Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X125S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X125S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 125mm give 3 controllable stop positions across a 250mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 1125 mm
- Stroke 2125 mm
- Total travel250 mm
- Positions3 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X125S
The SCT32X125X125S tandem cylinder delivers three fixed rod positions—0 mm, 125 mm, and 250 mm total travel—by pressurising its two piston sections. Each section generates 402 N of push force at 0.5 MPa, driven through a 12 mm diameter rod, making it a compact solution for light-duty sorting or diverting tasks.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for end-of-stroke or intermediate position confirmation. The cylinder body measures 233 mm in length and uses PT1/8 ports with an M10x1.25 rod thread, offering a standard 21 mm adjustable air cushion for smooth deceleration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X125S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X125S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 125 / 125 mm |
| Total travel | 250 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 125 mm |
| P2 (both extended) | 250 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 SCT32X125X125S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×125 | 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 SCT32X125X125S Is Used
Two-Way Diverter Gate
The three positions (0, 125, 250 mm) allow a single actuator to route packages to two separate conveyor lanes, eliminating the need for two individual cylinders.
Staged Part Ejection
Retract to 0 mm for standby, extend to 125 mm to eject a good part, and fully extend to 250 mm to push a rejected part into a separate bin.
Two-Depth Pressing
Achieve a shallow 125 mm press depth and a full 250 mm depth in sequence, controlled by switching pressure between the two cylinder sections.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X125S the Right Cylinder?
Choose the SCT when your application needs two or three discrete mechanical stops without the complexity of servo control. For higher thrust, stepping up to the 40 mm bore provides 628 N of push per section at the same 0.5 MPa. As a direct replacement, ensure the new unit matches the 32 mm bore, both 125 mm section strokes, PT port thread, basic mounting, and the -S magnet option.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 125 + 125 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 SCT32X125X125S FAQ
It provides 3 distinct mechanical stop positions because both strokes are equal. The rod positions are fully retracted (0 mm), extended to the first stroke (125 mm), and fully extended to the sum of both strokes (250 mm).
Yes, in many cases. It combines the function of two cylinders into one compact body, providing three discrete positions from a single rod line. Ensure the mounting style, port thread, and magnet option match your existing setup.
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