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    22 Products

    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.
    Lever Actuator
    Image of Product. Front orientation. Collet Fixtures, Lever Actuator.
    Lever fixtures have a handle that can be indexed to any position—no tools required. They’re often used for quickly swapping workpieces in and out, when a simple clamping mechanism is more important than consistent holding force. These fixtures keep the collet stationary while their sleeve clamps. Made from cast iron, they dampen vibration better than steel fixtures, though they’re less durable.
    Mounting
    Slots
    For Collet
    Type
    For Max. Workpiece
    Dia.
    Through-Hole
    Dia.
    Lg.
    Wd.
    Ht.
    Material
    No.
    of
    Wd.
    Mounting Position
    Power
    Source
    Each
    5C1 1/16"1 1/16"3 3/4"5"4"Enamel-Coated Cast Iron411/16"Horizontal, VerticalManual00000000000000
    Collet Nut Actuator
    Image of Product. Front orientation. Collet Fixtures. Collet Fixtures, Collet Nut Actuator.
    Collet nut fixtures convert ER collets—typically used to hold tool bits—into holders for cylindrical workpieces. The tapered, slit design of the collet distributes clamping force evenly around a workpiece. This creates a stable, consistent grip that keeps your workpiece from shifting, even under 5-axis machining forces. These fixtures are made of steel to withstand the high clamping forces and frequent cycles of production environments.
    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
    Each
    ER-163/8"7/16"2 3/4"2 1/2"Black-Oxide Steel41/4"2 1/8"Horizontal, VerticalManual00000000000000
    ER-201/2"7/16"2 3/4"2 1/2"Black-Oxide Steel41/4"2 1/8"Horizontal, VerticalManual0000000000000
    ER-255/8"7/16"2 3/4"2 1/2"Black-Oxide Steel41/4"2 1/8"Horizontal, VerticalManual0000000000000
    ER-255/8"11/16"5"3"Black-Oxide Steel47/16"4"Horizontal, VerticalManual0000000000000
    ER-3213/16"11/16"5"3"Black-Oxide Steel47/16"4"Horizontal, VerticalManual0000000000000
    ER-401"11/16"5"3"Black-Oxide Steel47/16"4"Horizontal, VerticalManual0000000000000
    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
    5C1 1/16"1 3/16"5"3 1/2"Black-Oxide Steel63/8"4 1/8"Horizontal, VerticalManualSocket Wrench0000000000000000
    16C1 5/8"1 13/16"5"4 1/2"Black-Oxide Steel63/8"4 1/8"Horizontal, VerticalManualSocket Wrench000000000000000
    3J1 3/4"1 15/16"5"4"Black-Oxide Steel63/8"4 1/8"Horizontal, VerticalManualSocket Wrench000000000000000

