Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X90S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X90S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 90mm give 4 controllable stop positions across a 130mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 290 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X90S
The SCT50X40X90S is a double-acting tandem cylinder that delivers four fixed rod positions—0 mm, 40 mm, 90 mm, and the full 130 mm extension—by pressurizing its two piston sections independently or together. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, scaling up to 1767 N at the maximum operating pressure of 0.9 MPa, giving you precise, repeatable mechanical stops without complex servo controls.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The 20 mm diameter piston rod and 21 mm adjustable air cushion at each end ensure smooth deceleration, while the PT1/4 ports and standard M16x1.5 rod thread make integration straightforward.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X90S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X90S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 90 mm |
| Total travel | 130 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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) | 40 mm |
| P2 (section 2) | 90 mm |
| P3 (both extended) | 130 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X40X90S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×90 | 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 SCT50X40X90S Is Used
Two-Lane Part Diverting
Use the four positions (0, 40, 90, 130 mm) to sort components into two different conveyor lanes or reject stations, triggered by the integrated magnetic sensors.
Two-Step Assembly Insertion
Perform a partial insertion at 40 mm for alignment, followed by a full-depth press at 130 mm, with the 90 mm stop available for an intermediate quality check.
Multi-Stop Gate Control
Operate a material gate with three distinct opening heights (40, 90, and 130 mm) to regulate the flow of different-sized parts, with sensor confirmation at each position.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X90S the Right Cylinder?
Choose the SCT when your application needs two or more fixed stopping points that a single-rod cylinder cannot provide without external hard stops. This 50 mm bore unit suits mid-range force requirements; if you need a lighter assembly, the 40 mm bore SCT40 delivers 628 N push per section, while the 63 mm SCT63 steps up to 1559 N for heavier payloads. The 40 mm and 90 mm strokes create four distinct positions ideal for diverting parts to two separate lanes or a two-step insertion process.
For a direct replacement, match the 50 mm bore, both the 40 mm and 90 mm strokes, the PT port thread, and the built-in magnet. Since the shorter stroke section is under 300 mm, rod buckling is not a primary concern, but always ensure the load is guided if side forces are present.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 90 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 SCT50X40X90S FAQ
The four discrete rod positions are 0 mm (fully retracted), 40 mm (section one extended), 90 mm (section two extended), and 130 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT50X40X90S will drift or drop if pressure is exhausted. To hold a load at any mid-position without live pressure, you must add an external rod lock, a pilot-operated check valve, or a mechanical brake.
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