Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X400X350S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X400X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 400mm and 350mm give 4 controllable stop positions across a 750mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1400 mm
- Stroke 2350 mm
- Total travel750 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X400X350S
The SCT63X400X350S is a tandem multi-position cylinder that delivers four discrete rod stops: 0 mm (fully retracted), 400 mm, 350 mm, and the combined 750 mm total travel. Each actuated piston section provides a push force of 1559 N at 0.5 MPa, stepping up to 2805 N at 0.9 MPa, driven through a 20 mm diameter rod.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The cylinder body length (A dimension) is 249 mm, and it uses a 28 mm air cushion for smooth, adjustable end-of-stroke deceleration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X400X350S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X400X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 400 / 350 mm |
| Total travel | 750 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) | 400 mm |
| P2 (section 2) | 350 mm |
| P3 (both extended) | 750 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 SCT63X400X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×400 | Stroke 1 (section 1) in mm. |
| ×350 | 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 SCT63X400X350S Is Used
Multi-Stop Diverter Gates
Uses the four distinct positions (0, 350, 400, 750 mm) to route packages or parts to three different conveyor lanes from a single infeed point.
Two-Depth Press Operations
Provides a retracted safe position, a 350 mm pre-press, a 400 mm intermediate form, and a full 750 mm stroke for deep-draw or sequential forming tasks.
Staged Assembly Fixtures
Positions a workpiece at 350 mm for adhesive dispensing, 400 mm for component placement, and 750 mm for a final riveting station, all with one cylinder.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X400X350S the Right Cylinder?
Choose this SCT when a single actuator must index a load to four fixed positions without the complexity of two separate cylinders and external hard stops. The 400 mm and 350 mm stroke combination creates asymmetric stop points ideal for two-step feeding or sorting. If higher force is needed, consider the SCT80 series, which provides 2513 N of push per section at 0.5 MPa. For a direct replacement, match the 63 mm bore, both 400 mm and 350 mm strokes, PT port thread, basic mounting, and the -S magnet option. With a 400 mm stroke section, ensure the rod is guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 400 + 350 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 SCT63X400X350S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 400 mm (first section extended), 350 mm (second section extended), and 750 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a single common rod, guaranteeing coaxial alignment and reducing mounting space compared to two individual cylinders with a coupler. It also simplifies pneumatic control for fixed-sequence, multi-stop motions. The per-section force is identical to a standard SC63 cylinder: 1559 N push at 0.5 MPa.
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