Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X350
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X350 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 350mm give 4 controllable stop positions across a 375mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 2350 mm
- Total travel375 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X350
The SCT63X25X350 tandem cylinder delivers four fixed rod positions—0 mm, 25 mm, 350 mm, and 375 mm total travel—from a single compact assembly. Each piston section generates 1559 N of push force at 0.5 MPa (2805 N at 0.9 MPa), driven through a 20 mm diameter rod with PT1/4 ports.
With a 28 mm adjustable air cushion and a 249 mm body length A(SCT), this double-acting unit handles multi-stop tasks without the complexity of two separate cylinders and external stops. The standard TPU seals suit operating temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X350 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X350 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 350 mm |
| Total travel | 375 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) | 350 mm |
| P3 (both extended) | 375 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 SCT63X25X350
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×350 | 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 SCT63X25X350 Is Used
Two-Depth Pressing
Use the 25 mm stop for a light pre-press or part location, then extend to the full 375 mm for a deep forming or insertion operation, all from one cylinder.
Multi-Stop Part Transfer
Actuate to 25 mm for a pick position, 350 mm for a place position, and 375 mm for a reject or secondary drop-off, simplifying linear transfer stations.
Staged Assembly Fixtures
Bring a tool to a 25 mm standby position, advance to 350 mm for a fastening operation, and retract fully, eliminating the need for dual-cylinder sequencing.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X350 the Right Cylinder?
This four-position model is ideal when a process needs a short 25 mm advance for part contact or clamping, followed by a longer 350 mm stroke for transfer or ejection. If the 25 mm section force is insufficient, stepping up to an 80 mm bore provides 2513 N push at 0.5 MPa per section. For a drop-in replacement, match the 63 mm bore, both the 25 mm and 350 mm strokes, PT port thread, and basic mounting.
The 350 mm section stroke is substantial; consider an external guide or rod support if the application imposes significant side loads, as the tie-rod construction relies on the rod bearing for alignment.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 350 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 SCT63X25X350 FAQ
It provides four distinct rod positions: fully retracted (0 mm), first section extended (25 mm), second section extended (350 mm), and both sections extended (375 mm total travel). The positions are selected by pressurizing the two piston sections independently or together.
Yes, in applications requiring two fixed stroke lengths from a single mounting point. It replaces a 25 mm stroke and a 350 mm stroke cylinder, reducing plumbing and mounting hardware. Ensure the replacement matches the 63 mm bore, PT1/4 ports, and basic mounting configuration.
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