Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X230
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X230 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 230mm give 4 controllable stop positions across a 280mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 150 mm
- Stroke 2230 mm
- Total travel280 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X230
The SCT80X50X230 is an 80 mm bore tandem cylinder that delivers four distinct rod positions from two independent piston sections on a single rod line. By pressurizing one or both sections, you can stop precisely at 0 mm (fully retracted), 50 mm, 230 mm, or the full combined travel of 280 mm. Each actuated section generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, driven through a robust 25 mm diameter rod.
This tie-rod cylinder features an adjustable pneumatic cushion at both ends, with a 28 mm cushion length to decelerate the piston smoothly. The body length A(SCT) is 296 mm, providing a compact tandem package for its 280 mm total stroke. Standard PT3/8 ports and TPU seals suit filtered air operation from -20 to +70 °C, making it a reliable choice for multi-stop material handling where discrete positioning is required without complex servo controls.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X230 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X230 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 50 / 230 mm |
| Total travel | 280 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) | 50 mm |
| P2 (section 2) | 230 mm |
| P3 (both extended) | 280 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 SCT80X50X230
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×230 | 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 SCT80X50X230 Is Used
Two-Stage Part Diverting
Use the 50 mm stroke to lift a diverter gate partially and the 230 mm stroke to fully extend it, routing parts to three different conveyor lanes from one actuator.
Multi-Depth Pressing
Achieve a light contact at 50 mm extension and a full-depth forming stroke at 280 mm, controlling two press depths with a single tandem cylinder.
Sequential Product Stopping
Stop a pallet at a 50 mm inspection point, then release it to a 230 mm downstream work station, with the 280 mm position used for a reject lane.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X230 the Right Cylinder?
Choose the SCT80X50X230 when your application needs three or four fixed stopping points and a single-rod footprint is preferred over installing two separate 80 mm bore cylinders with external hard stops. The 50 mm and 230 mm section strokes create an asymmetric position set ideal for a short advance and a longer secondary feed. If your force requirement is lower, stepping down to a 63 mm bore reduces the per-section push force to 1559 N at 0.5 MPa, saving air consumption. For a direct replacement, match an AirTAC SCT of 80 mm bore with strokes of 50 mm and 230 mm, PT thread, and basic mounting. Given the 230 mm section stroke, ensure the rod is adequately guided if side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 230 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 SCT80X50X230 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (first section extended), 230 mm (second section extended), and 280 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
No, like all standard pneumatic cylinders, the SCT80X50X230 will drift or drop if air pressure is lost or the valve centers. The air cushion decelerates the piston but does not lock it. If you need to hold a load at the 230 mm or 280 mm position without live pressure, you must add an external rod lock or a pilot-operated check valve.
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