Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X250S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 250mm give 4 controllable stop positions across a 330mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 180 mm
- Stroke 2250 mm
- Total travel330 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X250S
The SCT100X80X250S is a double-acting multi-position cylinder that provides four fixed rod positions: fully retracted (0 mm), 80 mm, 250 mm, and the full combined travel of 330 mm. Each piston section generates a push force of 3927 N at 0.5 MPa, offering substantial power for heavy-duty sorting or multi-depth pressing tasks.
This model features a built-in magnet (suffix -S), allowing direct mounting of CMSG, DMSG, or EMSG sensors for non-contact position feedback. With a 25 mm diameter rod, M20x1.5 rod thread, and PT1/2 ports, the unit has a body length A of 308 mm and an adjustable air cushion of 29 mm for smooth end-of-stroke deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X250S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 80 / 250 mm |
| Total travel | 330 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) | 250 mm |
| P3 (both extended) | 330 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 SCT100X80X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT100X80X250S Is Used
Multi-Stop Diverter Gate
Operates a three-position diverter gate on a conveyor line, using the 0, 80, and 330 mm stops to sort packages into three separate lanes.
Two-Depth Clamping Fixture
Provides a high-force clamp with two distinct pressing depths (80 mm and 250 mm) for assembling components of different heights in a single station.
Staged Material Pusher
Pushes parts through a multi-stage process, stopping precisely at 80 mm for an inspection step and at the full 330 mm travel to eject the finished part.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X250S the Right Cylinder?
Choose the SCT100X80X250S when your process requires four distinct mechanical stops without the complexity of servo controls or multiple individual cylinders. The 100 mm bore is ideal for high-force applications; if your load is lighter, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and physical footprint. For a direct replacement, match the 100 mm bore, both 80 mm and 250 mm strokes, PT port thread, basic mounting, and the -S magnet option. Since the 250 mm stroke section is extended, ensure the rod is adequately guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 250 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 SCT100X80X250S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 80 mm (section 1 extended), 250 mm (section 2 extended), and 330 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely variable.
Yes, in many cases. The SCT100X80X250S integrates two strokes on a single rod line, saving space and simplifying plumbing compared to two separate SC100 cylinders with external stop mechanisms. Ensure the replacement matches the 100 mm bore, 80 mm and 250 mm strokes, PT ports, and the -S magnet sensor option.
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