Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X200
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X200 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 350mm and 200mm give 4 controllable stop positions across a 550mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1350 mm
- Stroke 2200 mm
- Total travel550 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X200
The SCT63X350X200 is a double-acting tandem cylinder that delivers four fixed rod positions from a single body: fully retracted (0 mm), 200 mm, 350 mm, and the total travel of 550 mm. Each piston section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa, driven through a 20 mm diameter rod.
With a 28 mm adjustable air cushion at each end and a body length of 249 mm, this tie-rod cylinder is built for multi-stop tasks that require repeatable positioning without complex controls. The PT1/4 ports and M16x1.5 rod thread make it a direct fit for standard pneumatic circuits, while the TPU seals ensure reliable operation from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X200 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X200 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 350 / 200 mm |
| Total travel | 550 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) | 350 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 550 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 SCT63X350X200
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×350 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT63X350X200 Is Used
Two-Stage Diverter Gate
Use the four positions to route packages to three separate conveyor lanes. Retract for lane 1, extend to 200 mm for lane 2, 350 mm for lane 3, and full 550 mm stroke for a reject chute.
Sequential Clamping Fixture
Clamp a workpiece at 200 mm for a drilling operation, then advance to 350 mm to present it to a tapping head without releasing the part. The fixed stroke relationship ensures precise alignment between stations.
Multi-Depth Pressing
Achieve two different press depths in one cycle. The 200 mm stroke sets a pre-compression position, while the 350 mm stroke delivers the final forming depth, with the 550 mm total travel used for part ejection.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X200 the Right Cylinder?
Choose the SCT63X350X200 when your process needs four distinct mechanical stops without the cost and complexity of servo positioning. It outperforms two separate cylinders by guaranteeing the spatial relationship between stops is fixed by the rod assembly, eliminating drift between independently mounted actuators. If your force requirement is lower, the 50 mm bore SCT provides 982 N of push per section at 0.5 MPa; for heavier loads, the 80 mm bore delivers 2513 N.
For replacement, match the 63 mm bore, both the 350 mm and 200 mm strokes, PT port thread, and basic mounting. Since the 350 mm section stroke is long, ensure the load is guided externally to prevent rod bending or uneven seal wear from side loads. A genuine AirTAC SCT unit is essential to maintain the exact stop positions and cushion performance of the original design.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 350 + 200 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 SCT63X350X200 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 200 mm (section 2 extended), 350 mm (section 1 extended), and 550 mm (both sections extended). It does not offer infinitely variable positioning.
Yes, if your application requires the rod to move to fixed 200 mm and 350 mm positions. The SCT integrates both strokes on a single common rod, which eliminates the alignment drift that can occur between two independently mounted cylinders. Ensure the porting and mounting match your existing setup.
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