Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X175
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X175 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 175mm give 4 controllable stop positions across a 300mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1125 mm
- Stroke 2175 mm
- Total travel300 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X175
The SCT100X125X175 is a double-acting tandem cylinder with a 100 mm bore that provides four fixed rod positions: 0 mm (fully retracted), 125 mm, 175 mm, and the total travel of 300 mm. Each piston 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, driven through a robust 25 mm diameter rod.
With a body length A(SCT) of 308 mm and an effective cushion length of 29 mm, this tie-rod cylinder uses PT1/2 ports and an M20x1.5 rod thread. The standard TPU seals suit ambient temperatures from -20 to +70 °C, making it a reliable choice for multi-stop material handling where pneumatic sequencing replaces servo complexity.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X175 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X175 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 125 / 175 mm |
| Total travel | 300 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) | 125 mm |
| P2 (section 2) | 175 mm |
| P3 (both extended) | 300 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 SCT100X125X175
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT100X125X175 Is Used
Multi-Lane Diverting
Uses the four distinct stop positions to route packages or components into three separate conveyor lanes, controlled entirely by pneumatic valves.
Two-Depth Pressing
Provides a 125 mm pre-press position and a 175 mm full-depth stroke, allowing a single cylinder to handle two different assembly insertion depths.
Sequential Gate Control
Operates a material gate with a closed position, a 125 mm partial opening, a 175 mm mid-flow setting, and a full 300 mm open position for clearing jams.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X175 the Right Cylinder?
Select this four-position unit when a single actuator must stop at two intermediate points without the alignment hassle of two separate cylinders. The 125 mm and 175 mm strokes create a 300 mm total reach, ideal for diverting parts to distinct lanes. If higher force is required, this 100 mm bore is the largest in the SCT range; for a lighter, more compact alternative, the SCT80 bore provides 2513 N of push per section at 0.5 MPa.
Direct replacement requires matching the 100 mm bore, both the 125 mm and 175 mm section strokes, PT port thread, and the basic mounting configuration. With a 300 mm total extension, ensure the load is guided if side forces are present, as the rod supports the combined stroke length.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 175 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 SCT100X125X175 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 125 mm, 175 mm, and the combined total extension of 300 mm. These are fixed by the two internal piston sections and are not infinitely adjustable.
Yes, it is designed to replace two separate 100 mm bore cylinders with 125 mm and 175 mm strokes. It ensures perfect axial alignment of the stop positions and simplifies the pneumatic circuit, provided the port thread (PT1/2) and basic mounting match your existing setup.
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