Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X350S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 350mm give 4 controllable stop positions across a 430mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 2350 mm
- Total travel430 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X350S
The SCT80X80X350S is a double-acting, multi-position tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 80 mm, 350 mm, and the total combined travel of 430 mm. Each piston section generates 2513 N of push force at 0.5 MPa, providing robust, repeatable stopping points for sequencing tasks without complex servo controls.
This model features a built-in magnet (-S suffix) along the 80 mm bore barrel, allowing direct clamping of CMSG, DMSG, or EMSG reed and solid-state sensors to confirm each discrete position. The 25 mm diameter rod, PT 3/8 ports, and 28 mm adjustable air cushion at each end ensure reliable cycling and end-of-stroke deceleration across its 30-800 mm/s speed range.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X350S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 350 mm |
| Total travel | 430 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) | 80 mm |
| P2 (section 2) | 350 mm |
| P3 (both extended) | 430 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 SCT80X80X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×350 | 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 SCT80X80X350S Is Used
Two-Stage Part Diverting
Uses the 80 mm and 350 mm positions to direct parts to two separate conveyor lanes from a single infeed point, with sensors confirming arrival at each divert gate location.
Multi-Depth Pressing
Provides two distinct pressing depths (80 mm and 430 mm total travel) in a single compact unit, ideal for assembly stations requiring a pre-set and a final insertion stroke.
Sequential Clamping
Executes a two-step clamp sequence: a rapid 80 mm approach stroke to contact the part, followed by a controlled 350 mm high-force clamping stroke, all from one valve manifold.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X350S the Right Cylinder?
Choose the SCT when your application needs up to four fixed, repeatable stop positions from a single pneumatic circuit, eliminating the cost and complexity of two separate cylinders and external hard stops. The 80 mm bore provides a per-section push force of 2513 N at 0.5 MPa; if a higher force is needed, stepping up to the 100 mm bore (3927 N push at 0.5 MPa) is a direct path, while the 63 mm bore (1559 N push) suits lighter, more compact designs.
For a drop-in replacement, match the 80 mm bore, both the 80 mm and 350 mm section strokes, PT port thread, basic mounting, and the -S magnet option. The 350 mm stroke on the second section introduces a longer cantilever at full extension; ensure the load is guided or supported externally to prevent rod bending and side-load wear on the bearing.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 350 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 SCT80X80X350S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 80 mm (first section extended), 350 mm (second section extended), and 430 mm (both sections extended). You select the position by pressurizing the appropriate piston section.
Yes, it is designed to do exactly that. It provides two fixed intermediate stops in a single, compact tie-rod body. A direct replacement requires an SCT80X80X350S with a PT port, basic mounting, and the -S magnet to match the original sensor setup.
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