Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X20S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 35mm and 20mm give 4 controllable stop positions across a 55mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 135 mm
- Stroke 220 mm
- Total travel55 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X20S
The SCT32X35X20S is a tandem multi-position cylinder that delivers four fixed rod positions—0 mm (fully retracted), 35 mm, 20 mm, and the total travel of 55 mm—by pressurising its two piston sections independently. With a 12 mm rod and PT1/8 ports, each section generates 402 N of push force at 0.5 MPa, making it a compact solution for light-duty sorting or diverting tasks where distinct mechanical stops are required.
A built-in magnet (suffix -S) allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. The cylinder body has a fixed length of 233 mm (A dimension) and uses an adjustable air cushion of 21 mm to decelerate the load smoothly at each end of the 55 mm total stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X20S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 35 / 20 mm |
| Total travel | 55 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) | 35 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 55 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 SCT32X35X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×35 | 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 SCT32X35X20S Is Used
Two-Way Diverter Gate
Uses the 35 mm and 20 mm positions to route packages onto two separate conveyor lanes from a single infeed point.
Multi-Depth Label Press
Applies labels at two different insertion depths (20 mm and 35 mm) on a single product, controlled by switching the active cylinder section.
Staged Component Ejection
Ejects small parts to a first collection bin at 20 mm travel or a second bin at 35 mm, using the 55 mm total stroke for a reject chute.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X20S the Right Cylinder?
Choose the SCT32X35X20S when your application needs four precise, repeatable stop positions without the complexity of servo controls or multiple single-stroke cylinders. If the 402 N push force per section at 0.5 MPa is insufficient, stepping up to a 40 mm bore provides 628 N per section. For replacement, match the 32 mm bore, both the 35 mm and 20 mm strokes, PT port thread, basic mounting, and the -S magnet option exactly with another AirTAC SCT unit.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 35 + 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 SCT32X35X20S FAQ
This model provides four discrete positions: 0 mm (fully retracted), 35 mm (section 1 extended), 20 mm (section 2 extended), and 55 mm (both sections extended, total travel).
Only if your application requires the specific multi-position stops. You must match the 32 mm bore, 35 mm and 20 mm strokes, PT ports, and the -S magnet option. The SCT is a tandem cylinder, not a direct single-stroke replacement for an SC series.
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