
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X300S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 300mm give 4 controllable stop positions across a 350mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
The SCT32X50X300S is a double-acting multi-position cylinder that delivers four fixed rod positions from its two tandem piston sections: 0 mm (fully retracted), 50 mm, 300 mm, and the combined total travel of 350 mm. Each 32 mm bore section generates 402 N of push force at 0.5 MPa, rising to 724 N at the maximum operating pressure of 0.9 MPa, making it a compact solution for light-duty multi-stop tasks.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state sensors to be directly mounted on the tie-rod barrel for end-of-stroke or intermediate position sensing. The 12 mm diameter piston rod and M10x1.25 rod thread provide adequate strength for guided loads, while the 21 mm adjustable air cushion at each end section decelerates the piston smoothly. The body length A(SCT) is 233 mm plus the strokes.
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X300S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 50 / 300 mm |
| Total travel | 350 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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.
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 50 mm |
| P2 (section 2) | 300 mm |
| P3 (both extended) | 350 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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.
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×300 | 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.
Uses the 50 mm stroke to partially open a gate for small parts and the 350 mm total stroke for full clearance, directing items down two separate chutes.
Provides two pressing depths at 50 mm and 300 mm for applying labels or inserts at different heights on a product, with the 350 mm position used for clearance during indexing.
Acts as a programmable mechanical stop with four positions to release one, two, or a full batch of components onto a conveyor line in a sequenced order.
Choose the SCT32X50X300S when your application requires four discrete mechanical stops without the complexity of servo control or multiple individual cylinders. The 50 mm and 300 mm stroke combination offers a short advance and a longer secondary position, ideal for two-step feeding or sorting. If higher force is needed, stepping up to the SCT40 bore provides 628 N of push per section at 0.5 MPa.
For replacement, match the bore (32 mm), both strokes (50 mm and 300 mm), the built-in magnet (-S), and the PT port thread. Because the 300 mm section stroke is substantial, ensure the load is externally guided to prevent rod bending and side-load damage, especially when the rod is fully extended to the 350 mm total travel position.
Multi-position checklist
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (section 1 extended), 300 mm (section 2 extended), and 350 mm (both sections extended for total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT32X50X300S will drift or drop if air pressure is lost or the control valve centers. To hold a load securely at the 300 mm or any intermediate position without live pressure, you must add an external rod lock, a mechanical brake, or a pilot-operated check valve.
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