Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 200mm give 4 controllable stop positions across a 280mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 2200 mm
- Total travel280 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S
The SCT40X80X200S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 80 mm, 200 mm, and the combined total travel of 280 mm. Each piston section generates a push force of 628 N at 0.5 MPa, driven through a 16 mm diameter rod, making it suitable for diverting or two-stage feeding tasks.
This specific model includes a built-in magnet, designated by the 'S' suffix, allowing direct mounting of CMSG, DMSG, or EMSG sensors for reliable end-of-stroke or mid-position detection. With a body length of 235 mm and a 21 mm adjustable air cushion, it provides smooth deceleration across all four stop points without the complexity of servo controls.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 200 mm |
| Total travel | 280 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 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) | 200 mm |
| P3 (both extended) | 280 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S Is Used
Two-Stage Part Diverting
The four distinct positions (0, 80, 200, 280 mm) are ideal for sorting items onto three separate conveyor lanes using a single actuator, simplifying the pneumatic circuit.
Multi-Depth Pressing
Achieve two different pressing depths in a single cycle. The 80 mm stroke can be used for a pre-press, and the 200 mm stroke for a final form, with the 280 mm position for part ejection.
Sequential Gate Control
Operate a gate with three open positions. The sensor-ready magnet allows the controller to confirm the gate is at the 80 mm, 200 mm, or fully open 280 mm position before proceeding.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S the Right Cylinder?
Selecting the SCT40X80X200S gives you four positive stops from one compact assembly, replacing the need for two separate cylinders and external hard stops. If your application requires more force per section, consider stepping up to the 50 mm bore SCT50X80X200, which provides 982 N of push at 0.5 MPa. For a direct replacement, match the 40 mm bore, both the 80 mm and 200 mm strokes, PT port thread, and the integrated magnet (-S). Given the 200 mm stroke on the second 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 80 + 200 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X200S FAQ
This tandem cylinder has four discrete mechanical stops: 0 mm (fully retracted), 80 mm (first section extended), 200 mm (second section extended), and 280 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it is designed for that purpose. It provides the same three extended positions as two hard-stopped cylinders in a much more compact footprint. A drop-in replacement must match the 40 mm bore, 80 mm and 200 mm strokes, PT ports, and the -S magnet option for sensor compatibility.
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