Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X80S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 80mm give 3 controllable stop positions across a 160mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 280 mm
- Total travel160 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X80S
The SCT40X80X80S is a double-acting multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke (80 mm), and full extension (160 mm). By pressurising one or both of its two 80 mm stroke sections, you can reliably index between these discrete stops without external hard stops or complex servo controls. Each piston section provides a push force of 628 N at 0.5 MPa, giving predictable thrust for light sorting and diverting tasks.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position confirmation at each stop. The 40 mm bore features a 16 mm diameter piston rod and M12x1.25 rod thread, with a total body length of 235 mm plus strokes. Adjustable pneumatic cushioning at both ends of each section decelerates the load smoothly, and the standard PT1/4 ports ensure straightforward plumbing in compact pneumatic panels.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X80S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 80 mm |
| Total travel | 160 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 80 mm |
| P2 (both extended) | 160 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 SCT40X80X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT40X80X80S Is Used
Two-Lane Diverter Gate
Uses the three positions (0, 80, 160 mm) to guide packages into left, centre, or right conveyor lanes, replacing two single-rod cylinders and simplifying the valve and sensor setup.
Multi-Stop Part Staging
Stops a pallet or workpiece carrier at a retracted home, a mid-point inspection station, and a final advanced pick location, with sensor feedback from the built-in magnet confirming arrival at each stage.
Two-Depth Pressing or Staking
Provides a consistent partial-advance position for a light pre-forming operation at 80 mm and a full-depth final press at 160 mm, using the cylinder's fixed mechanical stops for repeatable depth control.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X80S the Right Cylinder?
Choose the SCT when your application needs two or three distinct mechanical stop positions from a single compact unit, rather than linking two separate cylinders. The SCT40X80X80S is ideal where the 628 N push force per section at 0.5 MPa is sufficient; if you require higher thrust, consider stepping up to the 50 mm bore SCT50 series, which delivers 982 N per section at the same pressure. This cylinder is a direct form-and-function replacement for another AirTAC SCT40X80X80S with a magnet, matching the 40 mm bore, both 80 mm strokes, PT ports, and basic mounting. For stroke lengths of 80 mm, rod buckling is rarely a concern, but always ensure the load is guided if side forces are present.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 80 + 80 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 SCT40X80X80S FAQ
It provides three distinct mechanical stop positions because both stroke sections are equal at 80 mm. The rod positions are 0 mm (fully retracted), 80 mm (one section extended), and 160 mm (both sections extended for total travel).
Yes, if your sequence requires the rod to stop at 0, 80, and 160 mm. The SCT combines two piston sections on a single common rod, so it takes up less space than two individual cylinders and requires only one mounting bracket set, though it does not multiply the force—each section still provides 628 N push at 0.5 MPa.
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