
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X200X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 100mm give 4 controllable stop positions across a 300mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
The SCT100X200X100S is a tandem multi-position cylinder that delivers four fixed rod positions from its two piston sections: 0 mm (fully retracted), 100 mm, 200 mm, and the total travel of 300 mm. Each section generates a powerful 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, driven by a 25 mm diameter rod.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The cylinder body has an overall length of 308 mm, uses PT1/2 ports, and features an adjustable pneumatic cushion of 29 mm at each end to manage deceleration. It is a genuine AirTAC unit built for reliable multi-stop sequencing.
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X200X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 200 / 100 mm |
| Total travel | 300 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.
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 200 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 300 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.
| 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.
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×200 | Stroke 1 (section 1) in mm. |
| ×100 | 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.
Directs heavy packages or pallets to four different conveyor lanes by pressurizing section 1, section 2, or both, achieving precise stops at 0, 100, 200, and 300 mm.
Provides a partial advance to 100 mm for a light forming operation and a full advance to 300 mm for final compression, eliminating the need for a servo-driven press in simple two-depth cycles.
Transfers large castings or weldments between four stations on an automated line, using the 200 mm and 100 mm strokes to service staggered machine infeed points.
Choose the SCT100X200X100S when your application requires a 100 mm bore to move heavy loads to four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. If your load is lighter, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption and physical size. For a direct replacement, match the 100 mm bore, the 200 mm and 100 mm section strokes, PT port thread, and ensure the replacement carries the -S magnet suffix for sensor compatibility.
With a 200 mm stroke on the first section, consider the potential for side loading on the 25 mm rod. If the load is not guided externally, adding a linear guide or rod support is recommended to prevent bending moments and premature seal wear.
Multi-position checklist
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 100 mm (section 2 extended), 200 mm (section 1 extended), and 300 mm (both sections extended). It does not offer infinitely variable positioning.
Yes, it is a direct form-and-fit replacement. The -S suffix simply adds a built-in magnetic ring, which does not alter the cylinder's external dimensions or port locations. It allows you to add or upgrade to CMSG/DMSG sensors for position feedback.
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