Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X35X15
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X35X15 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 35mm and 15mm give 4 controllable stop positions across a 50mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 135 mm
- Stroke 215 mm
- Total travel50 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X35X15
The SCT63X35X15 is a tandem multi-position pneumatic cylinder that provides four fixed rod positions: fully retracted (0 mm), 15 mm, 35 mm, and the total extended travel of 50 mm. Each 63 mm bore piston section generates 1559 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where two different intermediate stop points are required without external hard stops.
This tie-rod cylinder uses a 20 mm diameter rod with M16x1.5 threads and PT1/4 ports. The body length A(SCT) is 249 mm, and the integrated air cushion is 28 mm long, providing adjustable end-of-stroke deceleration for both sections. The standard TPU seals offer an operating temperature range of -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X35X15 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X35X15 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 35 / 15 mm |
| Total travel | 50 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) | 35 mm |
| P2 (section 2) | 15 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 (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 SCT63X35X15
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×35 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT63X35X15 Is Used
Two-Way Part Diverting
Actuates a diverter gate to three positions—retracted, mid-stroke (15 mm), and extended (35 mm)—to sort parts into two separate lanes from a single conveyor line.
Multi-Depth Labeling
Positions a tamp pad at two different heights (15 mm and 35 mm) to apply labels onto product surfaces at varying distances, using the 50 mm total travel for retraction.
Staged Clamping
Provides a light initial clamp at 15 mm stroke and a full-force clamp at 35 mm stroke for delicate assembly processes, with each stage powered by a dedicated piston section.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X35X15 the Right Cylinder?
Select the SCT63X35X15 when your application needs two distinct intermediate positions from a single compact unit, eliminating the complexity of mounting two separate cylinders back-to-back. If the 1559 N push force per section is insufficient, stepping up to an 80 mm bore provides 2513 N of push at the same 0.5 MPa pressure. For a direct replacement, match the 63 mm bore, the 35 mm and 15 mm section strokes, PT port thread, and basic mounting style exactly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 35 + 15 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 SCT63X35X15 FAQ
This model provides four discrete mechanical stops: 0 mm (fully retracted), 15 mm (stroke 2 only), 35 mm (stroke 1 only), and 50 mm (both strokes extended). The positions are fixed by the cylinder's internal structure and are not infinitely adjustable.
Yes, if your sequence requires fixed stops at 15 mm and 35 mm. The SCT integrates both strokes into a single tie-rod body, saving space and eliminating the need to synchronize two separate cylinders. Ensure the per-section force of 1559 N at 0.5 MPa meets your load requirements for each actuation step.
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