Holding Capacity Holding Capacity |
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Rotation Direction Rotation Direction |
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Maximum Clamping Clearance Maximum ClampingClearance |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Component Component |
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 | Clamp |
 | Long Clamp Arm |
 | Short Clamp Arm |
Air-Powered Hold-Down Fixture Clamps
Adjust the air pressure to quickly and consistently clamp and release parts. The arm on these clamps rotates 90° into position over the workpiece and then moves straight down to clamp. Disengage to rotate the arm out of the way and load or unload parts. Also known as swing clamps, they are used with a solid state switch or Reed function switch with M8 male 3-pin connectors. Connect the clamp's ports to a control valve and an air line. Clamps mount with screws.
Clamps with rubber-tipped holding screw are nonmarring. Tip is removable.
For technical drawings and 3-D models, click on a part number.
Body | Holding Screw | Female Air Inlet and Outlet | Mount. Holes | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Clamping Clearance | Vertical Travel During Rotation | Max. Clamping Stroke | Holding Cap., lbs. | Reach | Wd. | Dp. | O'all Ht. | Thread Size | Tip Material | Pipe Size | Thread Size | Thread Type | Mount. Fasteners Included | No. of | Dia. | Material | Each | |
90° Clockwise Rotation | ||||||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/4" | 1 1/4" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | No | 6 | 3/16" | Aluminum | 00000000 | 0000000 |
| 5 1/2" | 3/4" | 1/2" | 130 | 2" | 2" | 3" | 6 3/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | No | 6 | 11/32" | Aluminum | 00000000 | 000000 |
90° Counterclockwise Rotation | ||||||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/4" | 1 1/4" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | No | 6 | 3/16" | Aluminum | 00000000 | 000000 |
| 5 1/2" | 3/4" | 1/2" | 130 | 2" | 2" | 3" | 6 3/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | No | 6 | 11/32" | Aluminum | 00000000 | 000000 |
Threaded Air-Powered Hold-Down Fixture Clamps
Screw these clamps directly into a tapped hole and use air pressure to quickly and consistently clamp and release parts. The arm rotates 90° into position over the workpiece and then moves straight down to clamp. Disengage to rotate the arm out of the way and load or unload parts. Also known as swing clamps, they're used with a solid state switch or Reed function switch with M8 male 3-pin connectors. Connect the clamp's ports to a control valve and an air line. To hold clamps in an untapped hole, use a mounting block (sold separately).
Clamps with rubber-tipped holding screw are nonmarring. Tip is removable.
For technical drawings and 3-D models, click on a part number.
Body | Holding Screw | Female Air Inlet and Outlet | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Clamping Clearance | Vertical Travel During Rotation | Max. Clamping Stroke | Holding Cap., lbs. | Reach | Thread Size | Thread Lg. | O'all Ht. | Thread Size | Tip Material | Pipe Size | Thread Size | Thread Type | Material | Each | |
90° Clockwise Rotation | |||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/8"-16 | 2 7/8" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | Aluminum | 00000000 | 0000000 |
| 5 5/16" | 3/4" | 1/2" | 95 | 1 5/8" | 1 3/4"-12 | 3 1/4" | 6 1/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | Aluminum | 00000000 | 000000 |
90° Counterclockwise Rotation | |||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/8"-16 | 2 7/8" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | Aluminum | 00000000 | 000000 |
| 5 5/16" | 3/4" | 1/2" | 95 | 1 5/8" | 1 3/4"-12 | 3 1/4" | 6 1/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | Aluminum | 00000000 | 000000 |
Hold-Down Fixture Clamps
Tighten the spring-loaded socket head cap screw on these clamps to hold your workpiece from above. Also known as swing clamps, you can rotate the hook out of the way when the screw is loose. Install these clamps in a drilled hole for maximum rigidity.
Add mounting blocks to rotate the clamp’s hook consistently—these blocks have a stop every 90°. They’re also useful if you don’t have an easy mounting location for the fixture clamp.
For technical drawings and 3-D models, click on a part number.
