Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 50mm give 4 controllable stop positions across a 250mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1200 mm
- Stroke 250 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X50S
The SCT63X200X50S is a double-acting multi-position cylinder that delivers four fixed rod positions by combining two piston sections on a single rod line. The reachable stops are 0 mm (fully retracted), 50 mm, 200 mm, and the total travel of 250 mm, selected by pressurising either or both sections. Each section provides a push force of 1559 N at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa.
This model features a 20 mm diameter rod and PT1/4 ports, with a 28 mm adjustable air cushion at each end for smooth deceleration. The built-in magnet, designated by the -S suffix, allows CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing. The body length A(SCT) for this 63 mm bore is 249 mm, and the standard operating temperature range with TPU seals is -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 200 / 50 mm |
| Total travel | 250 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, 28 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) | 200 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 250 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X200X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×200 | 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 SCT63X200X50S Is Used
Two-Stage Sorting Gate
Actuate a diverter gate to three distinct positions—retracted for lane A, extended 50 mm for lane B, and fully extended 250 mm for lane C—using simple pneumatic valves, creating a robust sorting station.
Multi-Level Part Staging
Position a stop pin or part nest at two different heights (50 mm and 200 mm) on a conveyor line. The 0 mm retracted position allows parts to pass, while the other stops stage components for different assembly processes.
Two-Depth Press or Clamp
Provide a light clamp or partial press at the 50 mm stroke, and a full-force press at the 200 mm stroke. The 1559 N per-section force at 0.5 MPa is suitable for consistent, repeatable low-to-medium force applications.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X50S the Right Cylinder?
An SCT tandem cylinder is the right choice when an application needs two or more discrete, repeatable stop positions without the complexity of servo control. This 63 mm bore model, with its 200 mm and 50 mm stroke sections, replaces setups that might otherwise require two separate cylinders and external hard stops, simplifying the pneumatic circuit and mechanical design. If a higher force is needed, stepping up to the 80 mm bore (SCT80) provides 2513 N of push per section at 0.5 MPa.
For a direct replacement, match the 63 mm bore, both strokes (200 mm and 50 mm), PT port thread, and the -S magnet option. This basic mounting configuration has no integral bracket, so the cylinder body must be supported by the mounting accessories from the SCT set, such as an FA flange or LB foot. With a combined stroke of 250 mm, the rod is well-supported, but for applications with significant side loads, an external guide or rod alignment coupler is recommended to prevent bending and ensure long seal life.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 200 + 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 SCT63X200X50S FAQ
This cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (second section extended), 200 mm (first section extended), and 250 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT63X200X50S will drift or drop if air pressure is lost or a directional valve is centered, as it relies on active pressure to maintain position. If a load must be safely held at a stop without live pressure, you must add an external mechanical rod lock or a pilot-operated check valve.
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