Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X90S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X90S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 90mm give 4 controllable stop positions across a 170mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 290 mm
- Total travel170 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X90S
The SCT80X80X90S is a double-acting tandem cylinder that delivers four fixed rod positions from two independent strokes of 80 mm and 90 mm on a single 25 mm diameter rod. By pressurising one or both piston sections, the rod can be precisely indexed to 0 mm (fully retracted), 80 mm, 90 mm, or the total travel of 170 mm, making it ideal for multi-stop feeding or diverting tasks.
Each 80 mm bore 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. The cylinder has a 28 mm adjustable air cushion, PT3/8 ports, and a body length of 296 mm. The integrated magnet in this -S model allows direct mounting of CMSG/DMSG/EMSG sensors for reliable, non-contact position feedback at each discrete stop.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X90S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X90S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 90 mm |
| Total travel | 170 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) | 90 mm |
| P3 (both extended) | 170 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 SCT80X80X90S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×90 | 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 SCT80X80X90S Is Used
Four-Position Diverter Gate
Directs parts on a conveyor to four separate lanes by stopping the rod at 0, 80, 90, or 170 mm, using sensors to confirm each discrete gate position.
Multi-Depth Pressing Station
Performs a two-step pressing operation with a single actuator, moving to a pre-press position at 80 mm and a final press depth at 170 mm, with a 90 mm retract step for part ejection.
Staggered Part Transfer
Transfers components between three conveyor heights in a single, controlled sequence, using the 0, 90, and 170 mm positions to align with different machine infeed levels.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X90S the Right Cylinder?
Choose the SCT80X80X90S when your process requires a compact, pneumatic-only solution for four fixed end-of-stroke positions, eliminating the complexity of two separate cylinders and external hard stops. For a higher force requirement at the same pressure, stepping up to the 100 mm bore provides 3927 N of push per section. If a lighter, more energy-efficient solution is acceptable, the 63 mm bore offers 1559 N per section.
This model is a direct replacement for an existing AirTAC SCT80X80X90S with a PT port and built-in magnet. Ensure the replacement matches the 80 mm and 90 mm strokes, the SCT body length, and the sensor type. For strokes over 300 mm, consider external guides to protect the 25 mm rod from side-load deflection.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 90 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 SCT80X80X90S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 80 mm, 90 mm, and 170 mm (full extension). The positions are achieved by pressurising the first section, the second section, or both sections simultaneously. It does not provide infinitely variable positioning.
Yes, if the original is an AirTAC SCT80 with 80 mm and 90 mm strokes and a built-in magnet. The -S suffix denotes the integrated magnetic ring required for CMSG/DMSG/EMSG sensors. Confirm the port thread is PT and that the mounting style matches your current setup.
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