Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X350S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 350mm give 4 controllable stop positions across a 425mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 2350 mm
- Total travel425 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X350S
The SCT63X75X350S tandem cylinder provides four fixed rod positions: fully retracted, 75 mm, 350 mm, and the combined 425 mm stroke. This discrete multi-stop action is achieved by pressurising either or both of its two piston sections, making it ideal for diverting or two-depth positioning tasks without complex controls. Each section delivers 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum 0.9 MPa operating pressure.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 20 mm diameter piston rod and 28 mm adjustable air cushion at each end ensure smooth deceleration across the combined 425 mm travel. The body length A is 249 mm plus strokes, fitting compact multi-stop stations.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X350S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 350 mm |
| Total travel | 425 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) | 75 mm |
| P2 (section 2) | 350 mm |
| P3 (both extended) | 425 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 SCT63X75X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT63X75X350S Is Used
Two-Stage Diverter
Uses the 75 mm and 350 mm stops to route parts to two separate conveyor lanes from a single infeed point, activated by different valve signals.
Dual-Depth Pressing
Provides a fast approach at 350 mm and a controlled final press depth at 425 mm total travel, or a shallow 75 mm pre-press operation.
Multi-Stop Gate
Acts as a product gate with a closed position (0 mm), a low gap (75 mm), and a high gap (350 mm or 425 mm) for different package sizes.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X350S the Right Cylinder?
Select the SCT63 when you need up to four fixed mechanical stops without the complexity of two separate cylinders and external hard stops. The 75 mm and 350 mm stroke combination suits a short pre-position and a longer main working stroke. If higher force is required, consider stepping up to the SCT80 bore, which provides 2513 N of push per section at 0.5 MPa. For replacement, match the 63 mm bore, both 75 mm and 350 mm strokes, the PT port thread, and the -S magnet option. With the 350 mm section stroke extended, ensure the rod is guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 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 SCT63X75X350S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm, 350 mm, and 425 mm (75+350). These are fixed by the two stroke sections and are not infinitely adjustable.
The SCT integrates two strokes on a single common rod, guaranteeing coaxial alignment and reducing mounting space compared to two individual cylinders with a coupled rod. It simplifies plumbing to achieve the three extended positions.
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