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    40 Products

    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.
    Collet
    Size
    Grip Range
    Total Indicated Runout
    (TIR) Accuracy
    ID Tolerance
    Max. Body
    Dia.
    Overall
    Lg.
    Specs. Met
    Each
    ER-40
     
    Hardened 52100 Alloy Steel
    1/8"0.086" to 0.125"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N11000000
    5/32"0.117" to 0.156"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1200000
    3/16"0.148" to 0.187"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1300000
    7/32"0.179" to 0.218"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1400000
    1/4"0.211" to 0.250"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1500000
    9/32"0.242" to 0.281"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1600000
    5/16"0.273" to 0.312"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1700000
    11/32"0.304" to 0.343"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1800000
    3/8"0.336" to 0.375"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N1900000
    7/16"0.398" to 0.437"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2100000
    1/2"0.461" to 0.500"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2200000
    17/32"0.492" to 0.531"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2300000
    9/16"0.523" to 0.562"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2400000
    5/8"0.586" to 0.625"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2500000
    21/32"0.617" to 0.656"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2600000
    3/4"0.711" to 0.750"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2700000
    25/32"0.742" to 0.781"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2800000
    7/8"0.836" to 0.875"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N2900000
    1"0.961" to 1"0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3100000
    3 mm2 mm to 3 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3200000
    4 mm3 mm to 4 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3300000
    5 mm4 mm to 5 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3400000
    8 mm7 mm to 8 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3500000
    10 mm9 mm to 10 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3600000
    12 mm11 mm to 12 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3700000
    20 mm19 mm to 20 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3800000
    25 mm24 mm to 25 mm0.0002"-0.0004" to 0"1.61"1.81"DIN 6499-B, ISO 15488 Form B9498N3900000
     

    ER Collet Sets

    Image of Product. Collet Set with Wood Stand. Front orientation. Milling Machine Collets. ER Collet Sets, Wood Stand.

    Collet Set with Wood

    Stand

    Keep a set of ER collets on hand to hold cutting tools for milling, drilling, and routing. They’re the most versatile and widely used type of collet. 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.
    No. of
    Pieces
    Collet Sizes Included
    Total Indicated Runout
    (TIR) Accuracy
    ID Tolerance
    Approx. Dia. Compression
    (Collet Size)
    Max. Body
    Dia.
    Overall
    Lg.
    Container
    Type
    Specs. Met
    Each
    ER-40 Collet
     
    Hardened 52100 Alloy Steel
    131", 1/8"-3/4" (increments of 1/16"), 7/8"0.0002"-0.0004" to 0"1/32" (1/8" to 3/4")1.61"1.81"Wood StandDIN 6499-B, ISO 15488 Form B9411N340000000
    234 mm-26 mm (increments of 1 mm)0.0002"-0.0004" to 0"1/32" (4 mm to 26 mm)1.61"1.81"Wood StandDIN 6499-B, ISO 15488 Form B9411N35000000
     

    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
     

    ER Collet Nuts

    Image of System. Side1 orientation. Contains Annotated. Collet Nuts. ER Collet Nuts.
    Image of Product. Collet Nut with Slotted Drive. Front orientation. Collet Nuts. ER Collet Nuts.
    Image of Product. Ultra-Low-Friction Bearing Collet Nut with Slotted Drive. Front orientation. Collet Nuts. ER Collet Nuts.
    Image of Product. Miniature Collet Nut. Front orientation. Collet Nuts. ER Collet Nuts.
    Image of Product. Collet Nut with Hex Drive. Front orientation. Collet Nuts. ER Collet Nuts.
    Image of Product. Ultra-Low-Friction Bearing Collet Nut with External Round Drive. Front orientation. Collet Nuts. ER Collet Nuts.

    Collet Nut with

    Slotted Drive

    Ultra-Low-Friction

    Bearing Collet Nut

    with Slotted Drive

    Miniature

    Collet Nut

    Collet Nut with Hex

    Drive

    Ultra-Low-Friction

    Bearing Collet Nut

    with External

    Round Drive

    Secure ER collets inside collet chucks and fixtures. Tightening these nuts squeezes the collet around the cutting tool to clamp it firmly in place.
    Low Friction—Low-friction coated nuts tighten more smoothly than standard collet nuts for even clamping and longer tool life. Replace them when the coating wears away.
    Ultra Low Friction—Ultra-low-friction bearing nuts are often used in the highest quality chucks. Instead of a coating that can wear away, these nuts have internal ball bearings for the smoothest and most uniform clamping. The result is a stronger grip, higher accuracy, and longer tool life compared to coated collet nuts. You can take them apart and clean them rather than replacing them.
    External Round Drive—External round nuts don’t have slots that trap coolant or chips. They spin with less resistance than other nuts and excel in high-speed machining operations. Also known as smooth collet nuts.
    Nuts
    Wrenches
    Drive
    For Collet
    Type
    Thread Size
    Style
    Size,
    mm
    Max. Rotation
    Speed, rpm
    Dia.,
    mm
    Ht.,
    mm
    Recommended Tightening
    Torque, ft·lbf
    Material
    Specs. Met
    Each
    Each
    Collet Nuts
    ER-40M50 × 1.5 mmSlotted
    		5725,0006327.5130Hardened SteelISO 15488 Form B9615N2100000032605A95000000
     
    Low-Friction Coated Collet Nuts
    ER-40M50 × 1.5 mmSlotted
    		56.825,0006326130Hardened SteelISO 15488 Form B9615N370000032605A9500000
     
    Ultra-Low-Friction Bearing Collet Nuts
    ER-40M50 × 1.5 mmExternal Round6225,0006225125Hardened Nickel Chrome-Moly SteelISO 15488 Form B9615N46000009506N35000000
    ER-40M50 × 1.5 mmSlotted
    		5725,0006225125Hardened Nickel Chrome-Moly SteelISO 15488 Form B9615N450000032605A9500000
     
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