Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X30
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 30mm give 4 controllable stop positions across a 105mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 175 mm
- Stroke 230 mm
- Total travel105 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X30
The SCT50X75X30 is a 50 mm bore tandem cylinder that produces four fixed rod positions—0 mm, 30 mm, 75 mm, and the full combined travel of 105 mm—by pressurising its two piston sections independently or together. Each section delivers 982 N of push force at 0.5 MPa (1767 N at 0.9 MPa), making it a compact alternative to mounting two separate cylinders for two-stop or three-stop linear moves.
Built on a durable tie-rod construction with a 20 mm diameter piston rod and M16x1.5 rod-end threads, this model includes a 21 mm adjustable air cushion on each section for smooth end-of-stroke deceleration. The body length A(SCT) is 243 mm, and the standard PT1/4 ports keep plumbing straightforward for factory air prep systems.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X30 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 75 / 30 mm |
| Total travel | 105 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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) | 30 mm |
| P3 (both extended) | 105 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X75X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT50X75X30 Is Used
Two-Stage Part Diverting
Use the 30 mm stroke to shift a diverter gate to a bypass lane and the 75 mm stroke to move it to a reject chute, giving three distinct flow paths from one compact actuator.
Sequential Clamping
Apply an initial low-force clamp at the 30 mm position to align a workpiece, then extend to 75 mm for full holding pressure before a machining cycle starts.
Dual-Depth Pressing
Achieve a shallow 30 mm pre-form stroke and a deeper 75 mm final-form stroke in a light assembly press, eliminating the need for a servo-driven axis.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X30 the Right Cylinder?
Choose the SCT50X75X30 when your application needs two independent intermediate stops plus full retraction and extension without the alignment hassle of two separate actuators. If your force requirement is lower, stepping down to the 40 mm bore reduces per-section push to 628 N at 0.5 MPa; for heavier tooling, the 63 mm bore provides 1559 N. This model is a direct replacement only for another AirTAC SCT with a 50 mm bore, 75 mm and 30 mm section strokes, PT ports, and basic mounting—matching both stroke values is essential for the position set to be identical.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 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 SCT50X75X30 FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 30 mm (section 2 extended), 75 mm (section 1 extended), and 105 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
No, this cylinder does not have a mechanical lock. If air pressure is lost or the valve centres, the piston can drift. To hold a load at an intermediate stop without live pressure, you must add an external rod brake or a pilot-operated check valve in the circuit.
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Standard models usually ship in 3-4 days.
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