Clamps | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Body | Thread | Drive | Mounting Blocks | ||||||||||
| Max. Clamping Clearance | Holding Capacity, lbs. | Reach | Lg. | Dia. | Size | Lg. | Size | Style | Material | Each | Each | ||
| 7/8" | 4,800 | 11/16" | 1 3/8" | 5/8" | 5/16"-18 | 1 3/4" | 1/4" | Hex | Steel | 0000000 | 000000 | 000000 | 00 |
| 29/32" | 2,200 | 1" | 1 3/8" | 3/4" | 5/16"-18 | 2" | 1/4" | Hex | Black-Oxide Steel | 0000000 | 00000 | 0000000 | 000000 |
| 1 17/32" | 2,700 | 2" | 2 1/2" | 1" | 1/2"-13 | 3" | 3/8" | Hex | Black-Oxide Steel | 0000000 | 00000 | 0000000 | 00000 |
| 1 17/32" | 3,700 | 2" | 2 7/8" | 1 1/4" | 5/8"-11 | 3 1/4" | 1/2" | Hex | Black-Oxide Steel | 0000000 | 000000 | 0000000 | 00000 |
| 1 5/8" | 6,400 | 1" | 2 1/4" | 7/8" | 3/8"-16 | 3" | 5/16" | Hex | Steel | 0000000 | 00000 | 000000 | 00 |
| 1 5/8" | 12,000 | 1" | 2 1/4" | 7/8" | 1/2"-13 | 3" | 3/8" | Hex | Steel | 0000000 | 00000 | 000000 | 00 |
| 1 13/16" | 17,000 | 1 7/16" | 2 3/4" | 1 1/8" | 5/8"-11 | 3 1/2" | 1/2" | Hex | Steel | 0000000 | 00000 | 000000 | 00 |
Clamps | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Body | Thread | Drive | Mounting Blocks | |||||||||||
| Max. Clamping Clearance, mm | Holding Capacity, lbs. | Reach, mm | Lg., mm | Dia., mm | Size | Pitch, mm | Lg., mm | Size | Style | Material | Each | Each | ||
| 23 | 2,200 | 25.5 | 36 | 18 | M8 | 1.25 | 50 | 6 mm | Hex | Black-Oxide Steel | 0000000 | 000000 | 0000000 | 000000 |
| 39 | 2,650 | 51 | 67 | 25 | M12 | 1.75 | 80 | 10 mm | Hex | Black-Oxide Steel | 0000000 | 00000 | 0000000 | 00000 |
| 39 | 3,550 | 51 | 76 | 32 | M16 | 2 | 81 | 14 mm | Hex | Black-Oxide Steel | 0000000 | 000000 | 0000000 | 00000 |
Hydraulic-Powered Hold-Down Fixture Clamps
Use the power of hydraulic fluid to quickly, consistently, and repeatedly clamp and release parts with a greater clamping force than air-powered hold-down fixture clamps. All of these clamps have a threaded body so you can screw them directly into a tapped hole in a fixture. Connect the clamp's ports to a hydraulic control valve and a hydraulic fluid line. To use these clamps, you’ll need a short or long clamp arm (sold separately), or add your own custom clamp arm.
Single-acting clamps use hydraulic fluid to hold material while an automatic spring return releases the material. Clamped material will automatically be released if they lose hydraulic power.
Double-acting clamps use hydraulic fluid to hold as well as release material. They’re more reliable and consistent for high-production applications than single-acting clamps.
Clamps with 90° rotation let clamp arms move into position over your material and then move straight down to clamp. Once the clamp is released, they rotate the clamp arm out of the way so you can remove the material.
Attach clamp arms to the piston on your clamp to hold down material. Short clamp arms have a threaded hole, so you can use a holding screw for a more secure installation. Long clamp arms offer the extra length you need to reach material that is farther away from your clamp. They will, however, reduce the holding capacity of the clamp.
For technical drawings and 3-D models, click on a part number.
