clean the inside of collet chucks and fixtures.
    For
    Dia.
    For Collet
    Type
    Min.
    Max.
    Taper
    Lg.
    Overall
    Lg.
    Material
    Each
    ER-110.32"0.43"0.79"1 1/8"Plastic9399N23000000
    ER-160.43"0.63"1.1"2 1/4"Plastic9399N2400000
    ER-200.55"0.79"1.26"2 3/8"Plastic9399N2500000
    ER-250.71"0.98"1.35"2 5/8"Plastic9399N2600000
    ER-320.94"1.26"1.53"2 7/8"Plastic9399N2700000
    ER-401.2"1.55"1.73"5 5/8"Plastic9399N1400000
    OZ160.79"0.92"1.77"5 3/4"Plastic9399N1100000
    OZ251.11"1.29"2.17"6 1/8"Plastic9399N1200000
    OZ321.43"1.64"2.56"6 1/2"Plastic9399N1300000
     
    For Tool Holder Bores—Round
    Image of ProductInUse. Side1 orientation. CrossSection view. Contains Annotated. Tool Holder Cleaning Tools. For Tool Holder Bores—Round.
    Image of Product. Front orientation. Tool Holder Cleaning Tools. For Tool Holder Bores—Round.
    Cleaners for tool holder bores clean the inside of tool holders.
    Those for round bores work like cotton swabs—slide them in to clean out the bores where you place your cutting tools. You can also use them to clean delicate surfaces inside any other round hole.
    For Bore Size
    Overall
    Lg.
    Material
    Each
    3 mm, 1/8"2 7/8"Plastic9399N28000000
    4 mm, 5/32"2 7/8"Plastic9399N2900000
    5 mm, 13/64"3 1/2"Plastic9399N3100000
    6 mm, 15/64"3 1/2"Plastic9399N3200000
    6.3 mm, 1/4"3 1/2"Plastic9399N3300000
    7 mm, 9/32"3 5/8"Plastic9399N3400000
    8 mm, 5/16"3 5/8"Plastic9399N3500000
    9 mm, 11/32"3 7/8"Plastic9399N3600000
    9.5 mm, 3/8"3 7/8"Plastic9399N3700000
    10 mm, 13/32"3 7/8"Plastic9399N3800000
    11 mm, 7/16"4 1/4"Plastic9399N3900000
    12 mm, 15/32"4 1/2"Plastic9399N4100000
    12.7 mm, 1/2"4 1/2"Plastic9399N4200000
    13 mm, 33/64"6 5/8"Plastic9399N4300000
    14 mm, 9/16"6 5/8"Plastic9399N4400000
    15 mm, 19/32"6 5/8"Plastic9399N4500000
    16 mm, 5/8"6 7/8"Plastic9399N4600000
    18 mm, 23/32"6 7/8"Plastic9399N4700000
    19 mm, 3/4"6 7/8"Plastic9399N4800000
    20 mm, 13/16"6 7/8"Plastic9399N4900000
    22 mm, 7/8"7 1/4"Plastic9399N5100000
    24 mm, 15/16"7 1/2"Plastic9399N5200000
    25 mm, 1"7 3/8"Plastic9399N5300000
    28 mm, 1 1/8"7 7/8"Plastic9399N5400000
    31 mm, 1 7/32"8 1/8"Plastic9399N5500000
    32 mm, 1 1/4"8 1/2"Plastic9399N5600000
    40 mm, 1 9/16"9"Plastic9399N5700000
    42 mm, 1 21/32"9 1/8"Plastic9399N5800000
     
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