Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 75mm give 4 controllable stop positions across a 275mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1200 mm
- Stroke 275 mm
- Total travel275 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S
The SCT40X200X75S is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions from a single compact assembly: fully retracted (0 mm), 75 mm, 200 mm, and the total extended travel of 275 mm. Each 40 mm bore piston section generates 628 N of push force at 0.5 MPa, providing robust actuation for multi-step processes without the complexity of servo controls.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The 16 mm diameter piston rod and 21 mm adjustable air cushion at each end ensure smooth deceleration, while the PT1/4 port connections and 235 mm body length (A dimension) make it a direct fit for standard pneumatic layouts.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 200 / 75 mm |
| Total travel | 275 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.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 200 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 275 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 (Ø40mm)
| 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.
Model Code: Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×200 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT40X200X75S Is Used
Two-Stage Part Diverting
Direct parts to three separate conveyor lanes by stopping the rod at 75 mm for lane one, 200 mm for lane two, and full 275 mm extension for lane three.
Multi-Depth Pressing
Perform a shallow pre-press at 75 mm stroke, a main forming operation at 200 mm, and a final ejection stroke at the combined 275 mm position.
Sequential Clamping
Clamp a workpiece with low force at the 75 mm position for alignment, then apply full clamping pressure by extending to the 200 mm stop before machining begins.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X200X75S the Right Cylinder?
Choose the SCT40X200X75S when your application requires four distinct mechanical stop positions without the cost of multiple actuators and external hard stops. For lighter positioning tasks, stepping down to a 32 mm bore reduces per-section push force to 402 N at 0.5 MPa, while moving up to a 50 mm bore increases it to 982 N if higher thrust is needed. The 200 mm stroke section is long enough that guiding the rod externally is recommended to prevent side-load binding and ensure consistent positioning accuracy.
As a direct replacement, match the 40 mm bore, both strokes (200 mm and 75 mm), PT port thread, and the integrated magnet (-S). This basic mount configuration accepts the full range of SCT accessories—FA/FB flanges, CA/CB devises, or LB feet—if future mounting changes are required.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 200 + 75 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 SCT40X200X75S FAQ
This cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (stroke 2 only), 200 mm (stroke 1 only), and 275 mm (both strokes extended). The positions are fixed by the cylinder's internal structure and are not infinitely adjustable.
Yes, it is designed as a space-saving alternative. A direct replacement must match the 40 mm bore, 200 mm and 75 mm strokes, PT ports, and the integrated magnet. The cylinder provides the same per-section force (628 N push at 0.5 MPa) as a standard SC40, but in a single tandem body.
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