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    59 Products

    R8 Taper Arbors for Slitting Saws

    Image of Product. Front orientation. Contains Annotated. Slitting Saw Arbors. R8 Taper Arbors for Slitting Saws.
    Mount this arbor into manual milling machines that have an R8 taper spindle. It has a spring-loaded centering mechanism which allows it to hold saws with a range of arbor holes sizes. Use with high-speed steel slitting saws.
    For Max.
    Cutter
    Shank
    Thread
    Head
    For Arbor Hole Dia.
    Dia.
    Thk.
    Size
    Gender
    Dia.
    Lg.
    Overall
    Lg.
    Material
    Includes
    Each
    1/2", 5/8", 3/4", 7/8", 1"4"3/16"7/16"-20
    		Female1 1/4"3/8"4 13/16"Steel
    		Hex Key2807A33000000

    Face Mill Arbors

    Image of Product. Front orientation. Contains Annotated. Face Mill Arbors.
    Mount large-diameter milling cutters securely in Bridgeport and similar milling machines that have an R8 taper spindle.
    Shank
    Thread
    Head
    Nose
    For Arbor
    Hole Dia.
    Size
    Gender
    Dia.
    Lg.
    Dia
    Lg.
    For Keyway
    Wd.
    Material
    Fabrication
    Each
    1/2"7/16"-20
    		Female1 3/8"1"1/2"9/16"1/4"Steel
    		Heat Treated8778A110000000
    3/4"7/16"-20
    		Female2"1"3/4"11/16"5/16"Steel
    		Heat Treated8778A12000000
    1"7/16"-20
    		Female2.38"1"1"11/16"3/8"Steel
    		Heat Treated8778A13000000
    1 1/4"7/16"-20
    		Female2.88"1"1 1/4"11/16"1/2"Steel
    		Heat Treated8778A14000000
    1 1/2"7/16"-20
    		Female3 1/2"1 3/4"1 1/2"1"5/8"Steel
    		Heat Treated8778A15000000

    R8 Taper to Jacobs Taper Drill Chuck Arbors

    Image of Product. Front orientation. Contains Annotated. Drill Chuck Arbors. R8 Taper to Jacobs Taper Drill Chuck Arbors.
    Adapt machines with R8 taper spindles to mount Jacobs taper drill chucks. These arbors are made of hardened steel and are precision ground for accuracy. They thread onto your machine’s drawbar for a secure connection. Strike the top of the arbor to seat them onto a drill chuck. To separate them, use a drill chuck removal tool.
    Economy—Economy arbors are great for occasional or low-volume jobs.
    Industrial—Industrial arbors are harder and more wear resistant than Economy arbors.
    For Drill Chuck
    Taper No.
    Overall
    Lg.
    Material
    Hardness
    Each
    Economy
    Jacobs 14 13/16"Hardened SteelRockwell C28 (Hard)8775A16000000
    Jacobs 2, Jacobs 2s5 3/64"Hardened SteelRockwell C28 (Hard)8775A1700000
    Jacobs 35 25/64"Hardened SteelRockwell C28 (Hard)8775A2100000
    Jacobs 45 27/32"Hardened SteelRockwell C28 (Hard)8775A2200000
    Jacobs 65 25/64"Hardened SteelRockwell C28 (Hard)8775A1900000
    Jacobs 335 13/64"Hardened SteelRockwell C28 (Hard)8775A1800000
     
    Industrial
    Jacobs 14 53/64"Hardened SteelRockwell C55 (Extra Hard)8775A1100000
    Jacobs 2, Jacobs 2s5 5/64"Hardened SteelRockwell C55 (Extra Hard)8775A1200000
    Jacobs 35 27/64"Hardened SteelRockwell C55 (Extra Hard)8775A1300000
    Jacobs 65 15/64"Hardened SteelRockwell C55 (Extra Hard)8775A1400000
    Jacobs 335 15/64"Hardened SteelRockwell C55 (Extra Hard)8775A1500000
     

