Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X30X25S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X30X25S 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 Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 130 mm
- Stroke 225 mm
- Total travel55 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X30X25S
The SCT100X30X25S is a tandem multi-position cylinder delivering four discrete rod stops: 0 mm, 30 mm, 25 mm, and the full combined travel of 55 mm. Each piston section, when actuated, provides a substantial 3927 N of push force at 0.5 MPa (3681 N pull), making it suitable for heavy-duty sorting or clamping tasks requiring a compact stroke set.
This model features a built-in magnet, allowing easy attachment of CMSG, DMSG, or EMSG sensors for end-of-stroke and mid-position detection. The cylinder uses a robust 25 mm diameter rod with an M20x1.5 thread, PT1/2 ports, and a 29 mm adjustable air cushion at each end to manage the high inertial loads typical of a 100 mm bore.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X30X25S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X30X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 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 | 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) | 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 (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 SCT100X30X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | 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 SCT100X30X25S Is Used
Two-Stage Clamping
A primary clamp advances 30 mm with high force, followed by a secondary, lower-force 25 mm stroke to secure a delicate component without crushing it.
Diverter Gate
Positions a gate at 0, 25, 30, or 55 mm to sort heavy packages on a conveyor line into four separate lanes.
Multi-Depth Press
Provides two distinct pressing depths (30 mm and 55 mm) for a forming operation, with an intermediate 25 mm stop for part ejection.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X30X25S the Right Cylinder?
Select the SCT100X30X25S when your application requires four specific hard stops within a very short 55 mm total envelope, eliminating the complexity of two separate cylinders and external stops. If your force requirement is lower, stepping down to an 80 mm bore reduces the per-section push to 2513 N at 0.5 MPa. For a direct replacement, ensure the new unit matches the 100 mm bore, both 30 mm and 25 mm strokes, PT port thread, and the -S magnet option; this model is a basic mount configuration, so mounting accessories must be ordered separately if needed.
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 SCT100X30X25S FAQ
It provides four distinct mechanical stops: 0 mm (fully retracted), 30 mm (first section extended), 25 mm (second section extended), and 55 mm (both sections extended). The unequal strokes create four unique positions.
Each of the two piston sections generates 3927 N of push force and 3681 N of pull force when operated at 0.5 MPa. The force from the two sections does not add together to create a higher combined force for multi-position moves.
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