Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X400
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X400 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 400mm give 4 controllable stop positions across a 450mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 150 mm
- Stroke 2400 mm
- Total travel450 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X400
The SCT100X50X400 is a 100 mm bore tandem multi-position cylinder that delivers four fixed rod positions: fully retracted (0 mm), 50 mm, 400 mm, and the combined total travel of 450 mm. Each actuated piston section generates 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, driven through a rigid 25 mm diameter rod.
Built on a durable tie-rod construction with a 308 mm base body length and a generous 29 mm air cushion at each end, this double-acting unit decelerates loads smoothly without external shock absorbers. The PT1/2 ports and M20x1.5 rod thread make integration straightforward, while the standard TPU seals ensure reliable operation in ambient temperatures from -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X400 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X400 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 400 mm |
| Total travel | 450 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) | 50 mm |
| P2 (section 2) | 400 mm |
| P3 (both extended) | 450 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 SCT100X50X400
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×400 | 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 SCT100X50X400 Is Used
Two-Depth Clamping Fixture
The 50 mm stroke applies light pre-clamping force while the 400 mm stroke provides the main high-force clamping action, eliminating the need for two separate pneumatic circuits.
Dual-Stop Part Diverting
Use the 50 mm and 400 mm positions to divert parts to two different conveyor lanes from a single infeed, simplifying the sorting station layout.
Two-Stage Press Operation
A rapid 400 mm approach stroke followed by a controlled 50 mm power stroke allows fast cycle times with precise final positioning in assembly presses.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X400 the Right Cylinder?
This four-position actuator replaces setups that would otherwise require two separate cylinders and external hard stops to achieve a short 50 mm advance and a longer 400 mm secondary stroke. When the 3927 N push force at 0.5 MPa is more than needed, stepping down to an 80 mm bore SCT80X50X400 reduces the per-section push to 2513 N at the same pressure, saving air consumption and physical space. For a drop-in replacement, match the 100 mm bore, both the 50 mm and 400 mm strokes, PT port thread, and the basic mounting configuration.
Because the second stroke extends to 400 mm, evaluate the rod for column buckling if the load is not guided; a rigid external guide or rod-alignment coupler is recommended to prevent side-load damage and ensure the 25 mm rod runs true over the full 450 mm total travel.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 400 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 SCT100X50X400 FAQ
The four discrete rod positions are 0 mm (fully retracted), 50 mm (first section extended), 400 mm (second section extended), and 450 mm (both sections extended). These are fixed mechanical stops, not infinitely variable positions.
Yes, if your application requires a 50 mm and a 400 mm stroke from the same rod axis. The SCT100X50X400 integrates both strokes into one compact tandem body, reducing mounting hardware and eliminating the need to synchronize two separate cylinders.
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