Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X75X75
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X75X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 75mm give 3 controllable stop positions across a 150mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 175 mm
- Stroke 275 mm
- Total travel150 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X75X75
The AirTAC SCT100X75X75 is a tie-rod multi-position cylinder that provides three fixed rod positions: fully retracted (0 mm), 75 mm, and full extension at 150 mm. Each of its two tandem piston sections generates a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, driven through a rigid 25 mm diameter rod.
With a body length A of 308 mm and a 29 mm adjustable air cushion at each end, this double-acting unit decelerates high-inertia loads smoothly without external shock absorbers. It is suited for sorting gates or two-depth pressing stations where a mid-stroke stop must be mechanically fixed and highly repeatable.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X75X75 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X75X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 75 / 75 mm |
| Total travel | 150 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 75 mm |
| P2 (both extended) | 150 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 SCT100X75X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT100X75X75 Is Used
3-Position Diverter Gate
Uses the 0, 75, and 150 mm stops to direct product flow to three separate conveyor lanes from a single infeed point, simplifying line routing.
Two-Depth Insertion Press
Provides a precise 75 mm partial-insertion stop and a 150 mm full-seating stroke, ensuring consistent depth control for two-stage assembly processes.
Multi-Level Pallet Stop
Acts as a heavy-duty pallet escapement, stopping a pallet at a 75 mm raised position for scanning and then fully extending to 150 mm for release.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X75X75 the Right Cylinder?
Choose the SCT100X75X75 when a single cylinder must provide three hard stops, eliminating the complexity of two separate actuators and external stoppers. If the per-section force is more than needed, stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa, while still offering the same 75 mm section strokes.
For a drop-in replacement, match the 100 mm bore, both 75 mm strokes, PT port thread, and basic mounting. If the application involves a long tooling offset from the rod end, consider an external guide to protect the 25 mm rod and front bushing from side loads.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 75 + 75 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 SCT100X75X75 FAQ
It has three distinct mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), and 150 mm (both sections extended). The stops are fixed by the cylinder's internal structure, not by external sensors.
Each of the two piston sections produces 3927 N of push force at 0.5 MPa. The multi-position function does not add the force of the two sections together; the driving force for any move is the 3927 N from the active section.
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