Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X100
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X100 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 150mm and 100mm give 4 controllable stop positions across a 250mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1150 mm
- Stroke 2100 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X100
The SCT40X150X100 is a double-acting, multi-position tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 100 mm, 150 mm, and the total travel of 250 mm. By pressurizing either of the two piston sections independently or together, you gain three intermediate stopping points without the complexity of servo controls. Each section generates a push force of 628 N at 0.5 MPa, making it suitable for repetitive sorting or diverting tasks.
Built on a durable tie-rod construction with a 16 mm diameter rod and PT1/4 ports, this 40 mm bore cylinder includes adjustable pneumatic cushioning (21 mm cushion length) for smooth end-of-stroke deceleration. The body length A(SCT) is 235 mm, providing a compact footprint for multi-stop applications. Standard TPU seals ensure reliable operation from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X100 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X100 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 150 / 100 mm |
| Total travel | 250 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) | 150 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 250 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 SCT40X150X100
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×150 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT40X150X100 Is Used
Two-Stage Part Diverting
Actuate section one to extend 100 mm for a primary divert, or section two for a 150 mm extension to a secondary lane. Pressurizing both achieves the full 250 mm travel for a third sortation path.
Multi-Depth Pressing
Use the 100 mm and 150 mm intermediate stops for two different pressing depths in an assembly fixture. The 250 mm full extension provides a third, deeper forming or clamping position.
Sequential Gate Control
Control a material gate with four distinct openings. The 0 mm, 100 mm, 150 mm, and 250 mm positions allow precise metering of different-sized components onto a conveyor without manual adjustment.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X150X100 the Right Cylinder?
Choose the SCT when your application needs up to four distinct mechanical stops from a single, compact actuator, eliminating the need to align two separate cylinders and external hard stops. If your force requirement is lower, the 32 mm bore SCT offers 402 N of push per section; for higher demands, the 50 mm bore version provides 982 N at the same 0.5 MPa pressure. Always match the bore, both strokes (150 mm and 100 mm), and PT port thread for a direct replacement.
For strokes over 300 mm, consider the potential for side-loading and rod deflection. When the total travel exceeds that threshold, implementing an external guide or rod support is recommended to protect the rod bearings and maintain alignment.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 150 + 100 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 SCT40X150X100 FAQ
This tandem cylinder provides 4 discrete stop positions. The rod can be positioned at 0 mm (fully retracted), 100 mm, 150 mm, and the total combined travel of 250 mm. These are fixed mechanical stops, not infinitely variable positions.
No, the SCT cylinder will not hold its position if air pressure is exhausted or lost; the piston can drift. If a load must be securely held at one of the 100 mm, 150 mm, or 250 mm stops without live pressure, you must add an external rod lock, brake, or a pilot-operated check valve to the circuit.
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