Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X175X80S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X175X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 175mm and 80mm give 4 controllable stop positions across a 255mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1175 mm
- Stroke 280 mm
- Total travel255 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X175X80S
The SCT100X175X80S is a 100 mm bore multi-position pneumatic cylinder that delivers four distinct rod positions by combining two piston sections on a common rod line. The reachable stops are 0 mm (fully retracted), 80 mm, 175 mm, and the total extended travel of 255 mm, selected by pressurising either section individually or both together.
Each actuated section generates a push force of 3927 N at 0.5 MPa and can reach 7068 N at the maximum operating pressure of 0.9 MPa, with a pull force of 3681 N at 0.5 MPa. The unit features a 25 mm diameter rod, M20x1.5 rod thread, and PT1/2 ports. A built-in magnet (denoted by the -S suffix) allows CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing, while the 29 mm adjustable air cushion at each end decelerates the 308 mm body length assembly smoothly.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X175X80S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X175X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 175 / 80 mm |
| Total travel | 255 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/2 |
| 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, 29 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) | 175 mm |
| P2 (section 2) | 80 mm |
| P3 (both extended) | 255 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCT100X175X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×175 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT100X175X80S Is Used
Four-Way Part Sorting
Directs components to four separate chutes or conveyor lanes by stopping the rod at 0, 80, 175, or 255 mm, each corresponding to a different diverter gate angle.
Two-Depth Press Operation
Executes a shallow 80 mm pressing stroke for pre-forming and a deeper 175 mm stroke for final forming, with a combined 255 mm stroke for part ejection, all from one compact actuator.
Multi-Stop Material Feeding
Advances strip or bar stock to three precise lengths (80, 175, 255 mm) in a progressive stamping or cutting die, eliminating the need for a servo-driven feeder.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X175X80S the Right Cylinder?
This four-position actuator replaces setups that would otherwise require two separate cylinders with external hard stops, simplifying the mechanical design and reducing the number of valves and fittings. When the 3927 N per-section push force at 0.5 MPa is more than required, consider stepping down to the SCT80 series, which provides 2513 N of push per section at the same pressure. If higher force is needed, verify the application does not exceed the SCT100's maximum bore limit.
For a drop-in replacement, match the 100 mm bore, both strokes (175 mm and 80 mm), PT port thread, basic mounting, and the -S magnet option. Because the 175 mm stroke section is substantial, ensure the external load is guided or supported to prevent excessive side-loading and rod bending during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 175 + 80 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 SCT100X175X80S FAQ
It provides four discrete mechanical stop positions: 0 mm (fully retracted), 80 mm (section 2 extended), 175 mm (section 1 extended), and 255 mm (both sections extended). These are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it is designed to do exactly that. The tandem configuration consolidates two strokes into one rod line, reducing the number of valves, mounting brackets, and alignment steps. Ensure the replacement matches the 100 mm bore, 175 mm and 80 mm strokes, PT ports, and the -S magnet option for sensor compatibility.
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