Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 175mm give 4 controllable stop positions across a 200mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 2175 mm
- Total travel200 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X175S
The SCT63X25X175S is a tandem multi-position pneumatic cylinder providing four discrete rod stops: 0 mm, 25 mm, 175 mm, and the full combined travel of 200 mm. Each 63 mm bore section delivers 1559 N of push force at 0.5 MPa, driven by a 20 mm diameter piston rod for robust linear guidance.
This model includes a built-in magnet (suffix -S), allowing easy external mounting of CMSG, DMSG, or EMSG sensors for precise end-of-stroke or intermediate position detection. The tie-rod construction features a 28 mm adjustable air cushion on each section for controlled deceleration, with a total body length A of 249 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 175 mm |
| Total travel | 200 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) | 175 mm |
| P3 (both extended) | 200 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 SCT63X25X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT63X25X175S Is Used
Two-Stage Sorting Gate
Use the 25 mm stroke to partially open a diverter gate for one product lane, and the full 200 mm travel to open it completely for a second lane, creating a compact 3-route sorting system.
Depth-Selective Pressing
Achieve two distinct pressing depths in a single cycle. The 25 mm stop sets a pre-press or light-contact position, while the 200 mm position delivers the full forming stroke, all verified by magnetic sensors.
Multi-Stop Part Feeding
Control a part escapement mechanism with three active positions (retracted, 25 mm, 200 mm) to meter components of different sizes onto a conveyor, using the sensor magnet for cycle confirmation.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X175S the Right Cylinder?
Select the SCT63X25X175S when your process requires a short initial advance of 25 mm followed by a longer 175 mm stroke, enabling four distinct positions from two pneumatic signals. This tandem unit replaces the complexity of two separate cylinders with external stops, simplifying plumbing and control logic. For higher force requirements, consider stepping up to the 80 mm bore (SCT80), which provides 2513 N of push force per section at 0.5 MPa.
As a direct replacement, match the 63 mm bore, the exact stroke pair of 25 mm and 175 mm, PT port thread, basic mounting, and the -S magnet option. For strokes exceeding 300 mm in total travel, evaluate the application for potential side-loading and consider adding an external guide or rod support to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 175 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 SCT63X25X175S FAQ
This cylinder provides four distinct rod positions: fully retracted (0 mm), first section extended (25 mm), second section extended (175 mm), and both sections extended (200 mm). The positions are selected by pressurizing the two piston sections independently or together.
The SCT tandem cylinder integrates both strokes onto a single common rod, guaranteeing coaxial alignment and reducing overall installation length compared to two back-to-back cylinders. It also simplifies the pneumatic circuit, requiring only two control valves to achieve four mechanical stops, which reduces component count and potential leak points.
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