Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X25S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 25mm give 4 controllable stop positions across a 225mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1200 mm
- Stroke 225 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X25S
The SCT80X200X25S is an 80 mm bore multi-position pneumatic cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 25 mm, 200 mm, and a total extended travel of 225 mm. Each of its two independent piston sections generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, driven through a rigid 25 mm diameter rod.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. With a body length of 296 mm and a 28 mm adjustable air cushion, it provides reliable deceleration. The standard PT port thread is PT3/8.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X25S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 200 / 25 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) | 200 mm |
| P2 (section 2) | 25 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 SCT80X200X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×200 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT80X200X25S Is Used
Two-Stage Sorting Gate
Uses the 25 mm stop for a partial gate opening and the 200 mm stroke for a full diversion path, directing packages to one of two lanes from a single conveyor point.
Dual-Depth Pressing
Provides a light touch at the 25 mm position for pre-crushing or locating, followed by a full 200 mm power stroke for the main forming operation, all with sensor confirmation via the built-in magnet.
Multi-Stop Clamping Fixture
Clamps thin workpieces at the 25 mm stop and thicker assemblies at the 200 mm position, with the 225 mm total travel used for part loading clearance.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X25S the Right Cylinder?
Choose the SCT80X200X25S when your process requires a long primary stroke of 200 mm and a short secondary stop at 25 mm, eliminating the need for two separate actuators and their associated valving. If higher force is needed, stepping up to the 100 mm bore provides 3927 N of push per section at 0.5 MPa. For a direct replacement, match the 80 mm bore, both the 200 mm and 25 mm strokes, PT3/8 ports, and the integrated magnet (-S). Because the primary stroke reaches 200 mm, ensure the load is guided or supported to prevent excessive side-loading and rod bending during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 200 + 25 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 SCT80X200X25S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (section two extended), 200 mm (section one extended), and 225 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a single common rod, guaranteeing coaxial alignment and reducing the footprint compared to mounting two separate SC80 cylinders back-to-back. It simplifies plumbing and control logic for achieving the four fixed stop positions, though the per-section force remains identical to a single SC80 of the same stroke.
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