Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X160S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X160S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 160mm and 160mm give 3 controllable stop positions across a 320mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1160 mm
- Stroke 2160 mm
- Total travel320 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X160S
The SCT100X160X160S is a double-acting multi-position tandem cylinder that delivers three fixed, repeatable rod positions: fully retracted (0 mm), mid-stroke (160 mm), and full extension (320 mm). By pressurising either of its two 160 mm stroke sections independently or both together, this 100 mm bore actuator provides a robust 3927 N of push force per section at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, all managed through a durable tie-rod construction.
This specific model includes a factory-integrated magnet, allowing direct clamping of CMSG, DMSG, or EMSG reed and solid-state sensors directly to the 25 mm rod cylinder's barrel for precise end-of-stroke and mid-position signal confirmation. With a 29 mm adjustable air cushion at each end and a body length of 308 mm plus strokes, it is engineered for smooth deceleration of high-inertia loads in multi-stop material handling tasks, using standard PT1/2 ports.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X160S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X160S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 160 / 160 mm |
| Total travel | 320 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) | 160 mm |
| P2 (both extended) | 320 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 SCT100X160X160S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×160 | Stroke 1 (section 1) in mm. |
| ×160 | 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 SCT100X160X160S Is Used
3-Position Diverter Gate
Controls a gate on a conveyor line with three distinct positions: closed (0 mm), divert to lane A (160 mm), and divert to lane B (320 mm), using sensor feedback from the built-in magnet.
Two-Stage Clamping Fixture
Applies a preliminary low-force clamp at the 160 mm mid-position before a final high-force clamp at the full 320 mm extension, ensuring delicate parts are not damaged during the initial contact phase.
Multi-Depth Stop for Assembly
Provides a retract, partial advance, and full advance stroke for a press-fit operation, allowing an operator to insert a component to two different controlled depths with a single actuator.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X160S the Right Cylinder?
Choosing an SCT tandem cylinder over two individual cylinders with external stops simplifies plumbing and guarantees the three discrete stop positions are mechanically fixed and repeatable. For this 100 mm bore model, the per-section push force at 0.5 MPa is 3927 N; if your application requires a more compact footprint and lower force, consider stepping down to the 80 mm bore SCT80X160X160, which provides 2513 N of push per section. For a direct replacement, ensure the alternative unit matches the 100 mm bore, both 160 mm strokes, PT port thread, basic mounting, and the -S magnet option.
Given the 160 mm stroke per section, the total 320 mm of travel is well within standard limits, but if the rod is subjected to significant side loads during multi-stop positioning, external guiding or a rod-alignment coupler is recommended to prevent premature seal wear and ensure smooth cycling over the service life.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 160 + 160 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 SCT100X160X160S FAQ
Because both stroke sections are equal at 160 mm, this model provides 3 discrete mechanical stop positions: 0 mm (fully retracted), 160 mm (first section extended), and 320 mm (both sections extended, total travel).
No, the air cushion and multi-position feature do not act as a lock or brake. If supply pressure is lost or a directional valve is centered, the piston can drift. To securely hold a load at the 160 mm position without live pressure, you must add an external rod lock or a pilot-operated check valve.
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