Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X320X160S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X320X160S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 320mm and 160mm give 4 controllable stop positions across a 480mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1320 mm
- Stroke 2160 mm
- Total travel480 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X320X160S
The SCT80X320X160S is a double-acting tandem cylinder that provides four distinct rod positions: fully retracted (0 mm), 160 mm, 320 mm, and the total extended travel of 480 mm. Each piston section delivers a push force of 2513 N at 0.5 MPa, scaling up to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for multi-stop material handling tasks that require substantial force.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback at each stop. The 80 mm bore cylinder uses a 25 mm diameter rod, PT3/8 ports, and features an adjustable air cushion length of 28 mm to manage end-of-stroke impact. The body length A(SCT) is 296 mm plus the combined stroke length.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X320X160S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X320X160S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 320 / 160 mm |
| Total travel | 480 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) | 320 mm |
| P2 (section 2) | 160 mm |
| P3 (both extended) | 480 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 SCT80X320X160S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×320 | Stroke 1 (section 1) in mm. |
| ×160 | 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 SCT80X320X160S Is Used
Two-Stage Diverter Gate
Operates a conveyor diverter with three positions: home (0 mm), divert to lane A (160 mm), and divert to lane B (320 mm). The 480 mm position can be used for a maintenance bypass.
Multi-Depth Pressing
Provides three pressing depths in a single compact unit. The first advance stops at 160 mm for a pre-forming operation, the second at 320 mm for main pressing, and full extension at 480 mm for part ejection.
Sequential Part Feeding
Controls a multi-stage pusher that advances parts in three distinct steps. The 160 mm stroke indexes a part to a first station, 320 mm to a second, and the combined 480 mm stroke clears the line.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X320X160S the Right Cylinder?
Selecting an SCT tandem cylinder is ideal when an application requires two or more fixed, repeatable stopping points without the complexity of servo systems or multiple individual cylinders and external hard stops. This 80 mm bore model suits medium-to-heavy force requirements; if the load is lighter, stepping down to a 63 mm bore SCT reduces the per-section push force to 1559 N at 0.5 MPa. For a direct replacement, match the 80 mm bore, both strokes of 320 mm and 160 mm, PT port thread, basic mounting, and the -S magnet option.
With the first stroke section at 320 mm, consider the extended moment arm when the rod is fully extended to 480 mm. For applications with significant side loading or where the rod is guided externally, ensure proper alignment and support to prevent rod bending or premature bearing wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 320 + 160 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 SCT80X320X160S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 160 mm (second section extended), 320 mm (first section extended), and 480 mm (both sections extended, total travel).
The force is generated per actuated piston section, not combined. Each 80 mm bore section provides a push force of 2513 N at 0.5 MPa and a pull force of 2268 N. Actuating both sections simultaneously does not double the force; it simply moves the rod to the full 480 mm position.
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