Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X20
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X20 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 20mm give 4 controllable stop positions across a 50mm total travel, with a ร63mm bore, PT1/4 ports and adjustable end cushioning.
- Boreร63 mm
- Stroke 130 mm
- Stroke 220 mm
- Total travel50 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X20
The SCT63X30X20 is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions from two independent strokes: 0 mm (fully retracted), 30 mm, 20 mm, and the combined total travel of 50 mm. Each 63 mm bore section generates a push force of 1559 N at 0.5 MPa, providing robust thrust for short-stroke indexing and sorting tasks.
Built on a durable tie-rod construction with a 20 mm diameter piston rod and M16x1.5 rod thread, this cylinder uses PT1/4 ports and includes a 28 mm adjustable air cushion to decelerate the load smoothly at each end. The body length A(SCT) is 249 mm, making it a compact solution for machinery requiring multiple precise stop points without complex servo controls.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X20 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X20 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | ร63 mm |
| Stroke 1 / Stroke 2 | 30 / 20 mm |
| Total travel | 50 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16ร1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 โ 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 โ 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 32โ100; 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) | 20 mm |
| P3 (both extended) | 50 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 (ร63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | โ |
| 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 SCT63X30X20
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32โ100). |
| ร30 | Stroke 1 (section 1) in mm. |
| ร20 | 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 SCT63X30X20 Is Used
Two-Way Diverter Gate
Uses the 20 mm and 30 mm stops to direct parts into two separate chutes from a single infeed conveyor, with the 50 mm position providing a bypass lane.
Multi-Depth Press Insertion
Installs fasteners or bushings to two controlled depths (20 mm and 30 mm) in a single cycle, with the retracted and full-extension positions used for part loading and ejection.
Sequential Clamping Fixture
Applies a light 20 mm clamp stroke for delicate alignment, then a full 30 mm power stroke for high-force holding, all from one compact tandem actuator.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X30X20 the Right Cylinder?
Choose the SCT63X30X20 when your application needs four distinct mechanical stops in a compact stroke envelope, eliminating the cost and complexity of two separate cylinders with external hard stops. If higher force is required, stepping up to the 80 mm bore provides 2513 N of push per section at 0.5 MPa; for a lighter, more compact design, the 50 mm bore offers 982 N.
To ensure a direct drop-in replacement, match the 63 mm bore, both the 30 mm and 20 mm section strokes, PT port thread, and basic mounting configuration. If your machine layout requires pivoting motion, consider the same model with a rear clevis mount (CA or CB) to accommodate angular movement.
Multi-position checklist
- โ Need 4 repeatable stops?
- โ Section strokes 30 + 20 mm suit your layout?
- โ Required force at your working pressure
- โ Port/thread type (PT/NPT/G)
- โ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 โ 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 SCT63X30X20 FAQ
This 4-position cylinder provides discrete mechanical stops at 0 mm (fully retracted), 30 mm (first section extended), 20 mm (second section extended), and 50 mm (both sections extended for total travel). The stops are fixed by the two section strokes and are not infinitely adjustable.
No, like all standard pneumatic cylinders, the SCT63X30X20 will drift or drop if air pressure is lost or the control valve is centered. To securely hold a load at any of the four positions without live pressure, you must add an external rod lock, a mechanical brake, or pilot-operated check valves in the circuit.
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