Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X50
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X50 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 50mm give 4 controllable stop positions across a 150mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1100 mm
- Stroke 250 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X50
The SCT80X100X50 tandem cylinder delivers four fixed rod positions—0 mm, 50 mm, 100 mm, and the full 150 mm extension—by pressurising its two piston sections independently. Each 80 mm bore section generates 2513 N of push force at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, making it a robust actuator for sequenced material handling.
A 25 mm diameter hard-chrome-plated rod and 28 mm of adjustable air cushion at each end manage deceleration smoothly. The tie-rod body has an overall length A of 296 mm, and the PT3/8 ports accept standard pneumatic fittings. Operating temperature spans -20 to +70 °C with the default TPU seals.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X50 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X50 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 100 / 50 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) | 100 mm |
| P2 (section 2) | 50 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 SCT80X100X50
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT80X100X50 Is Used
Two-Way Diverter Gate
The four positions (0, 50, 100, 150 mm) route product into three separate lanes. Retracted is lane one, 50 mm stroke opens lane two, 100 mm stroke opens lane three, and full extension can act as a reject or fourth path.
Multi-Depth Pressing
Achieve two controlled pressing depths in one cycle. The 50 mm stroke sets a pre-press or shallow form depth, while the 100 mm stroke provides a deeper final form. Full 150 mm extension can be used for part ejection.
Sequential Part Staging
Advance a workpiece through three precise positions on a linear transfer line. The cylinder indexes to 50 mm for a drilling station, 100 mm for tapping, and retracts from 150 mm after the part is cleared.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X100X50 the Right Cylinder?
Choose the SCT80X100X50 when a process needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. If the 2513 N push force at 0.5 MPa is more than required, stepping down to the 63 mm bore provides 1559 N per section; if higher force is needed, the 100 mm bore delivers 3927 N per section at the same pressure. This model replaces any AirTAC SCT80 with 100 mm and 50 mm section strokes, PT thread, and basic mounting.
For the 100 mm stroke section, ensure the load is guided if side forces are present, as the extended rod can experience bending moments. A replacement must match both stroke values exactly to preserve the programmed stop positions.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 50 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 SCT80X100X50 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (section two extended), 100 mm (section one extended), and 150 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT80X100X50 will drift or drop if air pressure is lost or the control valve is centred. To hold a load at any of the four positions without live pressure, you must add an external rod lock, a pilot-operated check valve, or a mechanical brake.
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