Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X120X30
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X120X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 120mm and 30mm give 4 controllable stop positions across a 150mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1120 mm
- Stroke 230 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X120X30
The SCT100X120X30 is a double-acting tandem cylinder that delivers four fixed rod positions—0 mm (fully retracted), 30 mm, 120 mm, and the total travel of 150 mm—by pressurising its two piston sections independently. With a 100 mm bore, each section generates a substantial 3927 N of push force at 0.5 MPa, making it suitable for heavy-duty material handling tasks where two intermediate stop points are required without external hard stops.
This tie-rod cylinder features a 25 mm diameter rod, a PT1/2 port, and an M20x1.5 rod thread for robust end connections. The integrated adjustable air cushion at each end, with a 29 mm cushion length, decelerates the 150 mm combined stroke smoothly. The body length A(SCT) is 308 mm, providing a compact footprint for a multi-stop actuator in this force class.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X120X30 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X120X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 120 / 30 mm |
| Total travel | 150 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) | 120 mm |
| P2 (section 2) | 30 mm |
| P3 (both extended) | 150 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 SCT100X120X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×120 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT100X120X30 Is Used
Two-Stage Clamping
A rapid 120 mm approach stroke positions the clamp near the workpiece, followed by a controlled 30 mm high-force clamping stroke, preventing collision damage and reducing cycle time.
Dual-Position Sorting Gate
The rod stops at 30 mm to divert small parts down one chute and extends to 150 mm to redirect larger items, using a single cylinder to manage two distinct sortation paths.
Two-Depth Press Insertion
Installs a bushing to a 120 mm depth with the first section, then uses the 30 mm section for a final high-force press-fit to a precise 150 mm total depth, ensuring consistent assembly.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X120X30 the Right Cylinder?
Choose the SCT100X120X30 when your process needs two distinct mid-stroke positions from a single actuator, eliminating the complexity of dual cylinders and sequencing valves. The 120 mm and 30 mm stroke sections provide a 150 mm total extension, ideal for a two-step advance with a short final push. If your force requirement is lower, stepping down to an 80 mm bore reduces per-section push to 2513 N at 0.5 MPa, which may allow a smaller footprint. For replacement, match the 100 mm bore, both the 120 mm and 30 mm strokes, PT port thread, and basic mounting configuration precisely to ensure identical stop positions.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 120 + 30 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 SCT100X120X30 FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 30 mm (stroke2 only), 120 mm (stroke1 only), and the total extended length of 150 mm (both sections pressurised). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a common rod line, giving you three controlled extension points from a single, compact actuator body. This eliminates the need for mounting and aligning two separate cylinders, simplifies pneumatic plumbing to three ports, and ensures the 30 mm and 120 mm intermediate positions are mechanically fixed relative to each other, improving repeatability over a dual-cylinder setup.
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