Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X40
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X40 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 40mm give 4 controllable stop positions across a 240mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1200 mm
- Stroke 240 mm
- Total travel240 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X40
The SCT80X200X40 is a tandem multi-position pneumatic cylinder that provides four distinct rod positions from two strokes on a single piston rod line. With section strokes of 200 mm and 40 mm, the reachable stops are 0 mm (fully retracted), 40 mm, 200 mm, and the total travel of 240 mm. This 80 mm bore cylinder delivers a push force of 2513 N per actuated section at 0.5 MPa, making it suitable for material handling tasks that require two different extended working positions.
Built on a durable tie-rod design, this cylinder uses a 25 mm diameter rod with PT3/8 ports and an M20x1.5 rod thread. The adjustable pneumatic cushion at each end, with a cushion length of 28 mm, provides smooth deceleration. The body length A for this SCT configuration is 296 mm. Operating pressure ranges from 0.15 to 1.0 MPa, with a maximum push force of 4523 N per section at 0.9 MPa.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X40 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X40 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 200 / 40 mm |
| Total travel | 240 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) | 200 mm |
| P2 (section 2) | 40 mm |
| P3 (both extended) | 240 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 SCT80X200X40
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×200 | Stroke 1 (section 1) in mm. |
| ×40 | 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 SCT80X200X40 Is Used
Two-Stage Sorting Gate
Use the 40 mm stroke for a partial gate opening to divert small items and the 200 mm stroke for a full opening to pass larger packages, all from one compact cylinder.
Dual-Depth Clamping Fixture
Apply a light clamp at the 40 mm position for delicate workpieces and a full-power clamp at 200 mm for robust parts, controlling each depth by pressurising the appropriate cylinder section.
Two-Position Part Staging
Advance a workpiece to a 40 mm inspection station, then move it further to a 200 mm assembly point without needing a second actuator, streamlining the transfer line.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X40 the Right Cylinder?
Select the SCT80X200X40 when your application needs two distinct extended positions—here 40 mm and 200 mm—without the complexity of two separate cylinders and external stops. This tandem unit simplifies plumbing and mounting compared to using two individual SC80 cylinders, and it guarantees the positional relationship between the two strokes. If your force requirement is lower, consider stepping down to the 63 mm bore (1559 N push at 0.5 MPa) for a smaller footprint. For a direct replacement, match the 80 mm bore, both the 200 mm and 40 mm strokes, PT port thread, and the basic mounting configuration. Since the 200 mm stroke section is substantial, evaluate your load for side forces and consider adding an external guide or rod support to prevent bending if the load is not perfectly axial.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 200 + 40 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 SCT80X200X40 FAQ
This cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 40 mm (stroke 2 only), 200 mm (stroke 1 only), and 240 mm (both strokes combined). You select the position by pressurising either section 1, section 2, or both simultaneously.
The SCT tandem cylinder mounts as a single unit on the same centreline, saving space and eliminating the need to synchronise two separate actuators. It guarantees a fixed geometric relationship between the 40 mm and 200 mm stops, which is difficult to maintain with two independent cylinders and external hard stops.
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