Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X150S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X150S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 150mm give 4 controllable stop positions across a 200mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 150 mm
- Stroke 2150 mm
- Total travel200 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X150S
The SCT100X50X150S is a double-acting multi-position cylinder that delivers four fixed stop locations along its 200 mm total travel. By pressurising the two piston sections independently or together, the rod extends to 0 mm (fully retracted), 50 mm, 150 mm, or the full 200 mm. Each section produces 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.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing. The 100 mm bore cylinder uses a 25 mm diameter rod with M20x1.5 threads and PT 1/2 ports. Its robust tie-rod construction provides a body length A of 308 mm and an effective cushion length of 29 mm for reliable end-of-stroke deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X150S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X150S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 150 mm |
| Total travel | 200 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) | 50 mm |
| P2 (section 2) | 150 mm |
| P3 (both extended) | 200 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 SCT100X50X150S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×150 | 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 SCT100X50X150S Is Used
Two-Stage Sorting Gate
Operates a diverter gate with three distinct open positions (50, 150, and 200 mm) plus a closed position, routing packages of varying heights to different conveyor lines from a single infeed.
Multi-Depth Stamping Press
Provides two controlled pressing depths in a single cycle. The first section extends 50 mm for a shallow form, and the second section adds 150 mm of travel for a full-depth draw, all without changing tooling.
Sequential Clamping Fixture
Clamps a workpiece in two stages. The rod first advances 50 mm to apply a light locating pressure, then extends to the full 200 mm to engage a high-force main clamp, ensuring the part is seated correctly before full pressure is applied.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X150S the Right Cylinder?
This four-position SCT replaces complex setups that might otherwise require two separate cylinders and external hard stops, simplifying pneumatic circuits for multi-step actuation. When selecting, verify that the 3927 N push force per section at 0.5 MPa meets the load requirement; if a lighter, more compact solution is acceptable, consider stepping down to an 80 mm bore, which provides 2513 N of push per section. For a direct replacement, the new cylinder must match the 100 mm bore, both the 50 mm and 150 mm strokes, PT port threads, and the basic mounting style. Since the total combined stroke reaches 200 mm, ensure the rod is adequately guided if the application involves any significant side loading to prevent bending and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 150 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 SCT100X50X150S FAQ
This tandem cylinder provides four discrete mechanical stops. The rod positions are 0 mm (fully retracted), 50 mm (first section extended), 150 mm (second section extended), and 200 mm (both sections extended for total travel). The position is selected by directing air pressure to the appropriate cylinder port.
The SCT integrates two strokes on a single common rod, guaranteeing a fixed spatial relationship between the stop positions and reducing the overall footprint and mounting complexity. It eliminates the need to synchronize two separate cylinders and their mountings, providing a more compact and mechanically simpler solution for applications requiring up to four discrete positions.
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