Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X100S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 100mm give 3 controllable stop positions across a 200mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1100 mm
- Stroke 2100 mm
- Total travel200 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X100S
The SCT100X100X100S is a tie-rod multi-position cylinder that provides three fixed rod positions: fully retracted (0 mm), 100 mm, and the full 200 mm total stroke. Each 100 mm bore section generates a push force of 3927 N at 0.5 MPa, rising to a robust 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty sorting or clamping tasks requiring repeatable intermediate stops.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing at each stop. The cylinder body length A is 308 mm, the piston rod is a sturdy 25 mm diameter with an M20x1.5 thread, and it uses a 29 mm adjustable air cushion to decelerate the 200 mm total mass smoothly.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X100S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 100 / 100 mm |
| Total travel | 200 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) | 100 mm |
| P2 (both extended) | 200 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 SCT100X100X100S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT100X100X100S Is Used
3-Position Diverter Gate
Controls a conveyor diverter with a center neutral position (100 mm) to route packages left, right, or straight through, replacing two cylinders and a complex linkage.
Two-Depth Heavy Press
Provides a partial-close (100 mm) and full-close (200 mm) stroke for a forming press, using the 7068 N force at 0.9 MPa to handle two different material thicknesses in one cycle.
Staged Clamping Fixture
A welding fixture uses the retracted position for loading, the 100 mm stop for tacking, and the 200 mm full extension for final clamping, with sensors confirming each stage.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X100S the Right Cylinder?
Choose the SCT100 tandem when a single actuator must deliver three distinct mechanical positions without the complexity of two separate cylinders and external hard stops. If your force requirement is lower, stepping down to the 80 mm bore reduces the per-section push to 2513 N at 0.5 MPa, saving space and air consumption. For replacement, match the 100 mm bore, both 100 mm stroke sections, PT port thread, and the -S magnet option; the basic mounting allows direct drop-in where no flange or clevis was originally used.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 100 + 100 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 SCT100X100X100S FAQ
It provides three distinct mechanical stops because both stroke sections are equal at 100 mm. The reachable rod positions are 0 mm (fully retracted), 100 mm (one section actuated), and 200 mm (both sections actuated for full travel).
No, like all standard pneumatic cylinders, the SCT100X100X100S will not lock or hold its position if pressure is exhausted or lost; the rod can drift. If the load must be safely held at the 100 mm stop without live air, you need an external rod brake or a pilot-operated check valve in the circuit.
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