Air-Powered Machine Vises
Compressed air controlled by a foot pedal allows hands-free operation. Step on the pedal to instantly close the moving jaw; step again to release it. Use these vises in production applications with frequent insertion and removal of workpieces on Bridgeport-style milling machines and drill presses. Vises with a jaw height of 1 1/4", 1 5/16", and 2 1/2" can also be used on surface grinders.
To calculate the gripping force on your workpiece, multiply your inlet air pressure by the gripping force factor. Add an air regulator to control force.
Single-acting vises require the jaw to be manually set to the desired position before use, so these vises are best for repetitive clamping of consistent workpiece sizes. Once the jaw is set, activating the air pressure will move the jaw up to 5/8" to clamp. When air pressure is released, a spring return inside the air cylinder returns the jaw to the set position.
Double-acting vises use air pressure to open and close the jaws without manual adjustment, making these vises a good choice when clamping workpieces of varying size.
Jaw | Air Inlet | Mounting Holes | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wd. | Ht. | Max. Opening | Pipe Size  | Thread Type | Gender | Maximum Pressure, psi | Gripping Force Factor | Overall Ht. | Body Lg. | Mounting Fasteners Included | No. of | Dia. | Each | |
Fixed Base | ||||||||||||||
Single Acting | ||||||||||||||
| 3" | 1 1/4" | 3 1/8" | 1/4 | NPSM | Male | 120 | 15 | 5 3/8" | 10 1/4" | No | 4 | 17/32" | 0000000 | 0000000 |
| 4" | 1 5/16" | 4 5/8" | 1/4 | NPSM | Male | 120 | 15 | 5 3/8" | 13 1/2" | No | 4 | 21/32" | 0000000 | 000000 |
Double Acting | ||||||||||||||
| 3" | 1 1/4" | 3 1/8" | 1/4 | NPSM | Male | 120 | 15 | 5 3/8" | 13 11/16" | No | 4 | 17/32" | 0000000 | 000000 |
| 4" | 1 5/16" | 5" | 1/4 | NPSM | Male | 120 | 15 | 5 3/8" | 18 1/4" | No | 4 | 21/32" | 0000000 | 000000 |
| 6" | 2 1/2" | 7 3/8" | 1/4 | NPSM | Male | 120 | 19 | 6 17/32" | 25 5/8" | No | 4 | 11/16" | 0000000 | 00000000 |
Vacuum Workholding Plates
Also known as vacuum chucks, these plates secure thin and flexible parts that can’t be held with vises or clamps for milling, drilling, routing, and finishing operations. Connect the system to your shop’s compressed air supply and it's ready to use. For applications requiring only part of the plate surface, use the gasket cord to seal off the area.
Risers, also known as vacuum pods, raise the workpiece off the vacuum table to give the cutting tool better access. Suction transfers from the table through the top of the riser, so to get a firm hold the workpiece must make contact with the full top length and width of the riser.
Retracting stop pins let you repeatably locate parts on your vacuum table. After positioning your workpiece against these pins, turn on the vacuum and the stop pins retract, dropping out of the way so the cutting tool has full access to the workpiece.
Side stops fit into the grooves of the vacuum plate to help you repeatably position material. They can be removed from the plate after the vacuum is turned on to give the cutting tool more access to the workpiece.
