Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X400X20S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X400X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 400mm and 20mm give 4 controllable stop positions across a 420mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 1400 mm
- Stroke 220 mm
- Total travel420 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X400X20S
The SCT32X400X20S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: 0 mm, 400 mm, 20 mm, and the combined travel of 420 mm. Each piston section generates a push force of 402 N at 0.5 MPa, making it suitable for light-duty sorting or diverting tasks where two distinct extended stops are required from a single compact unit.
This model features a built-in magnet (suffix -S), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the 32 mm bore barrel for reliable end-of-stroke or intermediate position detection. The 12 mm diameter rod and 21 mm adjustable air cushion at each end ensure smooth, controlled deceleration across the full 30-800 mm/s speed range.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X400X20S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X400X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 400 / 20 mm |
| Total travel | 420 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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) | 400 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 420 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X400X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×400 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT32X400X20S Is Used
Two-Way Part Diverting
Uses the 400 mm and 420 mm positions to direct parts to two separate conveyor lanes from a single feed point, controlled by pressurizing different cylinder sections.
Dual-Depth Stop Gate
Provides a primary gate position at 400 mm and a secondary fine-adjustment stop at 420 mm for sequencing tall and short packages on a packaging line.
Two-Stage Clamping
Applies an initial low-force clamp at the 400 mm position, then a final high-force clamp at the 420 mm combined stroke for delicate assembly processes.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X400X20S the Right Cylinder?
Choose the SCT32X400X20S when your application needs two separate extended positions without the complexity of two independent cylinders and external hard stops. The 400 mm primary stroke handles the long travel, while the 20 mm secondary stroke provides a precise short advance. If higher force is needed, stepping up to the 40 mm bore delivers 628 N push per section at the same 0.5 MPa pressure. For direct replacement, match the 32 mm bore, both strokes (400 mm and 20 mm), PT port thread, basic mounting, and the -S magnet option. With a 400 mm section stroke, ensure the rod is adequately guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 400 + 20 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 SCT32X400X20S FAQ
It provides four discrete mechanical stops: fully retracted (0 mm), the first section extended (400 mm), the second section extended (20 mm), and both sections extended together for the total travel of 420 mm.
While two SC cylinders could replicate the strokes, the SCT32X400X20S integrates both motions on a single common rod axis, saving space and ensuring the two positions are inherently coaxial. A direct replacement requires an SCT with the same 32 mm bore, 400 mm and 20 mm strokes, PT ports, and the -S magnet option.
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