Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X385S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X385S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 175mm and 385mm give 4 controllable stop positions across a 560mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1175 mm
- Stroke 2385 mm
- Total travel560 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X385S
The SCT80X175X385S is a double-acting multi-position cylinder that provides four fixed rod positions: 0 mm (fully retracted), 175 mm, 385 mm, and 560 mm (total travel). Each of the two piston sections delivers 2513 N of push force at 0.5 MPa, making it suitable for sorting or diverting tasks that require distinct, repeatable stop points without complex servo controls. The built-in magnet allows direct mounting of CMSG or DMSG sensors for end-of-stroke or intermediate position detection.
This 80 mm bore tandem cylinder uses a 25 mm diameter rod and PT3/8 ports. The adjustable pneumatic cushion at each end, with a cushion length of 28 mm, helps manage kinetic energy at the 560 mm total stroke. The body length A(SCT) is 296 mm, and the maximum thrust per section reaches 4523 N at the 0.9 MPa operating limit, giving a clear picture of its mechanical capacity.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X385S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X385S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 175 / 385 mm |
| Total travel | 560 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) | 175 mm |
| P2 (section 2) | 385 mm |
| P3 (both extended) | 560 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 SCT80X175X385S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×175 | Stroke 1 (section 1) in mm. |
| ×385 | 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 SCT80X175X385S Is Used
Multi-Stop Diverter Gates
Uses the four discrete positions (0, 175, 385, 560 mm) to route packages or materials to four different conveyor lanes, eliminating the need for multiple single-stroke actuators.
Two-Depth Pressing Station
Achieves a shallow press depth at 175 mm and a deeper press at 385 mm from the same retracted home position, with a full-extend 560 mm position for part ejection or cleaning access.
Staged Assembly Fixture
Positions a tooling plate at three precise working heights (175, 385, 560 mm) above a base, allowing an operator or robot to perform sequential assembly steps at each level.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X385S the Right Cylinder?
Selecting the SCT80X175X385S is ideal when a process needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. This model is a direct replacement for another AirTAC SCT80 with the same 175 mm and 385 mm section strokes, PT thread, and built-in magnet. If the 2513 N push force per section at 0.5 MPa is insufficient, stepping up to the 100 mm bore provides 3927 N per section, while the 63 mm bore offers 1559 N for lighter loads.
Given the total travel of 560 mm, the rod is fully supported within the cylinder body, but for applications with significant side loading, external linear guides should be used to prevent rod bending and ensure long seal life. The integrated magnet simplifies adding reed or solid-state sensors for position feedback.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 175 + 385 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 SCT80X175X385S FAQ
It provides four distinct mechanical stop positions: 0 mm (fully retracted), 175 mm, 385 mm, and the total extended length of 560 mm. These are achieved by pressurizing the first section, the second section, or both simultaneously.
Yes, it is designed to do exactly that. A single SCT80X175X385S with a built-in magnet can replace a setup of two individual cylinders and hard stops, simplifying the pneumatic circuit, reducing mounting hardware, and providing the same four fixed positions in a more compact, single-rod-line package.
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