Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 150mm give 4 controllable stop positions across a 175mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 2150 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150
The SCT63X25X150 is a double-acting multi-position cylinder that provides four fixed rod positions: 0 mm (fully retracted), 25 mm, 150 mm, and the combined total travel of 175 mm. Each piston section generates a push force of 1559 N at 0.5 MPa, making it suitable for applications needing two distinct extended stops without complex servo controls.
Built on a robust tie-rod design with a 20 mm rod and M16x1.5 thread, this 63 mm bore cylinder uses PT1/4 ports and features a 28 mm adjustable air cushion at each end. The body length A is 249 mm, and the standard TPU seals support an operating temperature range of -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 150 mm |
| Total travel | 175 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, 28 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) | 150 mm |
| P3 (both extended) | 175 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X25X150
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×150 | 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 SCT63X25X150 Is Used
Two-Stage Sorting Gate
Uses the 25 mm stop for a partial gate opening to divert small items and the 150 mm stop for a full-open position to pass larger packages on a conveyor line.
Dual-Depth Pressing
Provides a light touch at the 25 mm position for component alignment and a full 175 mm stroke for the final press-fit insertion in assembly fixtures.
Multi-Stop Labeling
Positions a labeling head at two different heights (150 mm and 175 mm) to apply labels to products of varying thicknesses on the same line.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150 the Right Cylinder?
This 4-position model is ideal when a process requires a short precision stop and a longer feed stroke from a single compact unit, eliminating the need for two separate cylinders with external hard stops. For higher thrust, stepping up to the 80 mm bore SCT80X25X150 provides 2513 N of push per section at 0.5 MPa. A direct replacement must match the 63 mm bore, both 25 mm and 150 mm strokes, PT thread, and basic mounting. For strokes exceeding 300 mm total, consider external guides to manage side-loading on the tie-rod assembly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 150 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 SCT63X25X150 FAQ
This tandem cylinder reaches four discrete mechanical stops: 0 mm (home), 25 mm (section one extended), 150 mm (section two extended), and 175 mm (both sections extended). It does not offer infinitely variable positioning.
No, it is not a locking cylinder. The piston will drift if air pressure is lost or the valve center is exhausted. To securely hold a load at an intermediate stop, 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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