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    14 Products

    R8 Collets

    Image of Product. Front orientation. Milling Machine Collets. R8 Collets.
    Grip cutting tools in the R8 taper spindle of your Bridgeport or other milling machine. These collets thread onto your machine’s drawbar, pulling them into the spindle so they can clamp tightly around your bit.
    The lower the runout, the higher the accuracy and the longer the tool life.
    0.0008" Total Indicated Runout (TIR) Accuracy—An accuracy of 0.0008” works well for roughing and heavy material removal, where tight tolerances aren't critical.
    Collet
    Size, mm
    ID Tolerance
    Body
    Dia.
    Overall
    Lg.
    Internal
    Thread Size
    Each
    Hardened Steel—0.0002" Total Indicated Runout (TIR) Accuracy
    20-0.004" to 0"0.95"4.089"7/16"-20
    		3257A59000000
     
    Hardened Steel—0.0008" Total Indicated Runout (TIR) Accuracy
    200" to 0.001"0.95"4.134"7/16"-20
    		3257A33400000
     

    ER Collets

    Image of System. Side1 orientation. CrossSection view. Contains Annotated. Milling Machine Collets. ER Collets.
    Image of Product. Front orientation. Milling Machine Collets. ER Collets.
    The most widely used type of collet, these collets hold cutting tools in ER collet chucks for milling, drilling, and routing. Spring slots clamp evenly around the shank to minimize runout for clean, accurate cuts and long tool life. The slots flex to grip slightly undersized shanks too, so you don't need an exact match for each cutting tool in your lineup. You can also use these collets in ER collet fixtures and custom setups to keep small round parts centered.
    52100 Alloy Steel—Hardened 52100 alloy steel collets are made from the same tough material used to make bearings. They’re more wear-resistant than basic spring steel collets but will wear faster than hardened chrome-moly steel collets if you change bits frequently.
    Chrome-Moly Steel—Hardened chrome-moly steel collets are more wear-resistant than hardened 52100 alloy steel collets. They hold their shape better over time and have lower runout, even with frequent bit changes. Often used for high-volume production runs, they stand up to high-speed, high-force machining in any material.
    Collet
    Size, mm
    Grip Range,
    mm
    Total Indicated Runout
    (TIR) Accuracy
    ID Tolerance
    Max. Body
    Dia.
    Overall
    Lg.
    Specs. Met
    Each
    ER-32
     
    Hardened 52100 Alloy Steel
    2019 to 200.0002"-0.0004" to 0"1.3"1.57"DIN 6499-B, ISO 15488 Form B3321A331000000
     
    Hardened Chrome-Moly Steel
    2019 to 200.0002"-0.0001" to 0.0001"1.3"1.57"DIN 6499-B, ISO 15488 Form B3321A14600000
     
    ER-40
     
    Hardened 52100 Alloy Steel
    2019 to 200.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3800000
     
    ER-50
     
    Hardened 52100 Alloy Steel
    2018 to 200.0002"-0.0004" to 0"2.05"2.36"DIN 6499-B, ISO 15488 Form B9623N1700000
     

    ER Coolant Control Collets

    Image of System. Side1 orientation. CrossSection view. Contains Annotated. Milling Machine Collets. ER Coolant Control Collets.
    Image of ProductInUse. Sealed Shown in Use. Front orientation. Milling Machine Collets. ER Coolant Control Collets, Sealed Coolant Delivery Collet.
    Image of Product. Sealed. Front orientation. Milling Machine Collets. ER Coolant Control Collets, Sealed Coolant Delivery Collet.

    Sealed

    Shown in Use

    Sealed

    Made with high-performance machining in mind—these collets not only grip your cutting tool but also direct coolant to the tool's cutting edge. They have coolant channels designed to work with through-spindle coolant (TSC) systems to clear chips and reduce heat from friction, resulting in clean cuts and long tool life. Place them directly into your ER collet holder, no need to fuss with special collet nuts, coolant rings, or repositioning hoses and nozzles with every setup change.
    You get the benefits of using an ER collet, too. Spring slots clamp evenly around the shank to minimize runout for accurate cuts. Keep in mind, these collets must form a tight seal around the tool shank for proper coolant delivery, so match the shank size to the collet size exactly for the best results.
    Sealed Coolant Delivery Collet—Sealed collets run coolant through the cutting tool, so they only work with tools that have coolant holes. Since the coolant runs through the tool, they’re a better choice for deep-hole drilling and high-speed machining than collets with angled ports. Steel seals are built into their body, so they withstand higher pressure and last longer than collets with rubber seals.
    Chrome-Moly Steel—Hardened chrome-moly steel collets are more wear-resistant than hardened 52100 alloy steel collets. They hold their shape better over time and have lower runout, even with frequent bit changes. Often used for high-volume production runs, they stand up to high-speed, high-force machining in any material. Their maximum coolant pressure is higher than 52100 alloy steel collets, so they’re a better choice for deep-hole drilling and turning operations in CNC Swiss lathes.
    Collet
    Size, mm
    Grip Range,
    mm
    Total Indicated Runout
    (TIR) Accuracy
    ID Tolerance
    Max. Coolant
    Pressure, psi
    Max. Body
    Dia.
    Overall
    Lg.
    Specs. Met
    Each
    ER-32—Sealed
     
    Hardened Chrome-Moly Steel
    2019.5 to 200.0002"-0.0001" to 0.0001"2,9001.3"1.57"DIN 6499-B, ISO 15488 Form B3321A207000000
     

    5C Lathe Collets

    Image of Product. Front orientation. Contains Inset. Lathe Collets. 5C Lathe Collets, Round Face.

    Round Face

    These collets tightly grip workpieces when installed into a 5C collet chuck or holder. They provide a stronger hold on small workpieces than a standard lathe chuck.
    Collet
    Size, mm
    Total Indicated Runout
    (TIR) Accuracy
    Workpiece Dia.
    Tolerance
    Body
    Dia.
    Overall
    Lg.
    Internal Thread
    Size
    External Thread
    Size
    Material
    Each
    Round Face
    200.0015"-0.004" to 0"1 1/4"3.27"1.041"-241.238"-20Steel
    		3223A674000000
     

    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
     

    TG Collets

    Image of System. Side1 orientation. CrossSection view. Contains Annotated. Milling Machine Collets. TG Collets.
    Image of Product. Front orientation. Milling Machine Collets. TG Collets.
    Clamp cutting tools in TG collet chucks for rough milling and drilling. These collets have a steep taper angle for a tighter, more stable grip than ER collets. This design gives them the strength to handle large tools and aggressive cuts. However, their grip range is smaller than ER collets, so you’ll need more collets to hold the same range of shank sizes. Use them in CNC machines and drill presses.
    Collet
    Size, mm
    Grip Range,
    mm
    Total Indicated Runout
    (TIR) Accuracy
    ID Tolerance
    Max. Body
    Dia.
    Overall
    Lg.
    Each
    TG-100
     
    Hardened Steel
    2019.6 to 200.0005"-0.0004" to 0"1.38"2.38"32605A131000000
     
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