Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X200
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X200 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 200mm give 4 controllable stop positions across a 225mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 125 mm
- Stroke 2200 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X200
The SCT80X25X200 is an 80 mm bore tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 25 mm, 200 mm, and the combined total travel of 225 mm. Each piston section generates 2513 N of push force at 0.5 MPa, giving you independent control over two distinct extension points from a single compact tie-rod body.
With a 25 mm diameter rod and PT3/8 ports, this model uses an adjustable air cushion (28 mm length) for smooth deceleration at both stroke ends. The body length A measures 296 mm, making it a space-efficient alternative to mounting two separate cylinders for a two-step linear sequence.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X200 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X200 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 25 / 200 mm |
| Total travel | 225 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) | 25 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 225 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 SCT80X25X200
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT80X25X200 Is Used
Two-Stage Clamping
Extend to 25 mm for a low-force pre-clamp, then drive to 200 mm for full-pressure holding on assembly fixtures.
Dual-Position Sorting Gate
Use the 25 mm and 200 mm stops to divert parts to two separate chutes on a conveyor line from one actuator.
Step Drilling or Tapping
Control a tool slide to a 25 mm rapid-approach position, then feed 200 mm for the working stroke in a machining cell.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X200 the Right Cylinder?
Choose the SCT80X25X200 when your process needs a short initial advance followed by a longer secondary stroke—common in two-stage clamping or part ejection. If 2513 N per section is insufficient, stepping up to the 100 mm bore provides 3927 N push at the same 0.5 MPa pressure. For a direct replacement, match the 80 mm bore, both 25 mm and 200 mm strokes, PT port thread, and basic mounting configuration. Since the second stroke reaches 200 mm, ensure the rod is adequately guided if the load applies a significant side force, or consider adding an external linear guide to prevent rod bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 200 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 SCT80X25X200 FAQ
It provides 4 discrete mechanical stops: 0 mm (home), 25 mm (section one extended), 200 mm (section two extended), and 225 mm (both sections extended). It is not an infinitely variable servo cylinder.
Yes, if you need a two-step linear sequence. The SCT80X25X200 integrates both strokes into one tie-rod body, reducing mounting hardware and alignment complexity. Ensure the replacement matches the 80 mm bore, 25 mm and 200 mm strokes, PT ports, and basic mounting.
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