    R8 Taper End Mill Holders

    Image of Product. Front orientation. Contains Annotated. End Mill Holders. R8 Taper End Mill Holders.
    Hold end mills, drills, and reamers securely in manual milling machines that have an R8 taper spindle. Holders are ground to accurate size.
    Head
    For End Mill
    Shank Dia.
    For No. of End
    Mill Milling Ends
    Internal
    Thread Size
    Dia.
    Lg.
    Material
    Fabrication
    Includes
    Each
    1/8"17/16"-20
    		3/4"1 3/8"Steel
    		Heat TreatedSet Screws8781A33000000
    3/16"1, 27/16"-20
    		3/4"1 3/8"Steel
    		Heat TreatedSet Screws8781A2100000
    1/4"1, 27/16"-20
    		51/64"1 3/8"Steel
    		Heat TreatedSet Screws8781A3200000
    5/16"17/16"-20
    		7/8"1 3/4"Steel
    		Heat TreatedSet Screws8781A3400000
    3/8"1, 27/16"-20
    		1"1 3/8"Steel
    		Heat TreatedSet Screws8781A2200000
    1/2"17/16"-20
    		1 3/8"1 3/8"Steel
    		Heat TreatedSet Screws8781A2300000
    5/8"17/16"-20
    		1 21/32"1 1/2"Steel
    		Heat TreatedSet Screws8781A2400000
    3/4"17/16"-20
    		1 57/64"2 3/8"Steel
    		Heat TreatedSet Screws8781A25000000
    7/8"17/16"-20
    		2"2 3/4"Steel
    		Heat TreatedSet Screws8781A26000000
    1"17/16"-20
    		2 3/8"3 1/4"Steel
    		Heat TreatedSet Screws8781A27000000
    1 1/4"17/16"-20
    		2 1/2"3 1/4"Steel
    		Heat TreatedSet Screws8781A28000000
    1 1/2"17/16"-20
    		3"3 3/4"Steel
    		Heat TreatedSet Screws8781A29000000

    R8 Taper to Morse Taper Shank Adapters

    Image of Product. Front orientation. Contains Annotated. Machine Taper Shank Adapters. R8 Taper to Morse Taper Shank Adapters.
    Image of Attribute. Front orientation. Contains Annotated. R8 Taper to Morse Taper Shank Adapters.
    Adapt machines with R8 taper spindles to mount tools with a Morse taper shank, including drill bits, drill chucks, and reamers. These adapters are made of hardened steel and are precision ground for accuracy. They thread onto your machine’s drawbar for a secure connection.
    Slide your tool into these adapters and then press firmly to seat it. To separate them, use a Morse taper removal tool.
    Shank
    Type
    For Machine
    Taper No.
    Projection
    Material
    Each
    R8 TaperMorse 27/16"Hardened Steel8784A14000000
    R8 TaperMorse 32 1/2"Hardened Steel8784A15000000

    Quick-Change Milling Machine Tool Holders

    Image of System. Front orientation. Exploded view. Contains Annotated, MultipleImages. Milling Machine Tool Holders. Quick-Change Milling Machine Tool Holders.
    Swap tool holders in seconds without a wrench. This R8 quick-change system replaces conventional drawbar setups that require multiple turns to change tooling. A brass locking button and spring-loaded collar allow one-handed tool changes, so you can move quickly between drilling, milling, and facing operations. The R8 body installs in your milling machine spindle, letting you switch holders to reduce downtime between operations.
    R8 Body
    Image of Product. Front orientation. Milling Machine Tool Holders. Quick-Change Milling Machine Tool Holders, R8 Body.
    R8 Taper
    Shank Thread
    Total Indicated Runout
    (TIR) Accuracy
    Gender
    Size
    Spindle
    Overhang
    Material
    Each
    0.0005"Female7/16"-20
    		1 1/8"Steel
    		2012N11000000000
    Tool Holder Stand
    Image of Product. Front orientation. Milling Machine Tool Holders. Quick-Change Milling Machine Tool Holders, Tool Holder Stand.
    Overall
    Ht.
    Wd.
    Dp.
    For No.
    of Tools
    No. of Mounting
    Holes
    Mounting
    Hole Dia.
    Material
    Each
    1 1/2"8 3/4"12 1/4"1043/16"Steel
    		2016N110000000

    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 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