Air Inlet | Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Max. Vacuum, in. of Hg | Recommended Operating Air Pressure, psi | Air Consumption | Connection Type | Quick-Disconnect Shape | Coupling Size | Gender | No. of | Dia. | Ctr.-to-Ctr. | Includes | Each | |
| 17 3/4" | 9 1/2" | 1" | 27.9 | 58-110 | 3.4 scfm @ 58 psi | Hose | Industrial | 1/4 | Male | 2 | 1/2" | 15 3/8" | Vacuum Generator, 15 ft. Vacuum Hose, 10 ft. EPDM Foam Gasketing | 0000000 | 000000000 |
| 17 3/4" | 12" | 1" | 27.9 | 58-110 | 3.4 scfm @ 58 psi | Hose | Industrial | 1/4 | Male | 2 | 1/2" | 15 3/8" | Vacuum Generator, 15 ft. Vacuum Hose, 15 ft. EPDM Foam Gasketing | 0000000 | 00000000 |
| 17 3/4" | 14" | 1" | 27.9 | 58-110 | 3.4 scfm @ 58 psi | Hose | Industrial | 1/4 | Male | 2 | 1/2" | 15 3/8" | Vacuum Generator, 15 ft. Vacuum Hose, 15 ft. EPDM Foam Gasketing | 0000000 | 00000000 |
Base | |||||||
|---|---|---|---|---|---|---|---|
| Dia. | Retracted Ht. | Extended Ht. | Lg. | Wd. | Material | Each | |
| 2 3/8" | 1.345" | 1.971" | 3" | 3" | Aluminum | 0000000 | 0000000 |
| Lg. | Wd. | Ht. | Material | Each | |
| 2 1/8" | 1 3/4" | 1/2" | Aluminum | 0000000 | 000000 |
Repair Kits for Kurt® Milling-Machine Vises
Maintain your vise by replacing seals, springs, and other commonly worn parts.
| For Manufacturer Model Number | Number of Pieces | Includes | Each | |
| 3400, 3400V, 3410V | 10 | Internal Brush Seals (2) O-Rings (2) Segment (1) Spiral Retaining Rings (2) Thrust Bearing (1) Thrust Bearing Washers (2) | 0000000 | 000000 |
| 3600V, 3610V | 10 | Backer Ring (1) Internal Brush Seals (2) O-Ring (1) Segment (1) Spiral Retaining Rings (2) Thrust Bearing (1) Thrust Bearing Washers (2) | 0000000 | 00000 |
| D40 | 8 | Cap (1) O-Ring (1) Segment (1) Spiral Retaining Ring (1) Thrust Bearing (1) Thrust Bearing Washers (3) | 0000000 | 00000 |
| D60 | 7 | Cap (1) Segment (1) Spiral Retaining Ring (1) Thrust Bearing (1) Thrust Bearing Washers (3) | 0000000 | 00000 |
| D675 | 10 | Drive Type Grease Fitting (1) Internal Brush Seal (1) O-Ring (1) Plug/Grease Fitting (1) Segment (1) Spiral Retaining Ring (1) Thrust Bearing (1) Thrust Bearing Washers (3) | 0000000 | 00000 |
| D688 | 9 | Internal Brush Seals (2) O-Ring (1) Segment (1) Spiral Retaining Ring (1) Thrust Bearing (1) Thrust Bearing Washers (3) | 0000000 | 00000 |
| DL640 | 17 | Clutch Springs (3) O-Rings (3) Pin/Dowel (1) Pre-Loaded Spring (1) Retaining Rings (2) Snap Ring (1) Thrust Bearing (1) Thrust Bearing Washers (3) Wiper Ring Seals (2) | 0000000 | 00000 |
| DX4 | 10 | Internal Brush Seals (2) O-Ring (1) Spiral Retaining Rings (2) Thrust Bearing (1) Thrust Bearing Washers (2) Wave Springs (2) | 0000000 | 00000 |
| DX6 | 11 | Internal Brush Seals (2) O-Rings (2) Spiral Retaining Rings (2) Thrust Bearing (1) Thrust Bearing Washers (2) Wave Springs (2) | 0000000 | 00000 |
| HDL6, HDLM6 | 17 | Clutch Springs (3) Dowel Pin (1) O-Rings (3) Pre-Loaded Spring (1) Retaining Rings (2) Snap Ring (1) Thrust Bearing (1) Thrust Bearing Washers (3) Wiper Ring (1) Wiper Ring Seal (1) | 0000000 | 00000 |
Air-Powered Push Toggle Clamps
Use for repetitive clamping and in production environments. These clamps secure when the plunger is fully extended to hold a workpiece from the side. Air from one inlet port engages the clamp, and air from the other inlet port disengages it. Clamps maintain the full-rated holding capacity even with a loss of air pressure. They have a threaded plunger to accommodate threaded holding screws and other threaded fixtures (not included). Fittings (not included) are required to connect the clamp's ports to a control valve and an air line.
