Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X300S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X300S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 300mm give 4 controllable stop positions across a 350mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 150 mm
- Stroke 2300 mm
- Total travel350 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X300S
The SCT100X50X300S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: fully retracted (0 mm), 50 mm, 300 mm, and the combined total travel of 350 mm. Each piston section generates a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty material handling where two distinct extended stops are required from a single unit.
This model features a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the 100 mm bore tie-rod barrel for precise end-of-stroke or intermediate position detection. The 25 mm diameter piston rod and 29 mm adjustable air cushion at each end ensure smooth deceleration of high inertial loads, while the PT1/2 port thread provides a reliable pneumatic connection for demanding industrial sequences.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X300S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X300S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 300 mm |
| Total travel | 350 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) | 300 mm |
| P3 (both extended) | 350 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 SCT100X50X300S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×300 | 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 SCT100X50X300S Is Used
Two-Stage Diverter Gate
Operates a conveyor diverter with a partial-open position at 50 mm for sorting small items and a full-open position at 350 mm for larger packages, all controlled by a single cylinder.
Dual-Depth Clamping Fixture
Provides a 50 mm low-force pre-clamp to position a workpiece, followed by a full 350 mm stroke for final clamping, with magnetic sensors confirming each discrete stop.
Multi-Step Assembly Press
Executes a 50 mm initial insertion stroke and a 300 mm final seating stroke in a press-fit assembly cell, using the tandem piston design for consistent, repeatable stop positions.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X300S the Right Cylinder?
Choosing the SCT100X50X300S over two separate cylinders simplifies plumbing and control logic when a process needs both a short 50 mm advance and a longer 300 mm stroke from the same actuator. If the application requires a higher thrust, consider stepping up to a larger bore, though 100 mm is the maximum for this series; for lighter loads, the SCT80 bore delivers 2513 N of push per section at 0.5 MPa. The four-position capability eliminates the need for complex mechanical stops or multiple actuators in multi-step pressing or sorting operations.
For a direct replacement, match the 100 mm bore, the exact 50 mm and 300 mm section strokes, PT port thread, and the built-in magnet (-S suffix). Given the 300 mm stroke on the second section, ensure the load is guided to prevent excessive side-loading and rod deflection, which can compromise seal life and positioning accuracy.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 300 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 SCT100X50X300S FAQ
This 4-position cylinder stops at 0 mm (fully retracted), 50 mm (first section extended), 300 mm (second section extended), and 350 mm (both sections extended). The positions are fixed by the two stroke lengths and are selected by pressurizing the appropriate cylinder sections.
Yes, if your process requires a 50 mm and a 300 mm stroke from the same rod line. The SCT100X50X300S consolidates these two motions into a single tandem body, reducing mounting hardware and simplifying the pneumatic circuit. Ensure the replacement matches the 100 mm bore, PT thread, and the -S magnet option for sensor compatibility.
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