Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X5X120
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X5X120 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 5mm and 120mm give 4 controllable stop positions across a 125mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 15 mm
- Stroke 2120 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X5X120
The SCT80X5X120 is an 80 mm bore tandem cylinder that creates four precise rod positions: fully retracted (0 mm), 5 mm, 120 mm, and the combined 125 mm total travel. Each piston section delivers a push force of 2513 N at 0.5 MPa, scaling up to 4523 N at 0.9 MPa, making it suitable for tasks requiring a short initial index and a longer secondary stroke.
Built on a rugged tie-rod design with a 25 mm diameter rod and PT3/8 ports, this cylinder uses adjustable pneumatic cushioning over a 28 mm length to manage end-of-stroke deceleration. The body length A(SCT) is 296 mm, providing a compact envelope for the combined 125 mm stroke capability.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X5X120 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X5X120 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 5 / 120 mm |
| Total travel | 125 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) | 5 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 125 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 SCT80X5X120
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×5 | Stroke 1 (section 1) in mm. |
| ×120 | 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 SCT80X5X120 Is Used
Two-Stage Part Ejection
Uses the 5 mm stroke to break a part free from a fixture, then the 120 mm stroke to fully eject it onto a conveyor, preventing part damage.
Dual-Rate Sorting Gate
The short stroke provides a partial gate opening for small items, while the full 125 mm travel opens the gate completely for larger packages.
Offset Clamping & Feed
Positions a clamp at 5 mm for light hold-down during alignment, then advances to 125 mm to feed the clamped assembly into a press.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X5X120 the Right Cylinder?
This four-position actuator replaces setups that would otherwise need two separate cylinders and a mounting bracket, simplifying plumbing and saving space. The 5 mm stroke on the first section is ideal for a precise short pick or registration move, while the 120 mm stroke handles the main transfer. If higher force is required, stepping up to the 100 mm bore provides 3927 N of push per section at 0.5 MPa. For a drop-in replacement, match the 80 mm bore, the exact strokes of 5 mm and 120 mm, PT port threads, and basic mounting configuration.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 5 + 120 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 SCT80X5X120 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 5 mm (first section extended), 120 mm (second section extended), and 125 mm (both sections extended).
Yes, if the application requires a 5 mm and a 120 mm stroke on the same rod axis. The SCT80X5X120 integrates both strokes into one tie-rod body, eliminating the need for external couplers and ensuring the two positions are always on the same centerline.
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