For technical drawings and 3-D models, click on a part number.
Plunger | When Clamped | Air Inlet and Outlet | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Lg. | Ht. | Travel | Dia. | Thread Size | Thread Lg. | O'all Ht. | O'all Lg. | Max. Air Inlet Pressure, psi | Pipe Size | Thread Type | Gender | Temperature Range, °F | Body Material | Each | |
| 600 | 1 1/4" | 1 1/8" | 3/4" | 7/16" | 5/16"-18 | 1" | 3" | 9 7/8" | 60 | 1/8 | NPT | Female | -10° to 165° | Steel | 0000000 | 0000000 |
| 2,500 | 2" | 1 1/8" | 1 1/4" | 5/8" | 3/8"-16 | 1 1/4" | 3 5/8" | 13 1/2" | 145 | 1/8 | NPT | Female | -10° to 165° | Steel | 0000000 | 000000 |
| 16,000 | 3 3/8" | 2 5/8" | 2" | 1" | 5/8"-11 | 2" | 7 1/4" | 20 5/8" | 145 | 1/4 | NPT | Female | -10° to 165° | Steel | 0000000 | 000000 |
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 |
Long-Life Dual-Mount Air-Powered Hold-Down Toggle Clamps
These clamps have double the service life of other air-powered toggle clamps. Use for repetitive clamping and in production environments. They have two sets of holes for mounting on the bottom or side. Air from one inlet port engages the clamp, and air from the other inlet port disengages it. Clamps maintain the full-rated holding capacity even with a loss of air pressure. Capacity decreases by as much as 65% when mounting at the end of the arm. Fittings (not included) are required to connect the clamp’s ports to a control valve and an air line.
For technical drawings and 3-D models, click on a part number.
Arm | When Clamped | Air Inlet and Outlet | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Max. Clamping Clearance | Ht. | Lg. | Opening Angle | O'all Lg. | O'all Ht. | Max. Air Inlet Pressure, psi | Thread Size | Thread Type | Gender | Temperature Range, °F | Body Material | Each | |
With Solid Arm | ||||||||||||||
| 220 | 3/16" | 3/16" | 1 9/16" | 120° | 2 1/2" | 4 1/16" | 87 | M5 | Metric | Male | -14° to 194° | 6061 Aluminum | 000000 | 0000000 |
| 530 | 1/4" | 1/4" | 2" | 120° | 3" | 4 11/16" | 87 | M5 | Metric | Male | -14° to 194° | 6061 Aluminum | 000000 | 000000 |
| 885 | 3/8" | 3/8" | 2 1/8" | 120° | 3 1/2" | 5 15/16" | 87 | M5 | Metric | Male | -14° to 194° | 6061 Aluminum | 000000 | 000000 |
Dual-Mount Air-Powered Hold-Down Toggle Clamps
Two sets of holes allow mounting on the bottom or side. Use these clamps for repetitive clamping and in production environments. Air from one inlet port engages the clamp, and air from the other inlet port disengages it. Clamps maintain the full-rated holding capacity even with a loss of air pressure. They have an open arm, so you can move the holding screw to any position along the arm. To achieve maximum holding capacity, position the screw closest to the base. Capacity decreases by as much as 65% when the screw is positioned at the end of the arm. Fittings (not included) are required to connect the clamp’s ports to a control valve and an air line.
For technical drawings and 3-D models, click on a part number.
