Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X63X12
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X63X12 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 63mm and 12mm give 4 controllable stop positions across a 75mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 163 mm
- Stroke 212 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X63X12
The SCT63X63X12 is a tandem multi-position cylinder that delivers four fixed rod positions: fully retracted (0 mm), 63 mm, 12 mm, and the combined 75 mm total travel. By pressurising either piston section independently or both together, you select the exact stop needed for two-depth pressing or sorting tasks. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum 0.9 MPa operating pressure.
Built on a durable tie-rod design with a 20 mm diameter piston rod and M16x1.5 rod thread, this cylinder includes a 28 mm adjustable air cushion in each section for smooth deceleration. The body length A(SCT) is 249 mm plus the 75 mm total stroke. Standard PT1/4 ports and TPU seals suit filtered-air systems from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X63X12 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X63X12 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 63 / 12 mm |
| Total travel | 75 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) | 63 mm |
| P2 (section 2) | 12 mm |
| P3 (both extended) | 75 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 SCT63X63X12
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×63 | Stroke 1 (section 1) in mm. |
| ×12 | 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 SCT63X63X12 Is Used
Two-Depth Press-Fit Assembly
Uses the 12 mm and 63 mm strokes to insert a bushing to a shallow depth, then a bearing to a deeper depth in the same fixture, eliminating a secondary press station.
Dual-Lane Part Diverting
The 0, 12, 63, and 75 mm positions actuate a diverter gate to sort parts into three separate lanes on a conveyor, controlled by a single tandem cylinder.
Multi-Stop Glue Dispensing
Positions a dispensing nozzle at three precise heights above a workpiece for applying adhesive beads at different Z-levels, using the 12 mm and 63 mm discrete stops.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X63X12 the Right Cylinder?
Choose the SCT63X63X12 when your application needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 63 mm bore provides a mid-range force class; if you need more thrust, stepping up to the 80 mm bore delivers 2513 N push per section at 0.5 MPa. For a lighter, more compact solution, the 50 mm bore offers 982 N push.
This model is a direct replacement for an existing AirTAC SCT63X63X12 with basic mounting, PT threads, and no magnet. When replacing, you must match both the 63 mm and 12 mm section strokes exactly, as well as the port thread, to ensure the four position stops are replicated.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 63 + 12 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 SCT63X63X12 FAQ
It provides four distinct mechanical stop positions: 0 mm (fully retracted), 63 mm (section 1 extended), 12 mm (section 2 extended), and 75 mm (both sections extended, total travel). The unequal strokes create four unique rod-end locations.
No. Like all standard pneumatic cylinders, the SCT63X63X12 will drift or drop if pressure is lost or a valve is centered. The multi-position feature provides discrete stops under active pressure only. If a load must be held without live pressure, you must add an external rod brake, mechanical lock, or pilot-operated check valve.
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