Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X50
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X50 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 50mm give 4 controllable stop positions across a 75mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 125 mm
- Stroke 250 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X50
The SCT32X25X50 is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 25 mm, 50 mm, and the total travel of 75 mm. By pressurising either of its two piston sections independently or both together, you get repeatable mechanical stops without external hardware. Each section produces 402 N of push force at 0.5 MPa, rising to 724 N at the 0.9 MPa maximum operating pressure.
Built on a tie-rod body with a 12 mm diameter piston rod and M10x1.25 rod thread, this 32 mm bore unit has a body length A(SCT) of 233 mm. The PT1/8 ports and adjustable pneumatic cushioning (21 mm cushion length) help manage end-of-stroke impact. It operates on standard 40 µm filtered air from 0.15 to 1.0 MPa across a -20 to +70 °C range with its default TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X50 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X50 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 25 / 50 mm |
| Total travel | 75 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) | 25 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 75 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 SCT32X25X50
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×25 | 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 SCT32X25X50 Is Used
Two-Way Diverter Gate
Actuates a diverter gate to three distinct positions—retracted, mid-stroke (25 mm), and extended (75 mm)—for routing packages on a conveyor line.
Multi-Stop Label Applicator
Positions a tamp pad at 0 mm, 25 mm, or 50 mm extension to apply labels to products of varying heights on a single production line.
Two-Depth Pressing Station
Provides a shallow press depth (25 mm) and a full-depth press (75 mm) in a light assembly fixture, using the 50 mm intermediate stop for part ejection.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X50 the Right Cylinder?
Choose the SCT32X25X50 when your application needs four distinct mechanical stop points in a compact, single-rod package, avoiding the complexity and plumbing of two separate cylinders with external stops. If you require higher thrust at each position, consider stepping up to the 40 mm bore SCT40 series, where a single section delivers 628 N of push at 0.5 MPa. For a drop-in replacement, match the 32 mm bore, both strokes (25 mm and 50 mm), PT port thread, and basic mounting style exactly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 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 SCT32X25X50 FAQ
This tandem cylinder provides four discrete mechanical stop positions: 0 mm (fully retracted), 25 mm (first section extended), 50 mm (second section extended), and 75 mm (both sections extended for total travel).
No. Like all standard pneumatic cylinders, the SCT32X25X50 will drift or drop if air pressure is lost or a directional valve is centered. To hold a load at any position without live pressure, you must add an external mechanical rod lock or a pilot-operated check valve.
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