Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X180S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X180S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 350mm and 180mm give 4 controllable stop positions across a 530mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1350 mm
- Stroke 2180 mm
- Total travel530 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X180S
The SCT100X350X180S is a double-acting, multi-position tandem cylinder that provides four fixed rod positions: fully retracted (0 mm), 180 mm, 350 mm, and the combined total travel of 530 mm. Each piston section delivers a powerful push force of 3927 N at 0.5 MPa, scaling to 7068 N at the maximum operating pressure of 0.9 MPa, making it a robust choice for heavy-duty sequencing tasks. The 100 mm bore unit features a 25 mm diameter rod, M20x1.5 rod thread, and PT1/2 ports, with a body length A(SCT) of 308 mm.
This specific model includes a built-in magnet, designated by the 'S' suffix, allowing for direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for precise end-of-stroke or intermediate position detection. The standard TPU seals and PT threads are configured for general industrial environments with an operating temperature range of -20 to +70 °C. With a 29 mm adjustable air cushion on each section, the cylinder effectively decelerates heavy loads at all four stop positions, ensuring smooth, repeatable motion without the complexity of servo systems.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X180S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X180S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 350 / 180 mm |
| Total travel | 530 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) | 350 mm |
| P2 (section 2) | 180 mm |
| P3 (both extended) | 530 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 SCT100X350X180S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×350 | Stroke 1 (section 1) in mm. |
| ×180 | 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 SCT100X350X180S Is Used
Two-Stage Part Sorting
Actuates a diverter gate to three distinct positions—180 mm, 350 mm, and 530 mm—to sort heavy packages or components onto three separate conveyor lanes from a single infeed point.
Multi-Depth Pressing
Provides two controlled pressing depths of 180 mm and 350 mm for a forming or assembly operation, with the full 530 mm stroke used for part ejection, all driven by a single cylinder.
Sequential Clamping Fixture
Operates a two-step clamping mechanism where the first 180 mm stroke closes a safety gate, and the subsequent 170 mm extension (to 350 mm) applies full clamping force, with sensor confirmation at each stage via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X350X180S the Right Cylinder?
Selecting the SCT100X350X180S is ideal when an application requires two distinct extension lengths from a single, compact actuator, eliminating the need to synchronize two separate cylinders. For applications requiring even higher force, a step up in bore is not available as 100 mm is the maximum for the SCT series; however, if a lower force is acceptable, the SCT80 bore provides 2513 N of push force per section at 0.5 MPa. A direct replacement must match the 100 mm bore, both the 350 mm and 180 mm strokes, PT port thread, and the integrated magnet for sensor compatibility.
Given the 350 mm stroke on the first section, careful attention must be paid to side-loading and rod deflection, particularly when the rod is fully extended to the 530 mm total travel position. It is recommended to guide the external load with a rigid bearing rail or rod guide to prevent bending moments on the 25 mm rod and ensure long seal life.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 350 + 180 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 SCT100X350X180S FAQ
This tandem cylinder provides 4 discrete mechanical stops because the two strokes are different lengths. The rod positions are: 0 mm (fully retracted), 180 mm (first section extended), 350 mm (second section extended), and 530 mm (both sections extended for total travel).
Yes, it is designed to replace two separate 100 mm bore cylinders with 350 mm and 180 mm strokes. A compatible replacement must match the 100 mm bore, both stroke lengths, PT port threads, and the 'S' magnet option for sensor mounting. The integrated design ensures the two strokes are always perfectly aligned on a single rod axis.
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