
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X150S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 130mm and 150mm give 4 controllable stop positions across a 280mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
The SCT40X130X150S is a double-acting tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 130 mm, 150 mm, and the full 280 mm extension. By pressurising either piston section individually or both together, you gain simple, repeatable multi-stop motion without complex electronics. Each section provides a push force of 628 N at 0.5 MPa, rising to 1130 N at 0.9 MPa, driven through a 16 mm diameter rod.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to be mounted directly on the tie-rod barrel for reliable end-of-stroke or intermediate position sensing. The body length A(SCT) is 235 mm, with an adjustable air cushion of 21 mm at each end to decelerate the load smoothly. Standard PT1/4 ports and default TPU seals suit general industrial environments from -20 to +70 °C.
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X150S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 130 / 150 mm |
| Total travel | 280 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.
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 130 mm |
| P2 (section 2) | 150 mm |
| P3 (both extended) | 280 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 | 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.
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×130 | Stroke 1 (section 1) in mm. |
| ×150 | 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.
Use the 130 mm and 150 mm mid-stops to align a chute with two separate conveyor lines, while the 0 mm and 280 mm positions serve as home and a third bypass route.
Achieve two distinct pressing depths in a single cycle. The 130 mm stroke provides a partial pre-compression, and the 150 mm stroke delivers the final form, all with one compact actuator.
Control a pusher arm to advance parts in two increments. The 130 mm stroke moves a part to an inspection station, and the 150 mm stroke indexes it to the next assembly nest.
Choose this 4-position SCT when a process needs two distinct mid-stroke stopping points plus full retraction and extension, such as a diverter gate with a partial-open bypass. The unequal strokes (130 mm and 150 mm) create clearly separated positions that are simpler and more robust than an SC cylinder with external hard stops. If you require higher force, stepping up to the 50 mm bore SCT50 series provides 982 N of push per section at 0.5 MPa. For a drop-in replacement, match the 40 mm bore, both strokes of 130 mm and 150 mm, the -S magnet, and PT port thread exactly.
Multi-position checklist
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 130 mm, 150 mm, and 280 mm (fully extended, which is the sum of both strokes). You select the position by pressurising the first section, the second section, or both simultaneously.
Yes, it is a direct replacement for two independently controlled SC40 cylinders with 130 mm and 150 mm strokes acting on a common rod line. To ensure compatibility, the replacement must match the 40 mm bore, both strokes, the built-in magnet (-S), and the PT port thread.
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