Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X50S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 50mm give 4 controllable stop positions across a 175mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1125 mm
- Stroke 250 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X50S
The AirTAC SCT80X125X50S is a tandem double-acting cylinder delivering four fixed rod positions: 0 mm, 125 mm, 50 mm, and a total extended length of 175 mm. Each piston section generates a push force of 2513 N at 0.5 MPa, making it suitable for tasks requiring two different intermediate stops without complex servo controls.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the 296 mm tie-rod body for precise position feedback. The 25 mm diameter rod and PT3/8 ports handle flow efficiently, while the 28 mm air cushion at each end provides adjustable deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X50S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 125 / 50 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) | 125 mm |
| P2 (section 2) | 50 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 SCT80X125X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×125 | 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 SCT80X125X50S Is Used
Two-Stop Sorting Gate
Uses the 125 mm and 50 mm strokes to divert parts to two different conveyor lanes from a single retracted home position.
Dual-Depth Pressing
Achieves a shallow 50 mm press depth and a deeper 125 mm depth in sequence, controlled by pressurizing each section independently.
Multi-Level Feeding
Pushes components to two distinct positions at 125 mm and 175 mm total travel for a two-step assembly process.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X50S the Right Cylinder?
Choose the SCT80 bore when your application needs a push force around 2513 N per section at standard plant pressure. If a higher force is required, stepping up to the SCT100 bore provides 3927 N per section. For replacement, match the 80 mm bore, both the 125 mm and 50 mm strokes, the PT port thread, and the integrated magnet sensor option. Since the total travel is 175 mm, ensure the rod is supported if side loads are present during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 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 SCT80X125X50S FAQ
It provides four discrete positions: fully retracted at 0 mm, an intermediate stop at 50 mm, another at 125 mm, and full extension at 175 mm. These are fixed by the two different stroke lengths.
Yes, the -S suffix indicates a built-in magnet, making it compatible with AirTAC CMSG, DMSG, and EMSG series reed or solid-state sensors that clamp directly onto the tie-rod body.
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Standard models usually ship in 3-4 days.
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