Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X25S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 25mm give 4 controllable stop positions across a 55mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 130 mm
- Stroke 225 mm
- Total travel55 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X25S
The SCT80X30X25S is an 80 mm bore multi-position tandem cylinder that delivers four discrete rod positions—0 mm (fully retracted), 30 mm, 25 mm, and the combined 55 mm total travel. Each actuated piston section generates a push force of 2513 N at 0.5 MPa, and thrust climbs to 4523 N at the 0.9 MPa maximum operating pressure, giving this unit substantial power in a compact tie-rod body.
A built-in magnet (the -S suffix) allows CMSG, DMSG, or EMSG sensors to clamp directly onto the barrel for reliable end-of-stroke or mid-position sensing. The 25 mm diameter piston rod and 28 mm air cushion at each end help manage kinetic energy, while the standard PT3/8 ports keep plumbing straightforward. The body length A(SCT) is 296 mm.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X25S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 30 / 25 mm |
| Total travel | 55 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| 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, 28 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) | 30 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 55 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SCT80X30X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT80X30X25S Is Used
Two-Way Diverter Gate
The four positions (0, 30, 25, 55 mm) let a single actuator direct product flow to two separate lanes from a neutral home position, simplifying conveyor routing.
Multi-Depth Insertion
Drive a tool to a shallow 25 mm stop for one component and a deeper 30 mm or 55 mm stop for another variant, all with one cylinder and sensor-confirmed positions.
Staged Clamping Fixture
Apply a light 25 mm pre-clamp stroke, then a full 55 mm clamping stroke, with the magnet-equipped sensors verifying each stage before the next operation begins.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X25S the Right Cylinder?
Choose the SCT80 when a single 80 mm bore cylinder cannot provide the required number of fixed stops—this tandem design gives you four distinct tooling locations without the complexity of two separate actuators and external hard stops. If your force requirement is lower, stepping down to a 63 mm bore reduces the per-section push to 1559 N at 0.5 MPa; for heavier loads, the 100 mm bore delivers 3927 N per section. The built-in magnet on this model eliminates the need for external sensor brackets, simplifying position feedback. For a direct replacement, match the 80 mm bore, both strokes (30 mm and 25 mm), PT port thread, basic mounting, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 30 + 25 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 SCT80X30X25S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 30 mm (section 1 extended), 25 mm (section 2 extended), and 55 mm (both sections extended, total travel).
Yes, if your application needs only the fixed 30 mm, 25 mm, and 55 mm stroke positions. The SCT80X30X25S consolidates two strokes into one tie-rod body, reducing mounting hardware, alignment time, and the number of directional valves required.
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