Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 80mm give 3 controllable stop positions across a 160mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 280 mm
- Total travel160 mm
- Positions3 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80
The SCT80X80X80 is a double-acting multi-position pneumatic cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke (80 mm), and fully extended (160 mm). Built on an 80 mm bore with a 25 mm diameter rod and PT3/8 ports, each piston 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.
This tie-rod design incorporates a 28 mm adjustable air cushion in each section to decelerate the piston smoothly at stroke ends. The body length A(SCT) is 296 mm, and the standard TPU seals suit ambient temperatures from -20 to +70°C. With both strokes set identically, it is a compact solution for applications needing a precise three-step sequence without complex external stops.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 80 mm |
| Total travel | 160 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 80 mm |
| P2 (both extended) | 160 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 SCT80X80X80
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | 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 SCT80X80X80 Is Used
Three-Position Diverter Gate
Operates a gate on a conveyor line with three set points: closed (0 mm), divert to lane A (80 mm), and divert to lane B (160 mm). The discrete stops ensure repeatable alignment without overtravel.
Multi-Depth Pressing Station
Provides two distinct pressing depths in a single compact unit. The first section extends to 80 mm for a pre-forming operation, and both sections extend to 160 mm for the final press stroke.
Staged Part Ejection
Ejects parts from a fixture in two stages. A partial 80 mm extension clears the part from the tool, and the full 160 mm stroke pushes it completely onto an outfeed chute.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80 the Right Cylinder?
Select the SCT80X80X80 when your process requires three distinct linear positions and a substantial force output, eliminating the need to synchronize two separate cylinders. If your force requirement is lower, consider stepping down to the 63 mm bore SCT63X80X80, which provides 1559 N of push per section at 0.5 MPa. For a direct replacement, match the 80 mm bore, both 80 mm strokes, PT thread, and basic mounting configuration.
When ordering a replacement, ensure the new unit carries the identical SCT80X80X80 code. For applications with longer strokes where rod buckling is a concern, this model's 25 mm rod provides robust support, but always verify side-load limits if the strokes exceed 300 mm.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 80 + 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 SCT80X80X80 FAQ
This model provides three distinct mechanical stop positions because both internal strokes are equal at 80 mm. The rod positions are 0 mm (fully retracted), 80 mm (one section extended), and 160 mm (both sections extended, total travel).
For a guaranteed drop-in replacement, you must match the 80 mm bore, both 80 mm strokes, and the PT port thread. The replacement must be another AirTAC SCT series cylinder, as it is a specific tie-rod tandem design and is not dimensionally interchangeable with ISO 15552 cylinders.
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