Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X450X250SH
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X450X250SH is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 450mm and 250mm give 4 controllable stop positions across a 700mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1450 mm
- Stroke 2250 mm
- Total travel700 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X450X250SH
The SCT100X450X250SH is a tandem multi-position cylinder that delivers four distinct, repeatable rod positions: 0 mm (fully retracted), 250 mm, 450 mm, and 700 mm (total travel). Each 100 mm bore piston section generates a powerful 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty sorting or multi-stage pressing.
This specific model is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and high-temperature Viton (FKM) seals (-H), extending the operating range from 0 to +150°C. The cylinder body has a length of 308 mm and uses a 25 mm diameter piston rod with an M20x1.5 male thread, providing robust guidance for the combined 700 mm stroke.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X450X250SH Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X450X250SH |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 450 / 250 mm |
| Total travel | 700 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) | 450 mm |
| P2 (section 2) | 250 mm |
| P3 (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 SCT100X450X250SH
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×450 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT100X450X250SH Is Used
High-Temp Diverter Gate
Uses the four positions to route hot materials on a conveyor to three different chutes, with the Viton seals ensuring reliable operation in elevated ambient temperatures up to 150°C.
Two-Stage Hot Press
Performs an initial rapid advance to 450 mm for a low-force close, then a final 250 mm high-force pressing stroke, with the magnet providing end-of-stroke confirmation for each stage.
Multi-Depth Assembly
Positions a tooling nest at three different working heights (250, 450, and 700 mm) for a sequential assembly process, eliminating the need for a complex servo-driven Z-axis.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X450X250SH the Right Cylinder?
Select the SCT100X450X250SH when your application requires four fixed mechanical stops without the complexity of servo controls or multiple actuators. The 450 mm and 250 mm section strokes provide asymmetric positioning ideal for processes with a long primary advance and a shorter secondary feed. For applications needing a similar force profile but in a smaller envelope, consider stepping down to the 80 mm bore SCT80, which provides 2513 N of push per section at 0.5 MPa.
As a direct replacement, match the 100 mm bore, the exact 450 mm and 250 mm strokes, PT port thread, and the -S magnet option. Given the 450 mm section stroke, ensure the load is guided or supported externally to prevent excessive side-loading and rod bending, especially when approaching the fully extended 700 mm position.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 450 + 250 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 SCT100X450X250SH FAQ
This 4-position cylinder provides discrete mechanical stops at 0 mm (fully retracted), 250 mm (stroke 2 extended alone), 450 mm (stroke 1 extended alone), and 700 mm (both sections extended). Each piston section delivers 3927 N of push force at 0.5 MPa.
Yes, it is a direct form-and-function replacement for two independently mounted SC100 cylinders previously used to achieve the same 250 mm and 450 mm stroke positions. It ensures perfect axial alignment between the two strokes and simplifies mounting to a single set of foot or flange brackets. Ensure the replacement matches the PT ports and -S magnet.
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