Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X140X525S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X140X525S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 140mm and 525mm give 4 controllable stop positions across a 665mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1140 mm
- Stroke 2525 mm
- Total travel665 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X140X525S
The SCT100X140X525S is a tandem multi-position pneumatic cylinder that delivers four discrete rod stops from a single tie-rod body: 0 mm (fully retracted), 140 mm, 525 mm, and the combined total travel of 665 mm. Each piston section generates a powerful 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the 0.9 MPa maximum operating pressure, making it suitable for heavy-duty sorting or multi-stage pressing.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG, DMSG, or EMSG sensors, enabling precise end-of-stroke or intermediate position sensing without external brackets. The 100 mm bore uses a 25 mm diameter piston rod with an M20x1.5 thread and PT1/2 ports. Note that the 525 mm section stroke exceeds the standard 500 mm limit, classifying it as a made-to-order non-standard stroke length.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X140X525S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X140X525S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 140 / 525 mm |
| Total travel | 665 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). This configuration exceeds the 500 mm standard section stroke, so it is a non-standard / made-to-order build. 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) | 140 mm |
| P2 (section 2) | 525 mm |
| P3 (both extended) | 665 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 SCT100X140X525S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×140 | Stroke 1 (section 1) in mm. |
| ×525 | 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 SCT100X140X525S Is Used
Multi-Stop Heavy Part Transfer
Uses the 140 mm and 665 mm positions to move large castings between three machining stations on a transfer line, with the intermediate 525 mm stop used for a vision inspection step.
Two-Depth Press Operation
Achieves a light pre-crimp at the 525 mm extension and a full-force final press at the total 665 mm travel, all within one compact tandem cylinder unit.
Diverting Heavy Pallets
Controls a diverter gate on a pallet conveyor, using the 140 mm stop for one lane and the 665 mm full extension to push pallets onto a second, higher-speed lane.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X140X525S the Right Cylinder?
Select this SCT when your process needs a heavy thrust actuator that can stop at four distinct positions without the complexity of two separate cylinders and external hard stops. The 100 mm bore provides 3927 N of push per section at 0.5 MPa; if your load is lighter, consider stepping down to the 80 mm bore (2513 N push) to reduce air consumption and physical envelope. For replacement, match the 100 mm bore, both strokes (140 mm and 525 mm), PT port thread, and the -S magnet option. Because the second stroke is long at 525 mm, evaluate the rod's side-loading capacity and consider adding an external guide rail to prevent bending under off-center loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 140 + 525 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 SCT100X140X525S FAQ
It provides four distinct mechanical stop positions: 0 mm (fully retracted), 140 mm, 525 mm, and the total combined travel of 665 mm. These are fixed by the two internal piston sections and are selected by pressurizing section one, section two, or both simultaneously.
Yes, in many cases. A single SCT100X140X525S can replace a setup using two SC100 cylinders with external stops, saving space and eliminating the need to synchronize two separate actuators. Ensure the replacement matches the 100 mm bore, both 140 mm and 525 mm strokes, PT port threads, and the integrated magnet sensor option.
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