Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X275S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X275S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 275mm and 275mm give 3 controllable stop positions across a 550mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1275 mm
- Stroke 2275 mm
- Total travel550 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X275S
The SCT63X275X275S is a tie-rod multi-position cylinder that provides three fixed rod positions: fully retracted (0 mm), an intermediate stop at 275 mm, and full extension at 550 mm. Each piston section generates 1559 N of push force at 0.5 MPa, scaling to 2805 N at 0.9 MPa, driven by a 20 mm diameter rod through PT1/4 ports.
Equipped with a built-in magnet, this model accepts CMSG, DMSG, or EMSG sensors directly on the barrel for reliable end-of-stroke and mid-stroke position sensing. The 28 mm air cushion in each section decelerates the piston smoothly, and the 249 mm body length A(SCT) keeps the assembly compact for its 550 mm total travel.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X275S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X275S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 275 / 275 mm |
| Total travel | 550 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, 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 275 mm |
| P2 (both extended) | 550 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 SCT63X275X275S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×275 | Stroke 1 (section 1) in mm. |
| ×275 | 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 SCT63X275X275S Is Used
Two-Position Sorting Gate
Direct packages to different conveyor lanes by stopping the cylinder rod at 275 mm for the left chute and 550 mm for the right chute, simplifying actuator count.
Two-Depth Clamping Fixture
Clamp a thin workpiece at the 275 mm intermediate stop and a thicker part at the full 550 mm extension in a single automated welding or assembly cell.
Multi-Step Part Transfer
Use the 275 mm and 550 mm positions to pick a component from one nest and place it precisely into two different downstream nests without reprogramming.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X275S the Right Cylinder?
Choose the SCT63X275X275S when your process needs a robust 63 mm bore actuator that can stop reliably at a midpoint and full extension without the complexity of two separate cylinders and external hard stops. If the 1559 N push force per section at 0.5 MPa is insufficient, stepping up to an SCT80 bore provides 2513 N per section; for lighter duties, the SCT50 bore offers 982 N. Ensure the replacement matches the 63 mm bore, both 275 mm strokes, PT port thread, and the integrated magnet (-S suffix).
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 275 + 275 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 SCT63X275X275S FAQ
It provides three distinct mechanical stops: 0 mm (fully retracted), 275 mm (first section extended), and 550 mm (both sections extended for total travel). Because the two strokes are equal, the 275 mm position is a single midpoint.
Yes. The -S suffix indicates a built-in magnet, allowing you to mount AirTAC CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the cylinder barrel to detect each of the three piston positions.
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