Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X30
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 30mm give 3 controllable stop positions across a 60mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 130 mm
- Stroke 230 mm
- Total travel60 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X30
The SCT40X30X30 is a double-acting multi-position cylinder that provides three fixed rod positions: fully retracted (0 mm), 30 mm, and the combined 60 mm total travel. Each 40 mm bore section generates approximately 628 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where two intermediate stops are required.
Built on a rugged tie-rod design with a 16 mm diameter piston rod and M12x1.25 rod thread, this cylinder includes a 21 mm adjustable air cushion in each section to decelerate the load smoothly. The body length A(SCT) is 235 mm, and the standard PT1/4 ports keep pneumatic connections simple.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X30 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 30 / 30 mm |
| Total travel | 60 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 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) | 30 mm |
| P2 (both extended) | 60 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT40X30X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT40X30X30 Is Used
Two-Way Diverter Gate
Actuates a flap to three positions—closed, partial bypass, and full divert—directing small packages on a conveyor line without needing two actuators.
Multi-Stop Clamping
Provides a retracted, light-touch, and full-clamp position for holding delicate assemblies, preventing over-compression by using the discrete 30 mm and 60 mm stops.
Two-Depth Pressing
Drives a tool to a pre-set 30 mm depth for a pilot operation, then advances to the full 60 mm depth for final forming, all from one compact tandem unit.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X30 the Right Cylinder?
Choose the SCT40X30X30 when your application needs two distinct extended positions without the complexity of two separate cylinders and external hard stops. If you need higher thrust, stepping up to the 50 mm bore SCT50X30X30 provides about 982 N of push per section at 0.5 MPa. For a direct replacement, match the 40 mm bore, both 30 mm strokes, PT port thread, and basic mounting style precisely.
Since both strokes are short at 30 mm, rod bending under side load is rarely a concern, but always align the load axially to maximize seal life.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 30 + 30 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 SCT40X30X30 FAQ
Because both section strokes are equal at 30 mm, this model provides 3 distinct mechanical stop positions: 0 mm (fully retracted), 30 mm (first section extended), and 60 mm (both sections extended, total travel).
No, the SCT40X30X30 does not have a mechanical lock. If air pressure is lost or the valve centers, the piston can drift. To hold a load securely at any intermediate position without live pressure, you must add an external rod brake or a pilot-operated check valve.
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