Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X250S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 150mm and 250mm give 4 controllable stop positions across a 400mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1150 mm
- Stroke 2250 mm
- Total travel400 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X250S
The SCT40X150X250S tandem cylinder delivers four discrete rod positions: 0 mm, 150 mm, 250 mm, and the full 400 mm extension. Each of its two piston sections generates 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa), making it suitable for multi-stop feeding or diverting tasks.
A built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors along the 235 mm tie-rod body for position feedback. The 16 mm diameter rod and PT1/4 ports handle standard pneumatic connections, while the 21 mm air cushion at each end ensures smooth deceleration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X250S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 150 / 250 mm |
| Total travel | 400 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) | 150 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 400 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 SCT40X150X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×150 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT40X150X250S Is Used
Two-Stage Sorting Gate
Diverts packages to three different lanes using the 150 mm and 250 mm intermediate stops, with the full 400 mm stroke clearing the main path.
Multi-Depth Pressing
Applies pressure at two distinct depths in a laminating or assembly press, using the discrete 150 mm and 250 mm rod positions before full advance.
Staggered Part Feeding
Advances components to two separate pick points on a conveyor, stopping precisely at 150 mm and 250 mm for robotic or manual retrieval.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X250S the Right Cylinder?
Select this 4-position cylinder when an application requires two distinct intermediate stops without the complexity of two separate actuators. If higher thrust is needed, consider stepping up to the 50 mm bore SCT, which provides 982 N of push per section at the same pressure. For replacement, match the 40 mm bore, both the 150 mm and 250 mm strokes, the PT port thread, and the integrated magnet; the basic mount suits direct tie-rod installation.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 150 + 250 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 SCT40X150X250S FAQ
It provides four distinct mechanical stops: fully retracted (0 mm), 150 mm, 250 mm, and the total travel of 400 mm. These are fixed by the two piston sections and are not infinitely adjustable.
No, like any standard pneumatic cylinder, the SCT will drift or drop if pressure is exhausted from a section. To hold a load at the 150 mm or 250 mm stop without live pressure, an external rod lock or pilot-operated check valve is required.
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