Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X45
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X45 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 45mm give 4 controllable stop positions across a 95mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 245 mm
- Total travel95 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X45
The SCT40X50X45 is a tandem multi-position cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 50 mm, 45 mm, and a total extended travel of 95 mm. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where two intermediate stops are needed without external hard stops.
Built on a durable tie-rod design with a 16 mm diameter rod and M12x1.25 rod thread, this cylinder includes adjustable pneumatic cushioning with a 21 mm cushion length. The body length A is 235 mm, and it operates on filtered air from 0.15 to 1.0 MPa across a standard temperature range of -20 to +70 °C with default TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X45 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X45 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 45 mm |
| Total travel | 95 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 50 mm |
| P2 (section 2) | 45 mm |
| P3 (both extended) | 95 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 SCT40X50X45
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×45 | 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 SCT40X50X45 Is Used
Two-Way Part Diverting
Use the 50 mm and 45 mm stroke positions to guide parts into two separate chutes from a single conveyor lane, simplifying line design.
Sequential Gate Control
Actuate a gate to a partially open 45 mm position for metering small items, then to the full 95 mm open position for bulk flow.
Dual-Depth Pressing
Perform a light pre-press at the 45 mm stop and a final form at the 95 mm total travel, controlled by pressurizing the two sections independently.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X45 the Right Cylinder?
Choose the SCT when your process requires two distinct intermediate positions from a single actuator, eliminating the complexity of aligning two separate cylinders. If higher force is needed, stepping up to the 50 mm bore provides 982 N of push per section at the same 0.5 MPa pressure. For a direct replacement, match the 40 mm bore, both the 50 mm and 45 mm strokes, PT port thread, and basic mounting configuration.
With a total travel of 95 mm, rod deflection is minimal under axial loads, but always ensure the load is guided if significant side forces are present.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 45 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 SCT40X50X45 FAQ
It provides 4 discrete positions because the strokes are unequal: 0 mm (retracted), 50 mm (section 1 extended), 45 mm (section 2 extended), and 95 mm (both sections extended).
Yes, if you need the specific 50 mm and 45 mm intermediate stops. It replaces two separate actuators and their mounting hardware with a single tandem unit, saving space. Ensure the replacement matches the 40 mm bore, PT ports, and basic mounting.
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