Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X395X395
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X395X395 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 395mm and 395mm give 3 controllable stop positions across a 790mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1395 mm
- Stroke 2395 mm
- Total travel790 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X395X395
The SCT63X395X395 is a tandem multi-position pneumatic cylinder that provides three fixed, repeatable rod positions: fully retracted (0 mm), mid-stop at 395 mm, and fully extended at 790 mm total travel. Each of its two piston sections generates 1559 N of push force at 0.5 MPa, making it suitable for medium-duty sorting or diverting tasks where two distinct extended positions are needed without complex controls.
Built on a rugged tie-rod design with a 20 mm diameter piston rod and M16x1.5 rod-end threads, this cylinder includes a 28 mm adjustable air cushion on each section to decelerate the load smoothly at stroke ends. The PT1/4 port connections and standard TPU seals support an operating range of -20 to +70 °C, with a body length A of 249 mm plus the combined stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X395X395 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X395X395 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 395 / 395 mm |
| Total travel | 790 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) | 395 mm |
| P2 (both extended) | 790 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 SCT63X395X395
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×395 | Stroke 1 (section 1) in mm. |
| ×395 | 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 SCT63X395X395 Is Used
3-Position Diverter Gate
Controls a gate on a conveyor line with three distinct positions: closed (0 mm), partial divert at 395 mm, and full divert to an alternate lane at 790 mm.
Two-Depth Pressing
Executes a two-stage pressing operation where a part is first contacted at 395 mm for a pre-form step, then driven to the final 790 mm position for full compression.
Multi-Stop Part Transfer
Shifts a workpiece between three inline stations on an assembly fixture, stopping precisely at a pick point, an inspection camera, and a final placement location.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X395X395 the Right Cylinder?
Choosing an SCT tandem cylinder over two separate standard cylinders simplifies plumbing and mounting when you need up to three discrete stop points along a single linear axis. For this 63 mm bore model, the per-section push force is 1559 N at 0.5 MPa. If your load requires more force, stepping up to the 80 mm bore provides 2513 N per section; for a lighter load, the 50 mm bore offers 982 N. A direct replacement must match the 63 mm bore, both 395 mm section strokes, PT thread, and basic mounting.
With each section stroke nearing 400 mm, consider the potential for side loading and rod deflection, especially if the load is not guided. Using external guide rods or a rail system is recommended to protect the piston rod and bearing from bending moments during extension.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 395 + 395 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 SCT63X395X395 FAQ
This model provides 3 discrete mechanical stop positions because both section strokes are equal at 395 mm. The rod can be reliably positioned at 0 mm (fully retracted), 395 mm (one section extended), and 790 mm (both sections extended).
No, the SCT cylinder relies on active air pressure in one section to maintain the mid-stop. If pressure is exhausted or lost, the piston will drift from the 395 mm position. A mechanical rod lock or pilot-operated check valve is required to securely hold the load without live pressure.
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