Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 50mm give 3 controllable stop positions across a 100mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 250 mm
- Total travel100 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X50S
The SCT40X50X50S is a 40 mm bore multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke (50 mm), and full extension (100 mm). Each piston section provides 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa, making it a compact solution for two-stop indexing tasks.
A built-in magnet (-S suffix) is integrated into the 16 mm diameter piston rod, allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. The cylinder body has an A-length of 235 mm, uses PT1/4 ports, and features an adjustable air cushion of 21 mm on each section to decelerate the load quietly.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 50 mm |
| Total travel | 100 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) | 50 mm |
| P2 (both extended) | 100 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 SCT40X50X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT40X50X50S Is Used
Two-Way Diverter Gate
Positions the gate at 0 mm (lane A), 50 mm (neutral), or 100 mm (lane B) for reliable product sorting on a packaging conveyor.
Dual-Depth Pressing
Provides a partial insertion stop at 50 mm and a full-depth stop at 100 mm for assembling components with two different insertion depths.
Three-Stop Pallet Indexer
Advances a pallet to a loading station (50 mm) and then to a discharge station (100 mm) before retracting, using sensors on the barrel for position verification.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X50S the Right Cylinder?
Select the SCT40X50X50S when your application needs a compact actuator to shift a load between three distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 40 mm bore is well-suited for moderate force tasks; if higher thrust is needed, stepping up to the 50 mm bore provides 982 N of push per section at 0.5 MPa. For replacement, match the 40 mm bore, both 50 mm strokes, the PT port thread, and the -S magnet option to retain sensor feedback. If the load must be held at the 50 mm or 100 mm position with air pressure removed, an external rod lock or pilot-operated check valve is required, as the air cushion does not provide position holding.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 50 + 50 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 SCT40X50X50S FAQ
It provides 3 distinct rod positions because both piston sections have an equal 50 mm stroke. The positions are 0 mm (fully retracted), 50 mm (first section extended), and 100 mm (both sections extended, total travel).
Yes, it can replace two independently mounted 40 mm bore cylinders with 50 mm strokes, provided the port thread (PT1/4), the need for a built-in magnet (-S), and the basic mounting style match. It simplifies the pneumatic circuit by using one body to achieve the same three-position sequence.
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