    Stationary Clamping Jaw Fixtures

    Mount these fixtures to a milling machine, drill press, or other flat surface and use the jaws to grip workpieces. Their low-profile design maximizes tool clearance, which helps you machine efficiently. The jaws are precision ground to tight tolerances for repeatable centering that’s accurate within 0.02 mm. These fixtures are self-centering—they use scroll actuation, which means that all jaws move in unison to center the workpiece as they close.
    Each fixture comes with reversible jaws, which you can install for either an inside or outside grip. Use the included wrench to open or close the jaws.
    3 Reversible Jaws
    Image of Product. Front orientation. Jaw Fixtures. Stationary Clamping Jaw Fixtures, 3 Jaws.
    Fixtures with three jaws are best for gripping round workpieces.
    For
    Workpiece
    Base
    Mounting
    Slots
    OD
    ID
    Ctr. Through-Hole
    Dia.
    Dia.
    Ht.
    Dia.
    Ht.
    Material
    No.
    of
    Wd.
    Includes
    Each
    5/16" to 6 5/16" (8 to 160 mm)1 7/8" to 5 29/32" (48 to 150 mm)1 25/32" (45 mm)6 11/16" (170 mm)1 9/16" (40 mm)8 21/32" (220 mm)11/16" (18 mm)Steel41/2" (13 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench0000000000000000
    7/16" to 7 7/8" (11 to 200 mm)2 7/16" to 7 1/2" (62 to 190 mm)2 3/8" (60 mm)8 1/4" (210 mm)1 25/32" (45 mm)10 5/8" (270 mm)25/32" (20 mm)Steel41/2" (13 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench000000000000000
    15/32" to 9 27/32" (12 to 250 mm)2 27/32" to 9 7/16" (72 to 240 mm)3 5/32" (80 mm)10 1/32" (255 mm)2 3/32" (53 mm)12 13/32" (315 mm)25/32" (20 mm)Steel45/8" (16 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench000000000000000
    19/32" to 11 13/16" (15 to 300 mm)3 3/8" to 11 13/32" (86 to 290 mm)4 1/8" (105 mm)12" (305 mm)2 9/32" (58 mm)14 9/16" (370 mm)7/8" (22 mm)Steel411/16" (18 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench000000000000000
    4 Reversible Jaws
    Image of Product. Front orientation. Jaw Fixtures. Stationary Clamping Jaw Fixtures, 4 Jaws.
    Fixtures with four jaws have more holding power than those with three jaws, so they’re often used on square or rectangular workpieces.
    For
    Workpiece
    Base
    Mounting
    Slots
    OD
    ID
    Ctr. Through-Hole
    Dia.
    Lg.
    Wd.
    Ht.
    Lg.
    Wd.
    Ht.
    Material
    No.
    of
    Wd.
    Includes
    Each
    5/32" to 5 1/32" (4 to 128 mm)2 5/32" to 5 1/32" (55 to 128 mm)1 19/32" (40 mm)6 1/2" (165 mm)6 1/2" (165 mm)1 17/32" (39 mm)8 15/32" (215 mm)6 1/2" (165 mm)11/16" (18 mm)Steel211/16" (18 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench0000000000000000
    3/16" to 6 3/8" (5 to 162 mm)2 7/16" to 6 3/8" (62 to 162 mm)2 5/32" (55 mm)7 7/8" (200 mm)7 7/8" (200 mm)1 25/32" (45 mm)9 27/32" (250 mm)7 7/8" (200 mm)25/32" (20 mm)Steel211/16" (18 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench000000000000000
    1/4" to 7 7/8" (6 to 200 mm)2 27/32" to 7 7/8" (72 to 200 mm)2 3/4" (70 mm)9 27/32" (250 mm)9 27/32" (250 mm)1 31/32" (50 mm)12 7/32" (310 mm)9 27/32" (250 mm)7/8" (22 mm)Steel211/16" (18 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench000000000000000
    13/32" to 10 7/16" (10 to 265 mm)3 9/16" to 10 7/16" (90 to 265 mm)3 15/16" (100 mm)12 7/32" (310 mm)12 7/32" (310 mm)2 3/8" (60 mm)14 31/32" (380 mm)12 7/32" (310 mm)1" (25 mm)Steel27/8" (22 mm)One Set of Hardened Reversible Jaws, One Chuck Wrench000000000000000

    Indexing Jaw-Chuck Fixtures

    More flexible than indexing collet fixtures for workholding—these fixtures hold a wide range of part sizes without swapping out collets. Also known as spindexers, they’re often used to drill hole patterns, shape punches, and sharpen cutting tools. With three jaws that move together, the chuck auto-centers parts and even grips workpieces that are out-of-round or have rough surfaces. Ground to tight tolerances, the base sits flat when mounted to machine tables in either a horizontal or vertical position, preventing misalignment. With a hole through their center, they have no trouble holding long parts too. The chuck comes off, so you can also use them as rotary tables.
    3 Reversible Jaws
    Image of Product. Front orientation. Jaw Fixtures. Indexing Jaw-Chuck Fixtures.
    Fixtures with three jaws are best for gripping round workpieces.
    Tailstocks—Support long workpieces to improve stability during indexing and machining.
    Jaw Fixtures
    Tailstocks
    For
    Workpiece
    Overall
    Base
    Tolerance
    Mounting
    Slots
    OD
    ID
    Index Increments
    Lathe Chuck
    Dia.
    Ctr. Through-Hole
    Dia.
    Ctr.
    Ht.
    Lg.
    Wd.
    Ht.
    Lg.
    Wd.
    Ht.
    Parallel
    Squareness
    Material
    No.
    of
    Wd.
    Includes
    Each
    Each
    13/32" to 6 5/32" (10 to 155 mm)5/32" to 1 21/32" (4 to 42 mm)15°, 30°, 45°, 60°, 90°, 120°, 180°6"1 3/4"5"9 7/8"8 3/4"10 7/16"8 5/8"5 7/8"9 1/4"0.0002"0.0002"Steel55/8"One Chuck Wrench000000000000000000000000000000
    13/32" to 7 3/32" (10 to 180 mm)5/32" to 2 7/16" (4 to 62 mm)15°, 30°, 45°, 60°, 90°, 120°, 180°8"2 1/2"6 1/4"12 1/4"9 9/16"11 5/8"8 7/8"6 1/4"11 1/4"0.0002"0.0002"Steel55/8"One Chuck Wrench0000000000000000000000000000
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