Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X175X270
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X175X270 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 175mm and 270mm give 4 controllable stop positions across a 445mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1175 mm
- Stroke 2270 mm
- Total travel445 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X175X270
The SCT63X175X270 is a tandem double-acting pneumatic cylinder that delivers four fixed rod positions from a single compact assembly. By pressurising its two piston sections independently or together, the rod stops precisely at 0 mm (fully retracted), 175 mm, 270 mm, and the total travel of 445 mm. Each 63 mm bore section generates a push force of 1559 N at 0.5 MPa, scaling to 2805 N at the maximum operating pressure of 0.9 MPa.
This 63 mm bore model uses a 20 mm diameter piston rod with an M16x1.5 male thread and PT1/4 ports. The integrated adjustable air cushion at each end cap has a 28 mm cushion length, providing smooth deceleration for the moving mass. The tie-rod construction body has a base length of 249 mm, offering a rigid platform for multi-stop tasks like sorting or two-stage pressing where electronic drives would be over-engineered.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X175X270 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X175X270 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 175 / 270 mm |
| Total travel | 445 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) | 175 mm |
| P2 (section 2) | 270 mm |
| P3 (both extended) | 445 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 SCT63X175X270
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×175 | Stroke 1 (section 1) in mm. |
| ×270 | 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 SCT63X175X270 Is Used
Four-Way Part Sorting
Direct packages or components to four separate conveyor lanes by extending the rod to 175 mm, 270 mm, or the full 445 mm position, replacing complex multi-actuator diverters.
Two-Depth Press-Fit Assembly
Insert bushings or bearings to a shallow 175 mm depth and a deeper 270 mm depth in sequence, using a single cylinder to control two distinct press stations.
Multi-Stop Material Feeding
Advance strip material or trays in three precise increments (175, 270, and 445 mm) for progressive stamping, drilling, or labeling operations.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X175X270 the Right Cylinder?
Choose the SCT63X175X270 when your process requires four distinct mechanical stops without the complexity of servo controls or multiple single-stroke cylinders. The 175 mm and 270 mm strokes create a versatile 445 mm total reach. If your force requirement is lower, the SCT50 bore delivers 982 N push per section at 0.5 MPa; for higher thrust, the SCT80 bore steps up to 2513 N. Ensure your directional control valves can independently supply and exhaust each cylinder section to achieve all four positions.
For direct replacement, match an AirTAC SCT with a 63 mm bore, first stroke of 175 mm, second stroke of 270 mm, PT port thread, and basic mounting. Since the extended total travel of 445 mm can increase the risk of rod deflection under side loads, always guide the load externally with a rail system and avoid applying lateral force directly to the rod end.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 175 + 270 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 SCT63X175X270 FAQ
This model provides four discrete mechanical stop positions. The rod can be positioned at 0 mm (fully retracted), 175 mm (first section extended), 270 mm (second section extended), and 445 mm (both sections extended). These are fixed stops, not infinitely variable positions.
No, the SCT cylinder does not have a mechanical locking or holding brake. If air pressure is lost or the control valve centers, the piston can drift or drop. To securely hold a load at any intermediate position, you must add an external rod brake or a pilot-operated check valve in the circuit.
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