Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X150S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X150S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 150mm give 4 controllable stop positions across a 175mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 125 mm
- Stroke 2150 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X150S
The SCT80X25X150S is an 80 mm bore tandem cylinder delivering four fixed rod positions: 0 mm (fully retracted), 25 mm, 150 mm, and a combined 175 mm total travel. Each piston section generates 2513 N of push force at 0.5 MPa, making it suitable for tasks requiring two distinct mid-stroke stopping points without complex servo controls.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or mid-position detection. The 25 mm diameter rod and PT3/8 ports handle standard pneumatic connections, with a 28 mm cushion length at each end to manage deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X150S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X150S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 25 / 150 mm |
| Total travel | 175 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) | 150 mm |
| P3 (both extended) | 175 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 SCT80X25X150S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×150 | 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 SCT80X25X150S Is Used
Two-Stage Sorting Gate
Operates a diverter gate with a partial-open position at 25 mm for small items and a full-open position at 175 mm for larger packages, using sensors to confirm each stop.
Dual-Depth Clamping
Provides two distinct clamping depths for a fixture, moving to a 25 mm pre-clamp position before applying full force at the 150 mm stroke for different workpiece thicknesses.
Multi-Stop Pusher
Acts as a pusher on a conveyor line, stopping at 25 mm to align a product and then extending to 175 mm to fully transfer it onto a perpendicular track.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X150S the Right Cylinder?
Choose the SCT80X25X150S when your process needs two separate, fixed extension lengths from a single actuator. It replaces setups using two individual cylinders or an SC cylinder with external hard stops. If your force requirement is lower, the 63 mm bore SCT provides 1559 N push per section at 0.5 MPa. For replacement, match the 80 mm bore, both 25 mm and 150 mm strokes, PT ports, basic mounting, and the -S magnet option exactly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 150 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 SCT80X25X150S FAQ
It provides four discrete rod positions: 0 mm, 25 mm, 150 mm, and 175 mm. These are achieved by pressurizing the first section, the second section, or both simultaneously.
Yes, the -S suffix indicates a built-in magnet, making it fully compatible with AirTAC's CMSG, DMSG, and EMSG series reed and solid-state sensors that clamp directly onto the cylinder's tie-rods.
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