Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 30mm give 4 controllable stop positions across a 110mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 180 mm
- Stroke 230 mm
- Total travel110 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30
The AirTAC SCT100X80X30 is a double-acting, multi-position tandem cylinder that provides four distinct rod-end stop locations without external hard stops. By pressurising the two piston sections independently or together, the rod reaches 0 mm (fully retracted), 80 mm, 30 mm, and a total extended travel of 110 mm. Each section uses a 25 mm diameter rod and PT1/2 ports, with a 29 mm adjustable air cushion at each end to decelerate the load smoothly.
At a standard 0.5 MPa supply, a single actuated section generates 3927 N of push force and 3681 N on the pull stroke. The tie-rod construction and 308 mm body length (A dimension) suit this cylinder for integration into frames where multiple fixed stopping points are required. It operates on filtered air across a -20 to +70 °C range with the default TPU seals, and the maximum operating pressure of 1.0 MPa raises the per-section push force to 7068 N.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 80 / 30 mm |
| Total travel | 110 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 29 mm |
| Max stroke / section | Up to 500 mm standard |
Specifications follow the official AirTAC SCT (multi-position) datasheet. SCT is available in bores 32–100; each of the two sections has a 500 mm max standard stroke (800 mm max). Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 80 mm |
| P2 (section 2) | 30 mm |
| P3 (both extended) | 110 mm |
Positions are set by pressurising section 1, section 2, or both. With equal strokes you get 3 distinct positions; with unequal strokes you get 4.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Force is per actuated piston section (single-piston, same as the SC bore): push uses the full bore area, pull subtracts the rod area. Size with a safety margin.
Model Code: Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×30 | Stroke 2 (section 2) in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCD (double rod), SCJ (adjustable stroke). SCT mounting: Basic, FA, FB, CA, CB, LB. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30 Is Used
Two-Stage Part Diverting
Uses the 80 mm stroke to extend a diverter gate into a main conveyor path and the 30 mm stroke to shift it to a secondary chute, providing four routing options from one cylinder.
Multi-Depth Pressing
Provides three working depths (30, 80, and 110 mm) for a pressing or staking operation, allowing a single tool to process parts requiring different insertion depths without a tool change.
Sequential Clamping
Clamps a workpiece with the initial 30 mm stroke at low force, then applies full clamping pressure by extending to the 80 mm or 110 mm position, useful for delicate assembly processes.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30 the Right Cylinder?
Choose the SCT100X80X30 when a single 100 mm bore actuator must index to four fixed positions for sorting or multi-stage feeding, eliminating the cost and complexity of two separate cylinders and their valving. The 80 mm and 30 mm strokes create an asymmetrical position set ideal for a long advance and a short secondary shift. If the application requires more force, the 100 mm bore is already the largest in the SCT range; for a lighter, more compact solution with lower air consumption, stepping down to the 80 mm bore (2513 N push at 0.5 MPa) is an option.
Direct replacement must match the 100 mm bore, both the 80 mm and 30 mm strokes, PT port thread, and the basic mounting configuration. For strokes exceeding 300 mm total, evaluate the rod’s buckling load and consider an external guide to prevent side-loading the rod bearing.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 30 mm suit your layout?
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Plumb the two sections to the correct valves for each stop.
- check Adjust end cushion screws for smooth stops.
- check Use SCT mounting accessory (FA / FB / CA / CB / LB).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X30 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 80 mm (section one extended), 30 mm (section two extended), and 110 mm (both sections extended, giving the total stroke). The positions are fixed by the internal piston strokes, not infinitely adjustable.
The force output per actuated section is identical to a standard SC100 cylinder—3927 N push at 0.5 MPa. The SCT does not multiply force; it provides the same thrust at each discrete position. Its advantage is a single, compact package that achieves four fixed stopping points, reducing mounting hardware, alignment time, and the number of directional valves required.
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