    R8 Taper Collet Chucks

    Image of Specification. Front orientation. Contains Annotated. Milling Machine Collet Chucks. R8 Taper Collet Chucks.
    Hold collets tightly in Bridgeport and other manual machines with R8 spindles to grip tools for milling, drilling, and routing. These chucks let you use the same ER or TG collets as other machines. This reduces the number of collets you need while also giving you a strong grip on your tools. Insert your collet and tighten the nut to clamp your tool in place. Internal threads on the shank let you connect them to your machine’s drawbar system.
    To maximize grip and minimize runout, choose a chuck where your tool diameter falls in the middle of the bit shank size range.
    Collet Stop Screw—Chucks with a collet stop screw set the tool depth in the chuck for consistent, repeatable performance when you change tools.
    Milling Machine Collet Chucks
    Wrenches
    Replacement Nuts
    For Collet
    Type
    For Bit Shank
    Size
    Projection
    Total Indicated Runout
    (TIR) Accuracy
    Material
    Collet Nut
    Type
    Features
    Each
    Each
    Each
    ER-160.019" to 0.406"1.25"0.0001"Hardened Alloy SteelHex NutCollet Stop Screw9523N1300000003215A4410000009502N33000000
    ER-200.039" to 0.551"2"0.0001"Hardened Alloy SteelHex NutCollet Stop Screw9523N140000001721N15000009502N3400000
    ER-250.039" to 0.629"2.5"0.0001"Hardened Alloy SteelSlotted NutCollet Stop Screw9523N150000005699N128000009502N3500000
    ER-320.078" to 0.787"2.25"0.0002"Hardened Alloy SteelSlotted Nut—9523N110000003321A32000009502N1500000
    ER-400.118" to 1.024"2.375"0.0002"Hardened Alloy SteelSlotted Nut—9523N1200000032605A95000009502N1600000
    TG-1000.0469" to 1"3.25"0.0001"Hardened Alloy SteelSlotted NutCollet Stop Screw9523N1600000032605A95000009531N1200000
     

    Deburring Tool Holders

    Image of System. Top orientation. Exploded view. Contains Annotated. Deburring Tool Holders.
    Image of ProductInUse. Top orientation. Contains Annotated. Deburring Tool Holders. Fixed Spring Load.
    Image of ProductInUse. Top orientation. Contains Annotated. Deburring Tool Holders. Adjustable Spring Load.

    Fixed Spring Load

    Adjustable Spring

    Load

    Image of Attribute. For Front Side. Side1 orientation. Contains Annotated. For Front Side.
    Image of Attribute. For Back Side. Side1 orientation. Contains Annotated. For Back Side.
    Image of Attribute. Tool Holder Shown Compressing. Side1 orientation. Contains Annotated.

    For Front Side

    For Back Side

    Tool Holder Shown

    Compressing

    Deburr using your CNC machine without complex programming. These holders grip your deburring tools and extend and retract along the shape of your part to smooth away burs—no overcutting. All you need to do is tell your CNC machine which direction to go. Use them with ball burs.
    To mount these tool holders to your machine, you will need another rotary tool holder or a collet that accepts a 20 mm diameter shank. They should not be held by hydraulic chucks or shrink-fit holders. To install your bur, you'll need an ER-11 collet. Use the spanner wrench (sold separately) to tighten the tool holder nut around the collet.
    These tool holders should not be used with cutting fluid; clear any fluid or debris off your workpiece before deburring.
    Fixed Spring Load—Tool holders with a fixed spring load apply a consistent amount of force. They apply force by pushing down (compression) when working on the front of your part and pulling back (tension) when working on the back of your part, so you can deburr both sides with a single holder.
    Adjustable Spring Load—Tool holders with an adjustable spring load have four levels of deburring force. They only apply force by pushing down (compression) on your part, so they can only deburr the front.
    Light Spring Load—A light spring load has a delicate cutting action, applying about the same amount of pressure as your pinky finger. It is ideal for aluminum, plastics, and other soft materials.
    Medium Spring Load—A medium spring load is best for moderate cutting action, applying about as much pressure as your index finger. Use it when deburring steel.
    Heavy Spring Load—A heavy spring load is best for aggressive cutting—it gives about the same force as pressing down with your palm. Use it on stainless steel and other hard materials.
    Holders
    Spanner Wrenches
    Spring
    Load
    Shank
    Bur
    Nut,
    mm
    Force, N
    Rating
    Overall
    Lg., mm
    For Collet Type
    For Collet
    Size, mm
    Dia.,
    mm
    Lg.,
    mm
    For Collet
    Type
    For Collet
    Size
    For
    Shape
    For Max.
    Shank Dia.
    Dia.
    Lg.
    Compression
    Lg., mm
    Extension
    Lg., mm
    Material
    Each
    Each
    Fixed Spring Load—For Front and Back Side
    3Light130 to 150ER-32, ER-40, ER-50, TG-100202040ER-111/4"Ball1/4"16121010Steel
    		8238N1100000008238N15000000
    5Medium130 to 150ER-32, ER-40, ER-50, TG-100202040ER-111/4"Ball1/4"16121010Steel
    		8238N120000008238N1500000
    7Heavy130 to 150ER-32, ER-40, ER-50, TG-100202040ER-111/4"Ball1/4"16121010Steel
    		8238N130000008238N1500000
     
    Adjustable Spring Load—For Front Side
    2.5, 4, 6.5, 8Light, Medium, Heavy145 to 155ER-32, ER-40, ER-50, TG-100202045ER-111/4"Ball1/4"161210—Steel
    		8238N140000008238N1500000
     
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