Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X350S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 350mm and 350mm give 3 controllable stop positions across a 700mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1350 mm
- Stroke 2350 mm
- Total travel700 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X350S
The SCT100X350X350S is a double-acting tandem cylinder that delivers three fixed rod positions—0 mm, 350 mm, and 700 mm total travel—by pressurising its two 100 mm bore sections independently or together. Each section generates a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, driven by a robust 25 mm diameter rod.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The cylinder body has a base length of 308 mm, features a 29 mm adjustable air cushion in each section for smooth deceleration, and uses standard PT1/2 port threads. It is a genuine AirTAC pneumatic component built for reliable multi-stop operation.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X350S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 350 / 350 mm |
| Total travel | 700 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 350 mm |
| P2 (both extended) | 700 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 SCT100X350X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×350 | Stroke 1 (section 1) in mm. |
| ×350 | 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 SCT100X350X350S Is Used
3-Position Sorting Gate
Direct packages or parts to three different conveyor lanes by stopping the rod at 0 mm (lane 1), 350 mm (lane 2), and 700 mm (lane 3). The built-in magnet provides sensor confirmation at each discrete stop.
Two-Depth Press Operation
Perform a two-stage pressing or forming cycle. The first section extends 350 mm for an initial forming depth, and pressurising both sections drives the tool to the full 700 mm for the final form, all with one compact actuator.
Multi-Stop Material Feed
Advance material like bar stock or strip to two fixed lengths. The tandem cylinder pushes a feeder mechanism to a 350 mm intermediate stop and a 700 mm final stop, with the CMSG sensors verifying the position before the next machine cycle.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X350S the Right Cylinder?
Choosing this tandem cylinder over two separate actuators or an SC with external hard stops simplifies the mechanical design when a load must move to three precise locations. The 350 mm stroke per section provides ample reach, but if the application requires less travel, consider stepping down to an SCT100X300X300S. For higher thrust demands, verify if the 100 mm bore’s 3927 N push at 0.5 MPa is sufficient before moving to a larger custom solution, as 100 mm is the largest standard SCT bore.
When replacing an existing unit, the match must be exact: an SCT100 with both strokes set to 350 mm, PT1/2 ports, a basic mount, and the -S magnet. Because each section has a 350 mm stroke, ensure the external guide system is robust enough to handle the side-load moment on the fully extended 25 mm rod to prevent bending, especially if the load is not guided.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 350 + 350 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 SCT100X350X350S FAQ
It provides three distinct rod positions: 0 mm (fully retracted), 350 mm (first section extended), and 700 mm (both sections extended, which is the total travel). Since the two strokes are equal, the 350 mm and 700 mm positions are achieved by pressurising one or both cylinder sections.
Yes, it is a direct functional replacement that uses a common rod line to achieve the same two-stroke motion in a single, more compact assembly. The replacement must match the 100 mm bore, both 350 mm strokes, the PT1/2 port thread, and the -S magnet option for sensor compatibility.
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