Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X50S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 50mm give 4 controllable stop positions across a 130mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 250 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X50S
The SCT80X80X50S is an 80 mm bore multi-position pneumatic cylinder that delivers four discrete rod stops: 0 mm (retracted), 80 mm, 50 mm, and 130 mm (total travel). Each piston section generates 2513 N of push force at 0.5 MPa, making it a robust choice for diverting or sorting heavier payloads. This model includes a built-in magnet, allowing CMSG/DMSG/EMSG sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke or mid-stroke position sensing.
Built on a durable tie-rod design with a 25 mm diameter rod and PT3/8 ports, the cylinder body has an A(SCT) length of 296 mm and provides 28 mm of adjustable air cushioning at each end. The discrete, repeatable stops eliminate the cost and complexity of servo systems for fixed-sequence operations, while the 0.9 MPa thrust of 4523 N per section offers ample power for demanding multi-stop workflows.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X50S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 50 mm |
| Total travel | 130 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) | 80 mm |
| P2 (section 2) | 50 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 (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 SCT80X80X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT80X80X50S Is Used
Four-Way Diverter Gate
Use the four distinct positions (0, 80, 50, 130 mm) to direct product flow to four separate lanes or chutes on a conveyor system, controlled by pressurizing the two cylinder sections independently or together.
Multi-Level Part Staging
Stage components at two different heights (50 mm and 80 mm) for a pick-and-place sequence. The built-in magnet provides sensor confirmation that the part is at the correct level before the gripper engages.
Two-Depth Pressing Operation
Perform a two-stage pressing or insertion cycle where the first section advances to a 50 mm pre-press position, and the second section drives the full 130 mm for final seating, ensuring consistent, discrete depths.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X50S the Right Cylinder?
Select the SCT80X80X50S when you need four fixed, repeatable positions without the expense of two separate cylinders and external hard stops. If your application requires more force, stepping up to the SCT100 series provides 3927 N of push per section at 0.5 MPa. For a direct replacement, match the 80 mm bore, both 80 mm and 50 mm strokes, PT port thread, basic mounting, and the -S magnet option. With a total stroke of 130 mm, rod bending is not a primary concern under axial loads, but ensure the load is guided if significant side forces are present.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 50 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 SCT80X80X50S FAQ
It provides four discrete positions: 0 mm (fully retracted), 80 mm (first section extended), 50 mm (second section extended), and 130 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely variable.
Yes, in applications requiring two fixed stops. The SCT80X80X50S integrates two piston sections on a single rod, saving space and eliminating the need for external brackets and alignment. Ensure the replacement matches the 80 mm bore, both 80 mm and 50 mm strokes, PT ports, and the -S magnet option.
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