Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X60S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X60S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 300mm and 60mm give 4 controllable stop positions across a 360mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1300 mm
- Stroke 260 mm
- Total travel360 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X60S
The SCT80X300X60S is a double-acting multi-position cylinder that delivers four fixed rod positions from a single compact assembly: fully retracted (0 mm), the first section extended (60 mm), the second section extended (300 mm), and both sections extended for the full 360 mm total travel. Each 80 mm bore piston section generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, driven through a robust 25 mm diameter piston rod.
This model includes a factory-installed magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state sensors to be clamped directly onto the tie-rod barrel for precise, non-contact position sensing at each stop. With a body length of 296 mm and an adjustable air cushion of 28 mm at each end, the cylinder decelerates the 360 mm stroke smoothly, making it suitable for sorting gates or multi-depth pressing operations that require sensor feedback at every position.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X60S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X60S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 300 / 60 mm |
| Total travel | 360 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| 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, 28 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) | 300 mm |
| P2 (section 2) | 60 mm |
| P3 (both extended) | 360 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SCT80X300X60S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×300 | Stroke 1 (section 1) in mm. |
| ×60 | 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 SCT80X300X60S Is Used
4-Position Diverter Gate
Uses the four discrete stops (0, 60, 300, 360 mm) to route packages or components to four separate conveyor lanes. The built-in magnet confirms the gate's position at each lane, ensuring positive sorting without misdirects.
Two-Depth Press with Eject
The 60 mm stroke performs a shallow pre-press or clamp, while the 300 mm stroke executes the main forming depth. The combined 360 mm position can be used for a part-eject sequence, all from one actuator with sensor verification at each phase.
Multi-Stop Assembly Feed
Advances a pallet or component through a 300 mm primary index, with a 60 mm secondary lift to engage or disengage a locating pin. The CMSG/DMSG sensors on the SCT80X300X60S provide a signal at each of the four positions to sequence the next operation.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X60S the Right Cylinder?
An SCT tandem cylinder is the right choice when your application needs two or more discrete, repeatable stop positions without the complexity of servo control or the bulk of two separate cylinders with external stops. The SCT80X300X60S provides a long 300 mm primary stroke and a shorter 60 mm secondary stroke, ideal for a main transfer motion with a secondary lift or eject function. If your force requirement is lower, consider stepping down to the 63 mm bore (1559 N push at 0.5 MPa); for higher thrust, the 100 mm bore delivers 3927 N per section at the same pressure.
For a direct replacement, match the 80 mm bore, both the 300 mm and 60 mm strokes, PT port thread, and the built-in magnet (-S suffix). Since the 300 mm stroke section extends significantly, ensure the load is guided externally or that the rod is adequately supported to prevent side-loading and bending, which can cause premature seal wear and rod deflection.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 300 + 60 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 SCT80X300X60S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 60 mm (first section extended), 300 mm (second section extended), and 360 mm (both sections extended). The stops are fixed by the two section strokes and are selected by pressurizing the appropriate cylinder ports.
No, the SCT cylinder does not have a mechanical locking or holding brake. If air pressure is exhausted or lost, the piston rod can drift or drop under load. To hold a load at any of the four positions without continuous pressure, you must add an external rod lock, a pilot-operated check valve, or a separate mechanical brake.
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