Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X180X70
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X180X70 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 180mm and 70mm give 4 controllable stop positions across a 250mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1180 mm
- Stroke 270 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X180X70
The SCT80X180X70 is an 80 mm bore tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 70 mm, 180 mm, and the total extended travel of 250 mm. Each piston section generates 2513 N of push force at 0.5 MPa, with the 25 mm diameter rod providing robust support for the sequenced movements.
The cylinder body has a base length of 296 mm and uses a 28 mm air cushion at each end to decelerate the load quietly. With PT3/8 ports and an operating range up to 1.0 MPa, this genuine AirTAC unit is a space-saving alternative to mounting two separate actuators for a three-depth process.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X180X70 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X180X70 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 180 / 70 mm |
| Total travel | 250 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) | 180 mm |
| P2 (section 2) | 70 mm |
| P3 (both extended) | 250 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 SCT80X180X70
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×180 | Stroke 1 (section 1) in mm. |
| ×70 | 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 SCT80X180X70 Is Used
Two-Depth Pressing
Actuate a press tool to a 70 mm pre-press position for alignment, then extend to the full 180 mm stroke for final forming, all from one compact cylinder.
Diverter Gate Control
Use the 0, 70, 180, and 250 mm positions to direct packages to four separate conveyor lanes, simplifying the control architecture compared to multiple actuators.
Sequential Part Feeding
Advance a workpiece 70 mm for a drilling operation, then a further 110 mm (to the 180 mm stop) for a tapping station, achieving two process steps with one device.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X180X70 the Right Cylinder?
This four-position model suits applications requiring two independent extension lengths from a single rod line, eliminating the complexity of dual-cylinder setups. If higher force is needed for the 70 mm or 180 mm stops, stepping up to the 100 mm bore provides 3927 N push per section at 0.5 MPa. For a direct replacement, match an SCT of 80 mm bore with 180 mm and 70 mm strokes, PT port thread, and basic mounting. The 180 mm stroke section is within standard limits, but ensure the load is guided if side forces are present during the longer travel.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 180 + 70 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 SCT80X180X70 FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 70 mm (stroke 2 only), 180 mm (stroke 1 only), and 250 mm (both strokes extended). It does not offer infinitely variable positioning.
The force output is per actuated piston section, not a combined total. Each 80 mm bore section provides 2513 N pushing and 2268 N pulling at 0.5 MPa. The force does not double when both sections are pressurized simultaneously.
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