Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 50mm give 4 controllable stop positions across a 125mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 175 mm
- Stroke 250 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X50S
The SCT50X75X50S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 50 mm, 75 mm, and the combined 125 mm total stroke. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, rising to 1767 N at the 0.9 MPa maximum operating pressure, driven through a 20 mm diameter piston rod with PT1/4 ports.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The 21 mm adjustable air cushion at each end helps manage end-of-stroke impact, and the body length A(SCT) is 243 mm. It is a genuine AirTAC unit, ideal for compact sorting or diverting tasks requiring three distinct extension points without complex servo controls.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 75 / 50 mm |
| Total travel | 125 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) | 75 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 125 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 SCT50X75X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT50X75X50S Is Used
Three-Position Diverter Gate
Uses the 0, 50, and 75 mm stops to direct parts into three separate chutes on a conveyor line, controlled by two 5/3 solenoid valves.
Multi-Depth Pressing Station
Provides two distinct pressing depths (50 mm and 75 mm) plus a retracted home position for loading, enabling a two-step forming process in one cycle.
Staged Component Feed
Advances a tray or pallet to two precise intermediate positions (50 mm and 75 mm) for sequential assembly or inspection operations before reaching the full 125 mm extension.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X50S the Right Cylinder?
Choose the SCT tandem cylinder when your application needs up to four discrete mechanical stops from a single pneumatic axis, avoiding the cost and plumbing of two separate cylinders with external brackets. This 50 mm bore provides 982 N of push per section at 0.5 MPa; if you need higher force, stepping up to the 63 mm bore (SCT63 series, 1559 N push per section) is a direct option. For lighter, faster cycles, the 40 mm bore (628 N push) may be suitable.
As a direct replacement, match the 50 mm bore, both 75 mm and 50 mm strokes, PT port thread, and the -S magnet option. The basic mounting configuration means no brackets are included, so order FA, FB, CA, CB, or LB mounts separately if needed. Note that the 75 mm stroke section is relatively short, so rod side-loading is minimal in standard horizontal applications.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 50 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 SCT50X75X50S FAQ
It provides 4 discrete mechanical stop positions: 0 mm (home), 50 mm (section 2 extended), 75 mm (section 1 extended), and 125 mm (both sections extended). These are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it is a direct form-fit-function replacement for any AirTAC SCT50X75X50S. Ensure the replacement matches the 50 mm bore, 75 mm/50 mm strokes, PT ports, and the -S magnet for sensor compatibility. The basic mounting style accepts the same FA/FB/CA/CB/LB accessories.
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Standard models usually ship in 3-4 days.
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