Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X500S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X500S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 500mm give 4 controllable stop positions across a 550mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 150 mm
- Stroke 2500 mm
- Total travel550 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X500S
The SCT80X50X500S is a tandem multi-position cylinder providing four fixed rod positions: fully retracted (0 mm), 50 mm, 500 mm, and the combined total travel of 550 mm. Each 80 mm bore section delivers a push force of 2513 N at 0.5 MPa, making it a robust actuator for sequencing two distinct extension points in a single compact tie-rod assembly.
A built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for end-of-stroke or mid-position confirmation. The cylinder features a 25 mm diameter rod, PT3/8 ports, and a 28 mm adjustable air cushion to decelerate the load smoothly. Its body length A(SCT) is 296 mm, providing a rigid base for multi-stop tasks.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X500S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X500S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 50 / 500 mm |
| Total travel | 550 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) | 500 mm |
| P3 (both extended) | 550 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 SCT80X50X500S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×500 | 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 SCT80X50X500S Is Used
Two-Stage Part Ejection
Use the 50 mm stroke for initial part release and the full 550 mm travel to clear the tooling area, sequencing two ejection distances from a single cylinder body.
Dual-Position Gate Control
Operate a diverter gate with a partially open position at 50 mm for sorting small items and a fully open position at 550 mm for bulk flow, controlled by pressurizing different sections.
Sequential Clamping & Staking
Apply a light pre-clamp force at the 50 mm position, then drive to the 500 mm stroke for a full-power staking or pressing operation, all within one integrated actuator.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X500S the Right Cylinder?
Choose the SCT80X50X500S when your process requires two precise, repeatable extension points without the complexity of two separate cylinders and external stops. The 50 mm and 500 mm strokes give a short advance and a full extension, ideal for two-stage feeding or clamping. For higher force, step up to the 100 mm bore (3927 N push at 0.5 MPa); for a lighter, more compact solution, the 63 mm bore offers 1559 N.
A direct replacement must match the 80 mm bore, both the 50 mm and 500 mm strokes, PT port thread, and the built-in magnet. With the 500 mm section stroke, ensure the rod is adequately guided if significant side loads are present to prevent bending or uneven seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 500 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 SCT80X50X500S FAQ
This model provides four discrete positions: 0 mm (fully retracted), 50 mm (first section extended), 500 mm (second section extended), and 550 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, in applications needing two fixed extension points. The SCT80X50X500S integrates both strokes on a single rod line, saving space and eliminating the need to synchronize two separate actuators. A replacement must match the 80 mm bore, both 50 mm and 500 mm strokes, and the magnet option.
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