Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 350mm and 350mm give 3 controllable stop positions across a 700mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1350 mm
- Stroke 2350 mm
- Total travel700 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S
The SCT40X350X350S is a tandem multi-position cylinder that provides three defined rod positions: fully retracted (0 mm), an intermediate stop at 350 mm, and full extension at 700 mm. Each piston section delivers 628 N of push force at 0.5 MPa, with a 16 mm diameter rod ensuring robust guidance across the combined 700 mm total travel.
Equipped with a built-in magnet, this model accepts CMSG, DMSG, or EMSG sensors directly on the tie-rod barrel for non-contact position confirmation at each stop. The 40 mm bore body has an A-length of 235 mm and uses PT1/4 ports, with an adjustable air cushion of 21 mm at each end cap to manage end-of-stroke deceleration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 350 / 350 mm |
| Total travel | 700 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) | 350 mm |
| P2 (both extended) | 700 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 SCT40X350X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×350 | 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S Is Used
3-Position Diverter Gate
Stops at 0, 350, and 700 mm allow a single actuator to route packages to three separate conveyor lanes, simplifying pneumatic logic and reducing component count.
Two-Stage Part Feeding
Precisely advances components to a pick point at 350 mm, then fully extends to 700 mm for a secondary presentation, with sensor feedback at each position via the integrated magnet.
Multi-Depth Pressing Station
Provides two distinct pressing depths in one cycle. The rod stops at 350 mm for a pre-form operation and continues to 700 mm for final compression, ensuring repeatable stroke accuracy.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S the Right Cylinder?
Selecting an SCT tandem cylinder is ideal when an application requires two fixed intermediate positions without the complexity of external hard stops or multiple actuators. For the SCT40, the per-section push force of 628 N at 0.5 MPa suits moderate transfer and sorting tasks. If higher thrust is needed, stepping up to the 50 mm bore provides 982 N per section, while a 32 mm bore offers a more compact 402 N alternative.
To replace this unit, match the 40 mm bore, both 350 mm strokes, the PT port thread, and the integrated magnet. With a stroke of 350 mm per section, ensure the rod is adequately guided if the load is off-centre, as side-load forces can cause premature seal wear and rod deflection on long-travel tandem assemblies.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 350 + 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X350X350S FAQ
This model provides 3 distinct mechanical stops because both stroke sections are equal at 350 mm. The rod positions are 0 mm (fully retracted), 350 mm (first section extended), and 700 mm (both sections extended for total travel).
No, like all standard pneumatic cylinders, the SCT does not lock its position. If air pressure is exhausted or a directional valve centres, the piston can drift. To securely hold a load at the 350 mm stop without live pressure, you must add an external rod lock or a pilot-operated check valve.
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