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    13 Products

    3J Lathe Collets

    Image of Product. Front orientation. Lathe Collets. 3J Lathe Collets.
    When installed into a 3J collet chuck or holder, these collets securely grip round workpieces. They provide a stronger hold on small workpieces than a standard lathe chuck. All have external threads.
    Collet
    Size
    Total Indicated Runout
    (TIR) Accuracy
    Workpiece Dia.
    Tolerance
    Body
    Dia.
    Overall
    Lg.
    External Thread
    Size
    Material
    Each
    Round Face
    3/8"0.0008"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A1110000000
    1/2"0.0011"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A112000000
    5/8"0.0011"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A113000000
    3/4"0.0015"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A114000000
    7/8"0.0015"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A115000000
    1"0.0015"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A121000000
    1 1/8"0.0015"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A122000000
    1 1/4"0.0015"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A123000000
    1 1/2"0.0015"-0.004" to 0"2"3 3/4"1.988"-20Steel3811A124000000
     

    Machine-Your-Own 3J Lathe Collets

    Image of Product. Front orientation. Lathe Collets. Machine-Your-Own 3J Lathe Collets.
    When installed into a 3J collet chuck or holder, these collets can securely grip workpieces. Also known as emergency collets, their machinable face allows you to bore an opening to exactly the size and shape you need. All have external threads.
    Max. Bore
    Dia.
    Body
    Dia.
    Overall
    Lg.
    Face Pilot
    Hole Dia.
    External Thread
    Size
    Material
    Each
    Machine-Your-Own Face
    1 3/4"2"3 3/4"1/16"1.988"-20Hardened Steel3811A1610000000
     

    High-Density Air/Hydraulic-Operated Collet Fixtures

    Image of ProductInUse. Four Fixtures (Each Sold Separately). Front orientation. Collet Fixtures. High-Density Air/Hydraulic-Operated Collet Fixtures.

    Four Fixtures (Each Sold Separately)

    Image of Product. Front orientation. Collet Fixtures. High-Density Air/Hydraulic-Operated Collet Fixtures, Fixed Length—Flange Mount.

    Fixed Length—Flange Mount

    Push a button to clamp or release multiple workpieces on your milling machine or drill press. To create a high-density setup, mount these fixtures and join them together using two connector bushings (sold separately) for each fixture you want to add. These fixtures have a through hole for clamping long workpieces.
    Air or hydraulic pressure opens and closes the collets (not included). A good choice for heavy machining, these fixtures provide a tighter hold than you can achieve with manual power. You can operate multiple fixtures with a single valve (not included) and two hoses—one for supply and one for return. All are double acting, so they need air or hydraulic pressure both to open and close. This means that the workpiece stays locked in place even if you lose pressure. Clamping force depends on the air or hydraulic pressure of your system.
    Top-Locking Screw—Fixtures with a top-locking screw allow for direct access to make adjustments without disassembling your setup.
    Fixed Length Collet Fixture—Fixed-length fixtures, also known as dead-length fixtures, keep the collet stationary while they clamp onto a workpiece. Use them to precisely machine holes, slots, and contours exactly where you need them. Since these fixtures position workpieces consistently, they’re often used for high-volume production runs. You can also rotate them on an indexer or rotary table without losing your reference point.
    Collet Fixtures
    Connectors
    Mounting
    Holes
    Port
    For Collet
    Type
    For No.
    of Collets
    For Max. Workpiece
    Dia.
    Through-Hole
    Dia.
    Lg.
    Wd.
    Ht.
    Max. Hydraulic
    Pressure, psi
    Max. Hydraulic-Powered
    Clamping Force, psi
    Material
    No.
    of
    Dia.
    No. of
    Ports
    Pipe
    Size
    Thread
    Type
    Thread
    Gender
    Includes
    Each
    Each
    Collet Fixtures with Top-Locking Screw
     
    Fixed Length—Flange Mount
    3J11 3/4"1 15/16"4"4"3 3/4"5,0009,500Steel43/8"27/16UNF
    		FemaleCollet Wrench3115N190000000003115N12000000
     

    Collet Fixtures

    Pair these fixtures with collets to tightly grip workpieces for machining. You can mount them on milling machines, drill presses, and other work surfaces. However, they’re not for use with lathes, grinders, or high-speed rotary tables. All have a through hole to accommodate long workpieces.
    Square Drive Actuator
    Image of Product. Front orientation. Collet Fixtures. Collet Fixtures, Square Drive Actuator.
    Square-drive fixtures are designed for precise, repeatable workholding with consistent clamping force. They keep the collet stationary while their sleeve clamps. Made of steel, these fixtures are stronger and more wear resistant than cast iron fixtures, and they can hold up to higher clamping forces. They’re precision machined for accuracy. Use the included socket wrench to clamp and unclamp your workpiece or use a calibrated torque wrench to fine-tune the clamping force.
    Mounting
    Holes
    For Collet
    Type
    For Max. Workpiece
    Dia.
    Through-Hole
    Dia.
    Dia.
    Ht.
    Material
    No.
    of
    Dia.
    Bolt Circle
    Dia.
    Mounting Position
    Power
    Source
    Includes
    Each
    3J1 3/4"1 15/16"5"4"Black-Oxide Steel63/8"4 1/8"Horizontal, VerticalManualSocket Wrench3174A33000000000
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