Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X350S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 350mm give 4 controllable stop positions across a 375mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 125 mm
- Stroke 2350 mm
- Total travel375 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X350S
The SCT100X25X350S is a 100 mm bore multi-position tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 25 mm, 350 mm, and the combined total travel of 375 mm. Each piston 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, making it suitable for heavy-duty material handling tasks that require two distinct extended stops.
This model includes a built-in magnetic piston ring, designated by the 'S' suffix, allowing for direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The cylinder body has an A(SCT) length of 308 mm and uses a 25 mm diameter rod with M20x1.5 threads, providing robust guidance for the 375 mm total stroke.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X350S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 25 / 350 mm |
| Total travel | 375 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) | 25 mm |
| P2 (section 2) | 350 mm |
| P3 (both extended) | 375 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 SCT100X25X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×25 | 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 SCT100X25X350S Is Used
Two-Stage Clamping
A 25 mm initial stroke positions a clamp near the workpiece, and a subsequent 350 mm stroke applies full clamping force, preventing collision with tall fixtures.
Selective Part Diverting
The rod extends to 25 mm to nudge a part onto a branch line or to 350 mm to push it fully across a main conveyor, enabling 3-lane sorting from one actuator.
Multi-Depth Pressing
Performs a shallow 25 mm pre-press for alignment, then a deep 350 mm insertion stroke for final assembly, all with sensor-confirmed position verification via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X350S the Right Cylinder?
Choose the SCT100X25X350S when your application needs a compact, single-axis solution to achieve two different extended positions, such as a primary advance and a secondary offset, without the complexity of two separate cylinders and their mounting hardware. If the 3927 N push force per section at 0.5 MPa exceeds your requirement, stepping down to an 80 mm bore SCT reduces the per-section force to 2513 N. For a direct replacement, match the 100 mm bore, both the 25 mm and 350 mm strokes, the PT port thread, and the integrated magnet feature.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 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 SCT100X25X350S FAQ
This 4-position cylinder stops at 0 mm (fully retracted), 25 mm, 350 mm, and the total combined stroke of 375 mm. The positions are achieved by pressurizing the first section, the second section, or both simultaneously.
The SCT tandem cylinder provides two discrete extended stops on a single common rod line, which saves significant space and eliminates the need to synchronize two separate actuators. It is ideal for applications requiring different stroke lengths from the same mounting point, but it does not double the force output; each section provides the standard 3927 N push force at 0.5 MPa.
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