Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X75S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 75mm give 4 controllable stop positions across a 125mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 150 mm
- Stroke 275 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X75S
The SCT100X50X75S is a double-acting multi-position tandem cylinder that provides four distinct rod positions: 0 mm (fully retracted), 50 mm, 75 mm, and the total travel of 125 mm. Each 100 mm bore section generates a push force of 3927 N at 0.5 MPa, making it a powerful choice for sorting or diverting heavy items. The cylinder body length A(SCT) is 308 mm, and the 25 mm diameter rod is threaded M20x1.5.
This model includes a built-in magnet, designated by the 'S' suffix, which allows for direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing. The standard TPU seals provide reliable operation in a temperature range of -20 to +70 °C, and the PT ports ensure a solid pneumatic connection. It is a genuine AirTAC product, engineered for consistent multi-stop performance.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X75S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 75 mm |
| Total travel | 125 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/2 |
| 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, 29 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) | 50 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 125 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCT100X50X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT100X50X75S Is Used
Multi-Chute Sorting Gate
Directs heavy parcels or components to one of four different chutes by pressurizing the cylinder sections to reach the 50 mm, 75 mm, or 125 mm stop positions for precise, high-force gate control.
Two-Depth Pressing Station
Performs a two-stage pressing operation on large assemblies. The first stage advances to 50 mm for a partial press, and the second stage extends to the full 125 mm for final insertion, all with a single actuator.
Pallet Stop and Metering
Acts as a heavy-duty pallet metering device on a conveyor line. The rod extends to 50 mm to stop a pallet, retracts to 75 mm to release it, and uses the full 125 mm extension to separate the next one.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X75S the Right Cylinder?
Select the SCT100X50X75S when your application requires a compact, single-cylinder solution for four fixed stop positions, rather than the complexity of two separate cylinders and external hard stops. For applications needing a different force profile, stepping down to an 80 mm bore provides 2513 N of push force per section at 0.5 MPa. To replace this specific model, the new cylinder must match the 100 mm bore, both the 50 mm and 75 mm strokes, PT port thread, basic mounting, and the built-in magnet option (-S).
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 75 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 SCT100X50X75S FAQ
This tandem cylinder has four discrete rod positions: 0 mm (fully retracted), 50 mm (first section extended), 75 mm (second section extended), and 125 mm (both sections extended). The positions are fixed and selected by pressurizing the cylinder's two air ports independently or together.
The SCT provides three or four fixed, repeatable stop positions from a single, compact actuator body, eliminating the need for complex bracketry, alignment of two separate cylinders, and external hard stops. It simplifies the pneumatic circuit and ensures the rod's linear path is perfectly aligned for all positions.
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