Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X300
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X300 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 300mm and 300mm give 3 controllable stop positions across a 600mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1300 mm
- Stroke 2300 mm
- Total travel600 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X300
The SCT63X300X300 is a tandem multi-position cylinder that provides three fixed rod positions: fully retracted (0 mm), an intermediate stop at 300 mm, and full extension at 600 mm. Both piston sections share a common 20 mm diameter rod and are housed in a tie-rod body with a length of 249 mm, using PT1/4 ports and adjustable air cushioning with a 28 mm cushion length.
Each actuated 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 balanced stroke configuration is ideal for diverting or sorting applications where a part must be precisely presented at a mid-point and an end-point without the complexity of two separate cylinders and external stops.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X300 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X300 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 300 / 300 mm |
| Total travel | 600 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) | 300 mm |
| P2 (both extended) | 600 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 SCT63X300X300
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×300 | Stroke 1 (section 1) in mm. |
| ×300 | 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 SCT63X300X300 Is Used
3-Position Diverter Gate
The rod stops at 0, 300, and 600 mm to direct product flow into three separate lanes on a conveyor, using a single actuator instead of two.
Two-Depth Pressing Station
Achieves a partial press depth at 300 mm for pre-forming and a full depth at 600 mm for final forming, with repeatable mechanical stops.
Multi-Level Pallet Stop
Controls a stop blade at a retracted home position, a mid-height stop for light totes, and a full-height stop for heavy pallets in a gravity conveyor.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X300 the Right Cylinder?
Selecting an SCT63X300X300 replaces the need to synchronise two individual cylinders for a three-position task, saving space and eliminating the risk of mid-stroke collision. If the 1559 N push force per section at 0.5 MPa is insufficient, stepping up to the 80 mm bore provides 2513 N per section; if it exceeds the requirement, the 50 mm bore offers 982 N per section. For a drop-in replacement, match the 63 mm bore, both 300 mm strokes, PT port thread, and basic mounting configuration.
With a combined stroke of 600 mm, the rod is fully supported by the front bushing and the mid-body, but for applications with significant transverse loading at full extension, an external guide rail or rod alignment coupler is recommended to prevent bending and ensure long seal life.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 300 + 300 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 SCT63X300X300 FAQ
It provides three distinct mechanical stop positions: 0 mm (fully retracted), 300 mm (intermediate), and 600 mm (fully extended). The total travel is the sum of the two 300 mm section strokes.
No, the SCT is a purely pneumatic positioning cylinder and does not include a mechanical lock or brake. If the actuating pressure for the front section is exhausted or lost, the rod will drift from the 300 mm position. A pilot-operated check valve or external rod lock is required for static load holding.
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