Maximum Clamping | Body | Clamping Screw | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Force, lbs. | Clearance | Stroke | Holding Capacity, lbs. | Thread Size | Thread Length | Overall Height | Included | Thread Size | Thread Pitch, mm | Material | Each | |
Single Acting | ||||||||||||
90° Clockwise Rotation | ||||||||||||
| 475 | 3 3/4" | 3/16" | 600 | 1 1/8"-16 | 1 15/16" | 4 15/16" | No | M6 | 1 | Black-Oxide Steel | 0000000 | 0000000 |
| 1,100 | 4 3/8" | 3/8" | 1,400 | 1 3/8"-18 | 2 3/8" | 5 15/16" | No | M8 | 1.25 | Black-Oxide Steel | 0000000 | 000000 |
| 2,400 | 5 3/8" | 1/2" | 3,150 | 1 7/8"-16 | 3 3/16" | 7 1/2" | No | M10 | 1.5 | Black-Oxide Steel | 0000000 | 000000 |
| 4,000 | 4 7/8" | 7/16" | 5,500 | 2 1/2"-16 | 2 11/16" | 7 5/16" | Yes | __ | __ | Black-Oxide Steel | 0000000 | 00000000 |
90° Counterclockwise Rotation | ||||||||||||
| 475 | 3 3/4" | 3/16" | 600 | 1 1/8"-16 | 1 15/16" | 4 15/16" | No | M6 | 1 | Black-Oxide Steel | 0000000 | 000000 |
| 1,100 | 4 3/8" | 3/8" | 1,400 | 1 3/8"-18 | 2 3/8" | 5 15/16" | No | M8 | 1.25 | Black-Oxide Steel | 0000000 | 000000 |
| 2,400 | 5 3/8" | 1/2" | 3,150 | 1 7/8"-16 | 3 3/16" | 7 1/2" | No | M10 | 1.5 | Black-Oxide Steel | 0000000 | 000000 |
| 4,000 | 4 7/8" | 7/16" | 5,500 | 2 1/2"-16 | 2 11/16" | 7 5/16" | Yes | __ | __ | Black-Oxide Steel | 0000000 | 00000000 |
Straight Pull Rotation | ||||||||||||
| 475 | 3 3/4" | 3/16" | 600 | 1 1/8"-16 | 1 15/16" | 4 15/16" | No | M6 | 1 | Black-Oxide Steel | 0000000 | 000000 |
| 1,100 | 4 3/8" | 3/8" | 1,400 | 1 3/8"-18 | 2 3/8" | 5 15/16" | No | M8 | 1.25 | Black-Oxide Steel | 0000000 | 000000 |
| 2,400 | 5 3/8" | 1/2" | 3,150 | 1 7/8"-16 | 3 3/16" | 7 1/2" | No | M10 | 1.5 | Black-Oxide Steel | 0000000 | 000000 |
| 4,000 | 4 7/8" | 7/16" | 5,500 | 2 1/2"-16 | 2 11/16" | 7 5/16" | Yes | __ | __ | Black-Oxide Steel | 0000000 | 00000000 |
Double Acting | ||||||||||||
90° Clockwise Rotation | ||||||||||||
| 475 | 3 7/8" | 5/16" | 600 | 1 1/8"-16 | 1 15/16" | 4 15/16" | No | M6 | 1 | Black-Oxide Steel | 0000000 | 000000 |
| 1,100 | 4 3/8" | 3/8" | 1,400 | 1 3/8"-18 | 2 3/8" | 5 15/16" | No | M8 | 1.25 | Black-Oxide Steel | 0000000 | 000000 |
| 2,400 | 5 3/8" | 1/2" | 3,150 | 1 7/8"-16 | 3 3/16" | 7 1/2" | No | M10 | 1.5 | Black-Oxide Steel | 0000000 | 000000 |
| 4,000 | 4 7/8" | 7/16" | 5,500 | 2 1/2"-16 | 2 11/16" | 7 5/16" | Yes | __ | __ | Black-Oxide Steel | 0000000 | 00000000 |
90° Counterclockwise Rotation | ||||||||||||
| 475 | 3 7/8" | 5/16" | 600 | 1 1/8"-16 | 1 15/16" | 4 15/16" | No | M6 | 1 | Black-Oxide Steel | 0000000 | 000000 |
| 1,100 | 4 3/8" | 3/8" | 1,400 | 1 3/8"-18 | 2 3/8" | 5 15/16" | No | M8 | 1.25 | Black-Oxide Steel | 0000000 | 000000 |
| 2,400 | 5 3/8" | 1/2" | 3,150 | 1 7/8"-16 | 3 3/16" | 7 1/2" | No | M10 | 1.5 | Black-Oxide Steel | 0000000 | 000000 |
| 4,000 | 4 7/8" | 7/16" | 5,500 | 2 1/2"-16 | 2 11/16" | 7 5/16" | Yes | __ | __ | Black-Oxide Steel | 0000000 | 00000000 |
Straight Pull Rotation | ||||||||||||
| 475 | 3 7/8" | 5/16" | 600 | 1 1/8"-16 | 1 15/16" | 4 15/16" | No | M6 | 1 | Black-Oxide Steel | 0000000 | 000000 |
| 1,100 | 4 3/8" | 3/8" | 1,400 | 1 3/8"-18 | 2 3/8" | 5 15/16" | No | M8 | 1.25 | Black-Oxide Steel | 0000000 | 000000 |
| 2,400 | 5 3/8" | 1/2" | 3,150 | 1 7/8"-16 | 3 3/16" | 7 1/2" | No | M10 | 1.5 | Black-Oxide Steel | 0000000 | 000000 |
| 4,000 | 4 7/8" | 7/16" | 5,500 | 2 1/2"-16 | 2 11/16" | 7 5/16" | Yes | __ | __ | Black-Oxide Steel | 0000000 | 00000000 |
