Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X90S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X90S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 90mm give 4 controllable stop positions across a 170mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 180 mm
- Stroke 290 mm
- Total travel170 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X90S
The SCT100X80X90S is a tandem multi-position pneumatic cylinder that delivers four distinct rod stops: 0 mm (fully retracted), 80 mm, 90 mm, and 170 mm (total travel). Each 100 mm bore section generates a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, making it a powerful actuator for heavy-duty discrete positioning tasks.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable position feedback at every stop. The 25 mm diameter rod and 29 mm adjustable air cushion at each end help manage inertial loads smoothly, while the PT 1/2 port threads ensure straightforward pneumatic connections.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X90S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X90S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 80 / 90 mm |
| Total travel | 170 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) | 80 mm |
| P2 (section 2) | 90 mm |
| P3 (both extended) | 170 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 SCT100X80X90S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×90 | 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 SCT100X80X90S Is Used
Multi-Stop Diverter Gates
Precisely positions a diverter chute or gate to four distinct paths (retracted, mid-1, mid-2, extended) in a material handling line using the 0, 80, 90, and 170 mm stops.
Two-Depth Press Operations
Executes a two-stage pressing or forming sequence where the tool first advances to an 80 mm pre-set position, then to a 90 mm depth, and finally retracts, all from a single actuator.
Staged Assembly Fixtures
Moves a component fixture through a four-position assembly cell: a load station (0 mm), a first process at 80 mm, a second process at 90 mm, and an unload station at the full 170 mm extension.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X90S the Right Cylinder?
Select the SCT100X80X90S when your process requires a compact, single-rod solution to achieve four fixed mechanical stops without the complexity of two separate cylinders and external hard stops. If a lower force is acceptable, the 80 mm bore SCT80 series provides 2513 N of push per section at 0.5 MPa, which may reduce air consumption. For a direct replacement, match the 100 mm bore, both strokes (80 mm and 90 mm), PT port thread, and the built-in magnet option. Since the combined travel is 170 mm, standard rod guiding is sufficient for axial loads, but external guides are recommended for high side-load applications.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 90 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 SCT100X80X90S FAQ
This tandem cylinder provides four discrete mechanical stops. By pressurizing the sections individually or together, the rod can be positioned at 0 mm (retracted), 80 mm (section 1 extended), 90 mm (section 2 extended), or 170 mm (both sections extended). It is not a servo or infinitely variable positioner.
The SCT integrates two piston sections on a single common rod, guaranteeing coaxial alignment and a more compact footprint than two individual cylinders with a coupler. It simplifies the pneumatic circuit and mounting, but the force output per section remains identical to a standard SC100 cylinder (3927 N push at 0.5 MPa), not doubled. Replacement requires matching the bore, both strokes, and the magnet option.
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