Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X100
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X100 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 100mm give 4 controllable stop positions across a 150mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 150 mm
- Stroke 2100 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X100
The SCT80X50X100 tandem cylinder delivers four precise, repeatable rod positions—0 mm, 50 mm, 100 mm, and the full 150 mm extension—using two independently controlled 50 mm and 100 mm piston sections on a single 25 mm diameter rod. Each section generates 2513 N of push force at 0.5 MPa, scaling up to 4523 N at the maximum operating pressure of 0.9 MPa, making it a robust actuator for multi-step material handling.
This double-acting, tie-rod design features a 28 mm adjustable air cushion in each section to decelerate the piston smoothly at each stop. The body length A is 296 mm, and the standard PT3/8 ports allow for straightforward integration. As a genuine AirTAC product, it provides a reliable, compact alternative to using two separate cylinders for two-stop applications.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X100 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X100 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 50 / 100 mm |
| Total travel | 150 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) | 50 mm |
| P2 (section 2) | 100 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 (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 SCT80X50X100
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT80X50X100 Is Used
Two-Stage Diverter Gate
Operates a chute or gate with a defined mid-position (50 mm) for splitting product flow and a full-open position (150 mm) for bypass, all from one compact cylinder.
Multi-Depth Clamping
Applies a light initial clamp at the 50 mm stop for delicate alignment, then advances to the full 150 mm stroke for high-force workholding, using the 100 mm section's thrust.
Sequential Part Feeding
Pushes a component to a first staging location at 100 mm, then retracts to a 50 mm intermediate position to release the next part, controlling a two-step feed cycle.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X100 the Right Cylinder?
Choose the SCT over two individual cylinders when you need to guarantee a fixed sequence of positions with a single, compact actuator, reducing plumbing and mounting complexity. If the 2513 N push force at 0.5 MPa per section is insufficient, stepping up to the 100 mm bore SCT100 model provides 3927 N per section. For a direct replacement, match the 80 mm bore, both the 50 mm and 100 mm strokes, PT3/8 port thread, and basic mounting configuration exactly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 100 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 SCT80X50X100 FAQ
This model provides 4 discrete rod positions: fully retracted (0 mm), the first section extended (50 mm), the second section extended (100 mm), and both sections extended for the total travel of 150 mm. The positions are fixed by the cylinder's internal mechanics, not infinitely adjustable.
No, the SCT cylinder does not mechanically lock at any position. If air pressure is lost or the control valve centers, the piston can drift. To securely hold a load at the 50 mm or any other intermediate stop, you must add an external rod brake or a pilot-operated check valve in the circuit.
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