Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X63X63S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X63X63S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 63mm and 63mm give 3 controllable stop positions across a 126mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 163 mm
- Stroke 263 mm
- Total travel126 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X63X63S
The SCT50X63X63 is a tandem multi-position cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke at 63 mm, and fully extended at 126 mm. Each 50 mm bore piston section provides 982 N of push force at 0.5 MPa, making it suitable for sorting gates or two-stage clamping where intermediate positioning is required.
Built on a durable tie-rod construction with a 20 mm diameter rod and M16x1.5 rod thread, this cylinder includes adjustable air cushioning with a 21 mm cushion length for end-of-stroke deceleration. The PT1/4 ports supply each section independently, and the body length A is 243 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X63X63S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X63X63S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 63 / 63 mm |
| Total travel | 126 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 63 mm |
| P2 (both extended) | 126 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 SCT50X63X63S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×63 | Stroke 1 (section 1) in mm. |
| ×63 | 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 SCT50X63X63S Is Used
3-Position Diverter Gate
Actuates a conveyor diverter to three lanes: retracted for lane one, mid-stroke at 63 mm for lane two, and fully extended at 126 mm for lane three, all from a single compact cylinder.
Two-Stage Clamping Fixture
Provides a low-force pre-clamp at the 63 mm mid-position before applying full clamping pressure at the 126 mm extended position, protecting delicate parts during assembly.
Multi-Depth Stop for Pressing
Offers two distinct pressing depths in a single stroke line. The 63 mm and 126 mm stops allow for a shallow form and a deep draw operation without changing tooling.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X63X63S the Right Cylinder?
Choose the SCT50X63X63 when your application needs a compact unit providing three positive stops without the complexity of two separate cylinders and external hard stops. If the 982 N push force per section at 0.5 MPa is insufficient, consider stepping up to the 63 mm bore SCT63X63X63, which offers 1559 N per section. For a direct replacement, match the 50 mm bore, both 63 mm strokes, PT port thread, and basic mounting configuration.
When ordering a replacement, ensure the model code matches exactly: SCT50X63X63. This unit uses the standard TPU seals and PT threads; no magnet or mounting brackets are included in this basic configuration.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 63 + 63 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 SCT50X63X63S FAQ
This model provides three distinct mechanical stop positions because both piston sections have an equal 63 mm stroke. The rod positions are 0 mm (fully retracted), 63 mm (one section extended), and 126 mm (both sections extended).
No, like all standard pneumatic cylinders, the SCT50X63X63 will not hold its position if air pressure is lost or the valve centers. The piston can drift. If you need to lock the load at the 63 mm stop without pressure, you must add an external rod lock or a pilot-operated check valve.
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