Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X25S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 25mm give 3 controllable stop positions across a 50mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 225 mm
- Total travel50 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X25S
The SCT63X25X25S is a double-acting multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), extended to the first 25 mm stroke, and fully extended to the combined 50 mm total travel. Each of its two 63 mm bore sections generates a push force of 1559 N at 0.5 MPa, offering robust power for short-throw, multi-stop tasks.
This model includes a built-in magnet (-S suffix), allowing direct clamping of CMSG, DMSG, or EMSG sensors onto the tie-rod barrel for non-contact position feedback. The 20 mm diameter piston rod and 28 mm air cushion length contribute to its reliable, repeatable stopping at each discrete position.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X25S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 25 mm |
| Total travel | 50 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 25 mm |
| P2 (both extended) | 50 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 SCT63X25X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | 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 SCT63X25X25S Is Used
Two-Way Diverter Gate
Uses the 0 mm and 25 mm positions to direct parts down one of two chutes, with the 50 mm position providing a third bypass path for reject or recirculation.
Multi-Depth Press Insertion
Installs components to a partial depth at the 25 mm stop, then completes the full insertion at the 50 mm total travel, all with a single compact cylinder.
Three-Position Label Applicator
Positions a tamp pad at a safe retracted home (0 mm), a pre-dispense pick-up point (25 mm), and a final application height (50 mm) for precise, repeatable labeling.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X25S the Right Cylinder?
Select this SCT when a single actuator must provide two distinct extended stop points without the complexity of two separate cylinders and external hard stops. The 25 mm per section stroke is ideal for compact sorting gates or two-depth pressing where travel is short. If higher force is needed, stepping up to the 80 mm bore provides 2513 N of push per section at the same 0.5 MPa pressure.
For a direct replacement, match the 63 mm bore, both 25 mm strokes, the PT port thread, and the built-in magnet (-S). This is a basic mounting model, so ensure your fixture matches the standard tie-rod end caps.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 25 + 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 SCT63X25X25S FAQ
It provides three distinct mechanical stop positions: 0 mm (fully retracted), 25 mm (first section extended), and 50 mm (both sections extended for total travel). The stops are fixed by the two 25 mm strokes and are not infinitely adjustable.
Yes, it is designed to do exactly that in a more compact, single-body package. It provides the same two 25 mm strokes on one common rod line. Ensure the replacement matches the 63 mm bore, PT ports, and the -S magnet option for sensor compatibility.
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