Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X25
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X25 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 65mm and 25mm give 4 controllable stop positions across a 90mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 165 mm
- Stroke 225 mm
- Total travel90 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X25
The SCT50X65X25 is a tandem multi-position pneumatic cylinder that provides four distinct rod positions: 0 mm (fully retracted), 25 mm, 65 mm, and 90 mm total travel. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, making it suitable for sorting gates or two-depth pressing operations where intermediate stops must be mechanically fixed.
This tie-rod cylinder uses a 20 mm diameter rod with M16x1.5 threads and PT1/4 ports. Its adjustable air cushion at each end (21 mm length) decelerates the piston smoothly, while the 243 mm body length A(SCT) helps fit it into compact multi-stop stations.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X25 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X25 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 65 / 25 mm |
| Total travel | 90 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, 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) | 65 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 90 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X65X25
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×65 | 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 SCT50X65X25 Is Used
Two-Way Diverter Gate
The four positions (0, 25, 65, 90 mm) route packages to three different conveyor lanes by stopping the gate at distinct angles, all from a single compact actuator.
Multi-Depth Pressing
Achieves two different insertion depths (25 mm and 65 mm) plus full retraction and full extension (90 mm) for assembling components with stepped features.
Staged Part Feeding
Advances a workpiece in three controlled steps—a short 25 mm push, a longer 65 mm push, and a full 90 mm push—for sequential drilling or inspection stations.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X25 the Right Cylinder?
Select the SCT50X65X25 when a process needs four hard stops without the complexity of two separate cylinders and external brackets. The 25 mm and 65 mm positions are set by pressurising the second or first section individually, and the full 90 mm stroke engages both. If your load requires higher thrust, stepping up to the 63 mm bore provides 1559 N push per section at 0.5 MPa.
For a drop-in replacement, match the 50 mm bore, both strokes (65 mm and 25 mm), PT thread, and basic mounting. If the application has a long unsupported load, consider external guide rods, as the tandem configuration does not increase the rod's resistance to side forces.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 65 + 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 SCT50X65X25 FAQ
This cylinder provides four discrete mechanical stops: 0 mm (retracted), 25 mm (stroke 2 only), 65 mm (stroke 1 only), and 90 mm (both sections extended, stroke1+stroke2).
The SCT tandem unit shares a common piston rod and body, guaranteeing coaxial alignment of both strokes and reducing mounting space. It simplifies plumbing to three ports instead of four, but the force output remains 982 N per section—it does not double the thrust.
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