Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X60X40S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X60X40S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 60mm and 40mm give 4 controllable stop positions across a 100mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 160 mm
- Stroke 240 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X60X40S
The SCT100X60X40S is a 100 mm bore multi-position tandem cylinder delivering four fixed rod positions: 0 mm (fully retracted), 60 mm, 40 mm, and the combined total travel of 100 mm. This discrete-stop design is achieved by pressurising either of the two piston sections independently or both together, offering a robust mechanical alternative to servo systems for repetitive positioning tasks. Each actuated section provides a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the tie-rod barrel for precise end-of-stroke or intermediate position confirmation. The 25 mm diameter piston rod and PT 1/2 port threads are standard for the 100 mm bore, with an adjustable air cushion length of 29 mm at each end to manage deceleration. The body length A(SCT) is 308 mm, providing a compact footprint for the combined 100 mm of total travel.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X60X40S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X60X40S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 60 / 40 mm |
| Total travel | 100 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) | 60 mm |
| P2 (section 2) | 40 mm |
| P3 (both extended) | 100 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 SCT100X60X40S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×60 | 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 SCT100X60X40S Is Used
Two-Stage Diverter Gate
Actuates a sorting gate to three distinct positions—neutral, divert left, and divert right—using the 40 mm and 60 mm strokes to route packages on a conveyor line without needing two separate actuators.
Multi-Depth Clamping Fixture
Provides two preset clamping depths for different workpiece thicknesses. The 40 mm stroke handles thin parts, while the 60 mm stroke accommodates thicker ones, with full retraction for loading and unloading.
Sequential Part Ejection
Ejects parts from a die in two stages: a short 40 mm push to break the part free, followed by a longer 60 mm stroke to clear the tooling zone, improving cycle time and preventing part damage.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X60X40S the Right Cylinder?
Choose the SCT when your application requires a fixed number of mechanical stops without the complexity of closed-loop servo control. This four-position unit (0, 40, 60, 100 mm) is ideal when a sequence demands two distinct intermediate positions. If higher thrust is needed, the 100 mm bore is the largest in the SCT range; for a lighter, more compact solution, consider stepping down to the 80 mm bore, which provides 2513 N of push force per section at 0.5 MPa. For replacement, match the bore, both stroke lengths (60 mm and 40 mm), the PT port thread, and the integrated magnet (-S) to ensure sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 60 + 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 SCT100X60X40S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 60 mm (section 1 extended), 40 mm (section 2 extended), and 100 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT does not have a mechanical locking or brake feature. If air pressure is lost or a directional valve is centered, the piston rod can drift or drop under load. To hold a position without live pressure, you must add an external rod lock or a pilot-operated check valve.
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