Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X200
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X200 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 200mm give 4 controllable stop positions across a 325mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1125 mm
- Stroke 2200 mm
- Total travel325 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X200
The SCT100X125X200 tandem cylinder provides four distinct rod positions: fully retracted, 125 mm, 200 mm, and the full 325 mm total travel. Each actuated piston section delivers a robust push force of 3927 N at 0.5 MPa, making it suitable for heavy-duty multi-stop workflows.
Built with a 25 mm diameter rod and M20x1.5 rod thread, this 100 mm bore cylinder uses PT1/2 ports. The body length A(SCT) is 308 mm with a 29 mm cushion, and the maximum push force reaches 7068 N at 0.9 MPa operating pressure.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X200 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X200 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 125 / 200 mm |
| Total travel | 325 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) | 125 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 325 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 SCT100X125X200
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT100X125X200 Is Used
Multi-Stop Sorting Gate
Operates a diverter gate on a conveyor line with three distinct pass-through positions and a fully closed stop, routing packages by size or destination.
Two-Depth Clamping Fixture
Applies an initial low-force clamp at 125 mm travel for alignment, then advances to a full 200 mm stroke for high-pressure holding, preventing part damage.
Sequential Press Operation
Executes a two-stage pressing cycle, first engaging a tool at the 200 mm position for a pre-form operation, then retracting to 125 mm for a secondary forming step.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X200 the Right Cylinder?
Select the SCT100X125X200 when your application needs four fixed positions without the complexity of two separate cylinders and external stops. If your force requirement is lower, stepping down to an 80 mm bore provides 2513 N of push force per section at 0.5 MPa. For a direct replacement, ensure the new unit matches the 100 mm bore, both 125 mm and 200 mm strokes, PT port thread, and basic mounting. The 200 mm section stroke warrants checking for side-loading; consider an external guide if the rod is subjected to significant lateral forces.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 200 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 SCT100X125X200 FAQ
This tandem cylinder provides four discrete stop positions: 0 mm (fully retracted), 125 mm, 200 mm, and the combined total travel of 325 mm. These are achieved by pressurizing the two piston sections independently or together.
Yes, it can consolidate a two-cylinder setup into a single, compact unit, but the replacement must be an exact match: an SCT100 with 125 mm and 200 mm strokes, PT ports, and basic mounting. The per-section force is 3927 N push at 0.5 MPa, not a doubled force.
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