Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X25S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 25mm give 4 controllable stop positions across a 150mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 1125 mm
- Stroke 225 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X25S
The SCT32X125X25S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions from its asymmetric stroke pairing: 0 mm (fully retracted), 25 mm, 125 mm, and the combined total travel of 150 mm. Each piston section provides a push force of 402 N at 0.5 MPa, making it a compact solution for light sorting or diverting tasks where a standard single-stroke cylinder cannot offer intermediate stops.
This model includes an integrated magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the 32 mm bore barrel for reliable end-of-stroke and intermediate position feedback. The 12 mm diameter rod and M10x1.25 rod thread are standard for this bore, and the unit features an adjustable air cushion with a 21 mm cushion length to manage deceleration at each stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X25S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 125 / 25 mm |
| Total travel | 150 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) | 125 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 150 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 SCT32X125X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT32X125X25S Is Used
Two-Way Part Diverting
Use the 25 mm stroke to nudge a part onto a bypass lane and the full 150 mm stroke to push it onto a reject conveyor, all from a single compact actuator.
Dual-Depth Light Pressing
Achieve a shallow 25 mm insertion depth for a locating pin and a deeper 125 mm or 150 mm stroke for a final press fit in an assembly fixture.
Multi-Step Clamping
Apply an initial low-contact-force clamp at the 125 mm position, then a secondary high-force clamp at the full 150 mm total travel for delicate workpiece handling.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X25S the Right Cylinder?
Select the SCT32X125X25S when a single actuator must reach two distinct extended positions without the complexity of two separate cylinders and a stopping plate. For applications needing higher force, stepping up to the 40 mm bore SCT provides roughly 628 N of push per section at the same pressure. This model is a direct replacement for any existing AirTAC SCT32X125X25S installation; match the bore, both strokes (125 mm and 25 mm), PT port thread, and the integrated magnet to ensure identical sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 25 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 SCT32X125X25S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (second section only), 125 mm (first section only), and 150 mm (both sections extended). The positions are fixed by the two internal piston strokes and are not infinitely adjustable.
No, the SCT32X125X25S does not have a mechanical locking or brake feature. If air pressure is exhausted or lost, the piston can drift from its position. If a load must be securely held at an intermediate stop without live pressure, you must add an external rod lock or a pilot-operated check valve.
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