Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X350X125
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X350X125 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 350mm and 125mm give 4 controllable stop positions across a 475mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1350 mm
- Stroke 2125 mm
- Total travel475 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X350X125
The SCT80X350X125 is a tandem multi-position cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 125 mm, 350 mm, and the total travel of 475 mm. Each 80 mm bore section generates 2513 N of push force at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for material handling tasks requiring three distinct extended stops.
Built on a robust tie-rod design with a 25 mm diameter rod and PT3/8 ports, this cylinder features a 28 mm adjustable air cushion in each section for smooth deceleration. The body length A(SCT) is 296 mm, providing a compact footprint for its 475 mm total stroke capability in sorting or diverting applications.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X350X125 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X350X125 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 350 / 125 mm |
| Total travel | 475 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| 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, 28 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) | 125 mm |
| P3 (both extended) | 475 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SCT80X350X125
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×350 | Stroke 1 (section 1) in mm. |
| ×125 | 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 SCT80X350X125 Is Used
Four-Way Diverter Gate
Uses the four discrete stops to route packages to four separate conveyor lanes from a single infeed point, controlled by pressurizing each piston section independently or together.
Multi-Depth Clamping
Applies two different clamping depths (125 mm and 350 mm) on a mixed-product assembly line, plus a full-open position at 475 mm for part changeover.
Staged Pusher Arm
Operates a pusher that advances to a pre-stop at 125 mm, a main stop at 350 mm, and a final eject position at 475 mm, all from one compact cylinder body.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X350X125 the Right Cylinder?
Select the SCT80X350X125 when your process needs a single actuator to reach four separate positions, eliminating the complexity and air consumption of two individual cylinders with external stops. The 125 mm and 350 mm strokes are fixed, creating a repeatable sequence without electronic programming. If your load requires slightly less force, stepping down to the 63 mm bore provides 1559 N of push per section at 0.5 MPa. For a direct replacement, match an AirTAC SCT with an 80 mm bore, 350 mm and 125 mm strokes, PT thread, and basic mounting. With a 350 mm stroke on the first section, ensure the rod is adequately guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 350 + 125 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 SCT80X350X125 FAQ
This tandem cylinder provides four distinct rod positions: 0 mm (retracted), 125 mm, 350 mm, and the combined total of 475 mm. The positions are selected by pressurizing the first section, the second section, or both simultaneously.
Yes, it can replace a setup with two individual cylinders and external hard stops to achieve three extended positions, provided the strokes match 125 mm and 350 mm. The replacement must be an AirTAC SCT with an 80 mm bore, both strokes, and matching PT ports to ensure identical mounting and performance.
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