Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X260S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X260S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 260mm give 4 controllable stop positions across a 300mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 140 mm
- Stroke 2260 mm
- Total travel300 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X260S
The SCT100X40X260S is a double-acting tandem cylinder that delivers four fixed rod positions from a single compact assembly. By pressurising its two 100 mm bore sections independently or together, you get precise mechanical stops at 0 mm (fully retracted), 40 mm, 260 mm, and 300 mm (total travel). Each piston section provides a powerful 3927 N push force at 0.5 MPa, scaling to 7068 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for non-contact position feedback. It features a 25 mm diameter piston rod with an M20x1.5 male thread, PT1/2 ports, and a 29 mm adjustable air cushion at each end for smooth deceleration. The body length A(SCT) is 308 mm plus the combined stroke length.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X260S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X260S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 40 / 260 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.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 40 mm |
| P2 (section 2) | 260 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.
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 SCT100X40X260S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×260 | 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 SCT100X40X260S Is Used
Two-Stage Part Sorting
Use the 40 mm stop for a preliminary inspection gate and the 260 mm position to divert rejected parts onto a separate conveyor lane.
Multi-Depth Pressing
Achieve a shallow 40 mm pre-compression stroke followed by a full 260 mm insertion depth in assembly fixtures, with the 300 mm total travel for part ejection.
Sequential Clamping
Clamp a thin workpiece at the 40 mm position and a thicker one at 260 mm using the same actuator, with sensor confirmation at each stop via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X260S the Right Cylinder?
Choose the SCT100X40X260S when your process requires a long 260 mm primary stroke with a short 40 mm intermediate positioning step, eliminating the cost and complexity of two separate cylinders with external hard stops. The 100 mm bore generates substantial force for heavy-duty sorting or clamping; if your load is lighter, stepping down to an 80 mm bore SCT80X40X260S reduces the per-section push force to about 2513 N at 0.5 MPa, which may lower air consumption. For a direct replacement, match the 100 mm bore, both 40 mm and 260 mm section strokes, PT port thread, and the -S magnet option. Since the 260 mm section stroke is below 300 mm, rod side-loading from extended travel is typically manageable without an external guide, but always verify your load's centre of gravity.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 260 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 SCT100X40X260S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 40 mm (section 1 extended), 260 mm (section 2 extended), and 300 mm (both sections extended for total travel).
Yes, it directly replaces a setup using two individual cylinders for a two-position sequence, provided the strokes are 40 mm and 260 mm. It ensures the stops are mechanically fixed and reduces overall length and mounting hardware. A replacement must match the 100 mm bore, both strokes, PT ports, and the -S magnet.
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