Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X30S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X30S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 30mm give 4 controllable stop positions across a 110mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 230 mm
- Total travel110 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X30S
The SCT40X80X30S is a tandem multi-position cylinder that creates four fixed rod positions: fully retracted (0 mm), 30 mm, 80 mm, and the full combined travel of 110 mm. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where a single cylinder must hit two intermediate stops without external hard stops.
A built-in magnet on the piston allows direct mounting of CMSG, DMSG, or EMSG sensors to confirm each discrete position. The 16 mm diameter rod and PT1/4 ports handle standard shop air, while the 21 mm adjustable air cushion at each end section decelerates the load smoothly. The body length A is 235 mm plus the combined stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X30S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X30S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 30 mm |
| Total travel | 110 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) | 30 mm |
| P3 (both extended) | 110 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 SCT40X80X30S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT40X80X30S Is Used
Two-Way Diverter Gate
Stop at 30 mm to divert small packages to lane A, then extend to 110 mm to push the next item to lane B, all from one compact actuator with sensor feedback.
Multi-Depth Labeling
Apply a label at 80 mm extension on a flat surface, then retract slightly to 30 mm to press the label edge onto a curved profile without changing tooling.
Staged Part Ejection
Eject a finished part at 80 mm, then extend fully to 110 mm to clear a taller downstream fixture, using the magnet sensors to sequence the next machine cycle.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X30S the Right Cylinder?
Choose the SCT when your sequence requires two distinct forward positions from one actuator, eliminating the complexity and plumbing of two separate cylinders with external stoppers. For this 40 mm bore, the per-section push force at 0.5 MPa is 628 N; if you need more thrust, stepping up to the 50 mm bore provides 982 N per section. Ensure the load is guided if the combined 110 mm travel creates a moment on the rod.
To replace this exact unit, match the 40 mm bore, the 80 mm and 30 mm section strokes, the PT port thread, and the built-in magnet (-S suffix). This basic configuration ships without mounting brackets, so you can reuse your existing FA, FB, CA, CB, or LB hardware from the SCT accessory set.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 30 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 SCT40X80X30S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 30 mm (first section extended), 80 mm (second section extended), and 110 mm (both sections extended). The built-in magnet allows you to mount sensors to verify each position.
Yes, in applications needing two fixed forward positions. The SCT40X80X30S combines two strokes on one common rod, saving space and reducing mounting hardware. Ensure the replacement matches the 40 mm bore, both 80 mm and 30 mm strokes, the PT thread, and the -S magnet option.
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