Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X200S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X200S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 200mm give 4 controllable stop positions across a 225mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 2200 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X200S
The SCT63X25X200S is a double-acting multi-position tandem cylinder that delivers four precise mechanical stops along its stroke: 0 mm (fully retracted), 25 mm, 200 mm, and the combined total travel of 225 mm. Each piston section generates a push force of 1559 N at 0.5 MPa, scaling to 2805 N at the maximum operating pressure of 0.9 MPa, with a 20 mm piston rod and M16x1.5 rod thread.
This unit includes a built-in magnet (-S suffix), allowing direct clamping of CMSG, DMSG, or EMSG sensors to the tie-rod barrel for non-contact position feedback at each stop. The 28 mm adjustable air cushion at both ends of the assembly decelerates the load smoothly, and the 249 mm body length A dimension helps when planning compact multi-stop stations.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X200S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X200S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 200 mm |
| Total travel | 225 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) | 25 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 225 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 SCT63X25X200S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT63X25X200S Is Used
Two-Depth Press Insertion
Use the 25 mm stop for a partial pre-insertion or pilot depth and the 200 mm or 225 mm stop for full-depth pressing, all from one compact tandem cylinder with sensor confirmation at each position.
Dual-Stop Gate or Diverter
Actuate a material gate to a 25 mm partial-open position for small parts and a full 225 mm open position for larger items, with magnetic sensors verifying the gate state at each discrete stop.
Multi-Stop Part Staging
Index a workpiece carrier to three distinct positions along a short transfer line: home, a 200 mm advance, and a 225 mm final position, using the 25 mm differential for a precise final locating step.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X200S the Right Cylinder?
Select the SCT63X25X200S when a single cylinder must provide two independent intermediate positions—here a short 25 mm advance and a longer 200 mm stroke—without the complexity of two separate actuators and external hard stops. If the 1559 N push force per section is marginal, stepping up to the 80 mm bore delivers 2513 N at the same 0.5 MPa; if the force is excessive, the 50 mm bore provides 982 N. The magnet-equipped design is ready for sensor integration out of the box.
When replacing an existing unit, match the 63 mm bore, both strokes (25 mm and 200 mm), PT port thread, basic mounting, and the -S magnet option. For strokes over 200 mm in the longer section, consider external guides or a rod-alignment coupler to prevent side-loading and bending of the 20 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 200 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 SCT63X25X200S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (section 1 extended), 200 mm (section 2 extended), and 225 mm (both sections extended). Because the two strokes are different, all four positions are unique.
No. Like all standard pneumatic cylinders, the SCT63X25X200S will drift or drop if pressure is lost or the valve centers. To hold a load at any intermediate stop without live pressure, you must add an external rod lock, a pilot-operated check valve, or a mechanical brake.
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