Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X25
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X25 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 25mm give 4 controllable stop positions across a 75mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 150 mm
- Stroke 225 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X25
The SCT63X50X25 tandem cylinder delivers four distinct rod positions: 0 mm, 25 mm, 50 mm, and the full 75 mm combined travel. Each 63 mm bore section provides 1559 N of push force at 0.5 MPa, making it suitable for applications requiring multiple fixed stop points without complex controls.
Built with a 20 mm diameter rod and PT1/4 ports, this cylinder features a 28 mm adjustable air cushion for smooth deceleration. The body length A(SCT) is 249 mm, and the per-section thrust rises to 2805 N at the maximum operating pressure of 0.9 MPa.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X25 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X25 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 50 / 25 mm |
| Total travel | 75 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) | 50 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 75 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 SCT63X50X25
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT63X50X25 Is Used
Two-Stage Sorting Gate
Operates a diverter gate with a partial-open position at 25 mm and a full-open position at 75 mm for routing different product sizes on a conveyor.
Multi-Depth Pressing
Provides two distinct pressing depths in a assembly fixture, first a light touch at 25 mm stroke, then full insertion at 75 mm total travel.
Staged Clamping
Applies an initial low-force clamp at the 50 mm position, then a secondary high-force clamp at the full 75 mm extension, preventing part damage.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X25 the Right Cylinder?
Select the SCT63X50X25 when a pneumatic solution needs four repeatable stop positions from a single, compact unit. It replaces using two separate cylinders and external hard stops. For higher force requirements, consider stepping up to the 80 mm bore, which offers 2513 N of push per section at 0.5 MPa. A direct replacement must match the 63 mm bore, both 50 mm and 25 mm strokes, PT port thread, and basic mounting configuration.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 25 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 SCT63X50X25 FAQ
This model has 4 discrete stop positions: fully retracted (0 mm), 25 mm, 50 mm, and fully extended at 75 mm. The positions are achieved by pressurizing either one or both cylinder sections.
Each of the two piston sections provides 1559 N of push force and 1402 N of pull force when operated at 0.5 MPa air pressure. The forces do not add together for multi-position moves.
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Related AirTAC SCT Multi-Position Cylinders
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