Arm | When Clamped | Holding Screws | Air Inlet and Outlet | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Max. Clamping Clearance | Ht. | Lg. | Opening Angle | O'all Lg. | O'all Ht. | No. of | Tip Material | Thread Size | Max. Air Inlet Pressure, psi | Pipe Size | Thread Type | Gender | Temperature Range, °F | Body Material | Each | |
With Open Arm | |||||||||||||||||
| 350 | 1 5/8" | 2 11/16" | 2 3/8" | 95° | 6 1/4" | 7 1/2" | 2 | Steel, Rubber | 5/16"-18 | 145 | 1/8 | NPT | Female | -14° to 194° | Steel | 0000000 | 0000000 |
| 600 | 2 5/8" | 3 7/8" | 3 1/4" | 85° | 8 5/8" | 9" | 2 | Steel, Rubber | 3/8"-16 | 145 | 1/8 | NPT | Female | -14° to 194° | Steel | 0000000 | 000000 |
Air-Powered Hold-Down Toggle Clamps
Use for repetitive clamping and in production environments. Air from one inlet port engages the clamp, and air from the other inlet port disengages it. Clamps maintain the full-rated holding capacity even with a loss of air pressure. Fittings (not included) are required to connect the clamp's ports to a control valve and an air line.
Clamps with open arm allow you to move the holding screw to any position along the arm. To achieve maximum holding capacity, position the screw closest to the base. Capacity decreases by as much as 65% when the screw is positioned at the end of the arm.
For technical drawings and 3-D models, click on a part number.
Arm | When Clamped | Holding Screws | Air Inlet and Outlet | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Max. Clamping Clearance | Ht. | Lg. | Opening Angle | O'all Lg. | O'all Ht. | No. of | Tip Material | Thread Size | Max. Air Inlet Pressure, psi | Pipe Size | Thread Size | Thread Type | Gender | Temperature Range, °F | Body Material | Each | |
With Open Arm | ||||||||||||||||||
| 100 | 3/8" | 3/4" | 1 1/8" | 95° | 5 5/8" | 1 5/8" | 2 | Steel, Rubber | M5 | 40 | __ | M5 | Metric | Female | -10° to 165° | Steel | 0000000 | 0000000 |
| 200 | 5/8" | 1 1/8" | 1 3/4" | 100° | 7 3/4" | 2 5/8" | 2 | Steel, Rubber | M6 | 30 | 1/8 | __ | NPT | Female | -10° to 165° | Steel | 0000000 | 000000 |
| 375 | 29/32" | 1 3/8" | 2 1/2" | 100° | 9 3/8" | 3" | 2 | Steel, Rubber | 5/16"-18 | 45 | 1/8 | __ | NPT | Female | -10° to 165° | Steel | 0000000 | 000000 |
| 600 | 1 7/32" | 1 7/8" | 3 5/8" | 95° | 11 3/4" | 3 7/8" | 2 | Steel, Rubber | 3/8"-16 | 50 | 1/8 | __ | NPT | Female | -10° to 165° | Steel | 0000000 | 000000 |
| 1,000 | 1 15/32" | 2 1/4" | 4 7/8" | 90° | 15 1/4" | 4 1/2" | 2 | Steel, Rubber | 1/2"-13 | 75 | 1/4 | __ | NPT | Female | -10° to 165° | Steel | 0000000 | 000000 |
With Solid Arm | ||||||||||||||||||
| 4,000 | 3 7/8" | 3 7/8" | 4 13/16" | 95° | 17 1/2" | 7 1/8" | __ | __ | __ | 145 | 1/4 | __ | NPT | Female | -14° to 194° | Steel | 0000000 | 000000 |
Short-Stroke Clamping Air Cylinders
Also known as air clamps, these cylinders are used to apply force in holding applications. All are single acting with air-extend actuation—also known as push style, air extends the rod and cylinders have a spring that returns the rod to its original position.
For technical drawings and 3-D models, click on a part number.
