Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X400S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X400S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 400mm give 4 controllable stop positions across a 480mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 2400 mm
- Total travel480 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X400S
The SCT80X80X400S is an 80 mm bore multi-position tandem cylinder that provides four fixed rod positions: fully retracted (0 mm), 80 mm, 400 mm, and the combined total travel of 480 mm. Each piston section delivers a push force of 2513 N at 0.5 MPa, scaling up to 4523 N at the maximum operating pressure of 0.9 MPa, driven through a robust 25 mm diameter rod.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback at any of the four stops. The cylinder body has a base length of 296 mm and features a 28 mm pneumatic cushion at each end section to manage kinetic energy quietly. Standard PT3/8 ports and M20x1.5 rod threads ensure straightforward plumbing and tooling attachment.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X400S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X400S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 400 mm |
| Total travel | 480 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) | 400 mm |
| P3 (both extended) | 480 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 SCT80X80X400S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | 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 SCT80X80X400S Is Used
Multi-Stop Diverter Gates
Operates a conveyor diverter with a home position, a partial bypass at 80 mm, a full divert at 400 mm, and a maintenance lockout at the fully extended 480 mm position.
Dual-Depth Press Operations
Executes a light pre-press at 80 mm and a full forming stroke at 400 mm in a single cycle, with sensor confirmation at each stage via the built-in magnet.
Staged Material Feeding
Advances raw stock in three distinct increments—80 mm, 400 mm, and 480 mm—for a progressive stamping or cutting line, all from one compact tandem cylinder.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X400S the Right Cylinder?
Select the SCT80X80X400S when a single actuator must index between four distinct positions, such as a dual-depth pressing station or a diverter gate with an intermediate bypass. This tandem unit eliminates the complexity and cost of sequencing two separate cylinders with external hard stops. If your application requires higher force, stepping up to the SCT100 series provides 3927 N of push per section at 0.5 MPa. For a direct replacement, ensure the substitute matches the 80 mm bore, the 80 mm and 400 mm section strokes, the PT port thread, and the integrated magnet for sensor compatibility. The 400 mm stroke section is substantial; evaluate the application for potential side-loading and consider an external guide if the rod is subjected to significant transverse forces.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 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 SCT80X80X400S FAQ
This tandem cylinder provides four discrete mechanical stops. The rod positions are at 0 mm (fully retracted), 80 mm (first section extended), 400 mm (second section extended), and 480 mm (both sections extended for total travel).
The SCT80X80X400S integrates two strokes on a single common rod, guaranteeing fixed, repeatable intermediate positions without the alignment and sequencing logic required by two independent cylinders. It simplifies the pneumatic circuit to just three valves and ensures the 80 mm and 400 mm stops are mechanically defined, not dependent on external adjustments.
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