Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X40
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X40 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 40mm give 3 controllable stop positions across a 80mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 140 mm
- Stroke 240 mm
- Total travel80 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X40
The AirTAC SCT100X40X40 is a tandem multi-position cylinder providing three fixed rod positions: fully retracted (0 mm), 40 mm, and the total extended travel of 80 mm. Each piston section generates a powerful 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, driven through a rigid 25 mm diameter rod.
Designed with a tie-rod construction, this double-acting unit features a PT1/2 port and an M20x1.5 rod thread for robust connections. The integrated adjustable air cushion, with a 29 mm cushion length, decelerates the 100 mm bore mass effectively at both ends of the 80 mm total stroke, making it suitable for heavy-duty sorting or positioning tasks where high force and repeatable mechanical stops are essential.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X40 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X40 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 40 / 40 mm |
| Total travel | 80 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 40 mm |
| P2 (both extended) | 80 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 SCT100X40X40
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×40 | 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 SCT100X40X40 Is Used
Heavy-Part Diverter
Uses the three positions (0,40,80 mm) to route heavy components on a conveyor, leveraging the 3927 N per-section force to shift large pallets reliably.
Two-Depth Pressing
Provides a retracted, intermediate, and full-depth stroke for a forming or stamping operation, ensuring consistent part dimensions at both40 mm and80 mm depths.
Multi-Stop Gate
Acts as a robust gate with closed (0 mm), partial-open (40 mm), and full-open (80 mm) positions for metering or segregating bulk materials in a chute.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X40 the Right Cylinder?
Selecting the SCT100X40X40 is ideal when an application requires a compact, high-force actuator with three defined stopping points, eliminating the complexity and plumbing of two separate cylinders with external stops. If the load demands even higher force, stepping up is not possible as 100 mm is the maximum bore for this series; for lighter, faster cycling, consider the SCT80 bore, which provides 2513 N of push per section at 0.5 MPa. To guarantee a direct dimensional and performance replacement, match the100 mm bore, both40 mm stroke sections, PT port thread, and basic mounting configuration exactly.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 40 + 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 SCT100X40X40 FAQ
It provides three distinct mechanical stops because both stroke sections are equal at40 mm. The rod positions are0 mm (fully retracted),40 mm, and80 mm (fully extended).
The force is not doubled. Each of the two piston sections independently generates a push force of3927 N at0.5 MPa. The multi-position function is achieved by pressurizing sections individually or together, but the thrust per actuated section remains constant.
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