Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X400S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X400S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 400mm give 4 controllable stop positions across a 500mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1100 mm
- Stroke 2400 mm
- Total travel500 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X400S
The SCT80X100X400S tandem cylinder provides four fixed rod positions: fully retracted (0 mm), 100 mm, 400 mm, and the full combined travel of 500 mm. Each of the two 80 mm bore sections delivers 2513 N of push force at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, making it a robust actuator for multi-stop linear tasks.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing. The 25 mm diameter rod and 28 mm adjustable air cushion at each end provide reliable deceleration. The total body length A(SCT) is 296 mm plus the 500 mm of total stroke.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X400S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X400S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 100 / 400 mm |
| Total travel | 500 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) | 100 mm |
| P2 (section 2) | 400 mm |
| P3 (both extended) | 500 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 SCT80X100X400S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×400 | 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 SCT80X100X400S Is Used
Multi-Stop Diverter Gate
Operates a 4-position gate on a conveyor line, directing packages to three separate lanes by stopping at 0 mm, 100 mm, 400 mm, or full 500 mm extension.
Two-Depth Pressing Station
Provides two controlled pressing depths in one cycle. The first section extends to a 100 mm pre-press position, and the second section drives to the 400 mm final form depth.
Staged Part Transfer
Transfers parts between four fixed stations on an assembly dial. The 500 mm total stroke bridges the main span, while the 100 mm and 400 mm stops serve intermediate pick-and-place points.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X400S the Right Cylinder?
Choose this 4-position SCT model when your process requires a single compact actuator to stop at two intermediate points and full extension, such as a diverter gate with a bypass position. The SCT configuration eliminates the need to synchronize two separate cylinders with external hard stops, reducing plumbing and mounting complexity. If a lighter load permits, stepping down to the 63 mm bore (1559 N push at 0.5 MPa) can save space.
For replacement, match the 80 mm bore, both the 100 mm and 400 mm section strokes, the PT port thread, and the built-in magnet (-S suffix). Given the 400 mm second 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 100 + 400 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 SCT80X100X400S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 100 mm (first section extended), 400 mm (second section extended), and 500 mm (both sections extended). These positions are achieved by pressurizing the cylinder's two sections independently or together.
Yes, if your application requires fixed stops at 100 mm and 400 mm. The SCT80X100X400S integrates both strokes into one rod line, guaranteeing the spatial relationship between stops without external brackets. Ensure the replacement matches the PT ports and the built-in magnet for sensor compatibility.
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