Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X30
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 30mm give 4 controllable stop positions across a 55mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 125 mm
- Stroke 230 mm
- Total travel55 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X30
The SCT32X25X30 is a tandem multi-position cylinder that delivers four distinct rod positions from two independent piston sections on a common rod line. By pressurising the 25 mm and 30 mm stroke sections individually or together, the rod stops precisely at 0 mm (fully retracted), 25 mm, 30 mm, and 55 mm total travel, making it ideal for diverting or sorting tasks that need a compact sequence of fixed stops.
Each 32 mm bore section generates 402 N of push force at 0.5 MPa (724 N at 0.9 MPa), while the 12 mm diameter rod and PT1/8 ports keep the unit compact. The body length A is 233 mm, and the cylinder uses a 21 mm air cushion on each section to decelerate the load quietly at end-of-stroke without external shock absorbers.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X30 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 25 / 30 mm |
| Total travel | 55 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) | 30 mm |
| P3 (both extended) | 55 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 SCT32X25X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×25 | 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 SCT32X25X30 Is Used
Small-Part Diverting Gate
The four discrete positions (0, 25, 30, 55 mm) let a single SCT32X25X30 direct lightweight components to three separate conveyor lanes or chutes, eliminating two extra single-stroke cylinders and simplifying the manifold.
Two-Depth Pressing or Staking
Use the 25 mm stroke for a shallow pre-form and the combined 55 mm stroke for a full-depth press. The 30 mm intermediate stop can also serve as a part-present check position before the final advance.
Multi-Stop Label or Tape Applicator
The rod-mounted applicator head can pause at 25 mm for a wipe-down, retract to 30 mm for a peel cycle, and extend to 55 mm for full application, all from one compact tandem cylinder with 402 N of push per section.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X25X30 the Right Cylinder?
Choose the SCT32X25X30 when your application requires a lightweight actuator with four discrete mechanical stops in a single tie-rod body—this replaces two separate 32 mm bore cylinders and the external hard stops or brackets needed to achieve the same 0–25–30–55 mm position set. If your load demands more thrust, step up to the 40 mm bore SCT40 which delivers 628 N push per section at 0.5 MPa. For direct replacement, match the 32 mm bore, both strokes (25 and 30 mm), PT port thread, and basic mounting; if the original unit carries a magnet suffix (-S) or a flange, those must also be matched exactly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 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 SCT32X25X30 FAQ
It provides four distinct mechanical stops: 0 mm (fully retracted), 25 mm (section 1 extended), 30 mm (section 2 extended), and 55 mm (both sections extended, total travel). The stops are fixed by the two stroke lengths and are selected by pressurising the appropriate cylinder section or both.
Yes, it is designed to replace a pair of separate 32 mm bore cylinders where you need four fixed rod positions. A direct replacement must match the 32 mm bore, both 25 mm and 30 mm strokes, PT port thread, and any original suffix options such as a magnet (-S) or mounting bracket (FA/FB/CA/CB/LB).
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