Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X75X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X75X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 50mm give 4 controllable stop positions across a 125mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 175 mm
- Stroke 250 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X75X50S
The SCT32X75X50S is a double-acting tandem cylinder that delivers four fixed rod positions from a single compact assembly: 0 mm (fully retracted), 75 mm, 50 mm, and 125 mm total travel. By pressurising the two 32 mm bore sections independently or together, you get precise, repeatable multi-stop motion without the complexity of servo systems. Each piston section provides 402 N of push force at 0.5 MPa, driven through a 12 mm diameter piston rod.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke or intermediate position sensing. The cylinder body has an A(SCT) length of 233 mm and features an adjustable air cushion of 21 mm on each section to decelerate the load smoothly. With PT1/8 ports and an M10x1.25 rod thread, it integrates easily into compact pneumatic circuits requiring sequenced, multi-depth movements.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X75X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X75X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 75 / 50 mm |
| Total travel | 125 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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) | 75 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 125 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X75X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT32X75X50S Is Used
Two-Stage Part Diverting
Actuate a diverter gate to three distinct positions—retracted, mid-stroke (50 mm), and full extension (125 mm)—to sort small components into separate chutes on a packaging line.
Multi-Depth Press-Fit Insertion
Install bushings or pins to two different controlled depths in a single cycle. The first section extends 75 mm for a partial press, and the second section adds 50 mm for final seating.
Sequential Part Staging
Use the four discrete stops to stage a workpiece at a pick point (0 mm), a vision inspection station (50 mm), a reject gate (75 mm), and a final placement location (125 mm).
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X75X50S the Right Cylinder?
Choose the SCT tandem cylinder when your application requires two or more fixed stopping points along a single linear axis, replacing the need for two separate cylinders and their mounting hardware. For this 32 mm bore, each section generates 402 N of push force at 0.5 MPa. If your load demands more thrust, stepping up to the 40 mm bore (SCT40) provides 628 N per section at the same pressure. For a direct replacement, match the 32 mm bore, both strokes of 75 mm and 50 mm, the PT port thread, and the built-in magnet (-S suffix).
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 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 SCT32X75X50S FAQ
This model provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), 50 mm (second section extended), and 125 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely variable.
No, the SCT is a standard double-acting cylinder and will not lock or hold position upon loss of air pressure. If a load must be safely held at one of the four stops without live pressure, you must add an external mechanical rod lock or a pilot-operated check valve to the circuit.
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