Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X80S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 80mm give 4 controllable stop positions across a 130mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 150 mm
- Stroke 280 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X80S
The SCT100X50X80S is a double-acting, multi-position tandem cylinder that delivers four fixed rod positions from a single body: 0 mm (fully retracted), 50 mm, 80 mm, and 130 mm (total extended). Each 100 mm bore section generates a push force of 3927 N 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.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The cylinder body has a length of 308 mm, uses PT1/2 ports, and features an adjustable air cushion of 29 mm for smooth deceleration at each stroke end.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X80S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 80 mm |
| Total travel | 130 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) | 80 mm |
| P3 (both extended) | 130 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 SCT100X50X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT100X50X80S Is Used
Multi-Stop Diverter Gate
Positions a diverter gate at four distinct angles—retracted, mid-stroke one, mid-stroke two, and fully extended—to sort packages onto three separate conveyor lanes with a single actuator.
Two-Depth Pressing Station
Executes a two-stage pressing operation: a rapid approach to 50 mm, a first press depth at 80 mm, and a final full-force press at the 130 mm total extension, all controlled by valving.
Sequential Part Feeding
Feeds components in a three-step sequence on an assembly line. The rod stops at 50 mm to release one part, 80 mm for a second, and 130 mm to clear the magazine, using sensor confirmation at each position.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X80S the Right Cylinder?
Select the SCT100X50X80S when your application requires four discrete mechanical stops without the complexity of servo control. This tandem unit replaces two separate cylinders and external stop hardware, simplifying the pneumatic circuit and reducing mounting space. If a lower force is acceptable, stepping down to the 80 mm bore provides 2513 N of push per section at 0.5 MPa. For a direct replacement, match the 100 mm bore, both 50 mm and 80 mm strokes, PT port thread, basic mounting, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 80 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 SCT100X50X80S FAQ
It provides four discrete mechanical stop positions: 0 mm (fully retracted), 50 mm (first section extended), 80 mm (second section extended), and 130 mm (both sections extended). These are fixed by the two stroke lengths and are not infinitely adjustable.
No, the SCT100X50X80S does not have a mechanical locking or brake feature. If air pressure is exhausted or lost, the piston rod can drift or drop under load. To securely hold a position without live pressure, you must add an external rod lock or a pilot-operated check valve in the circuit.
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