Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X70
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X70 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 70mm give 4 controllable stop positions across a 100mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 130 mm
- Stroke 270 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X70
The SCT63X30X70 tandem cylinder delivers four fixed rod positions—0 mm, 30 mm, 70 mm, and the full combined travel of 100 mm—by pressurising one or both piston sections. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa, making it a robust solution for sequenced linear moves.
Built on a tie-rod design with a 20 mm diameter rod and M16x1.5 rod thread, this double-acting unit includes a 28 mm adjustable air cushion in each section for smooth end-of-stroke deceleration. The body length A(SCT) is 249 mm, and the standard PT1/4 ports ensure straightforward pneumatic integration in multi-stop feeding or sorting tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X70 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X70 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 30 / 70 mm |
| Total travel | 100 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) | 30 mm |
| P2 (section 2) | 70 mm |
| P3 (both extended) | 100 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 SCT63X30X70
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×70 | 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 SCT63X30X70 Is Used
Two-Way Diverter Gate
Use the four discrete stops to direct product flow to three separate lanes in a conveyor system, with the 100 mm total stroke providing ample travel for wide chutes.
Multi-Depth Pressing
Achieve two distinct pressing depths in a single cycle by advancing to the 30 mm position for a light pre-form and the 100 mm position for final compaction.
Staged Part Ejection
Eject parts in a controlled sequence: a short 30 mm push to break the part free, followed by a full 100 mm extension to clear the tooling area completely.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X70 the Right Cylinder?
Choose the SCT63X30X70 when your process requires a compact actuator that can reliably index between four fixed positions without the complexity of two separate cylinders and external hard stops. If the 1559 N per-section push at 0.5 MPa is more than needed, stepping down to a 50 mm bore reduces the force to 982 N per section at the same pressure. For a direct replacement, match the 63 mm bore, the exact 30 mm and 70 mm section strokes, PT port thread, and basic mounting style.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 30 + 70 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 SCT63X30X70 FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), first section extended (30 mm), second section extended (70 mm), and both sections extended for the total travel (100 mm).
The SCT integrates two piston sections on a single common rod, guaranteeing fixed, repeatable intermediate stops without the alignment drift, extra mounting space, and complex valving required by two independent cylinders with external stops.
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