Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 75mm give 4 controllable stop positions across a 155mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 180 mm
- Stroke 275 mm
- Total travel155 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X75S
The SCT50X80X75S is a tandem multi-position cylinder that delivers four fixed rod positions from a single compact unit: fully retracted (0 mm), first section extended (80 mm), second section extended (75 mm), and both sections extended for the full 155 mm total travel. With a 50 mm bore and 20 mm rod, each piston section generates 982 N of push force at 0.5 MPa, making it a robust solution for sequenced pneumatic workflows.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state and reed sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke detection at each discrete stop. The cylinder body has an A(SCT) length of 243 mm and features an adjustable air cushion of 21 mm on both ends, providing smooth deceleration even under the higher thrust of 1767 N available at 0.9 MPa operating pressure.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 80 / 75 mm |
| Total travel | 155 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) | 80 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 155 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 SCT50X80X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT50X80X75S Is Used
Two-Way Diverter Gate
Use the four positions (0, 80, 75, 155 mm) to guide packages down three distinct conveyor lanes, with the built-in magnet confirming arrival at each discrete stop.
Multi-Depth Pressing
Achieve two different insertion depths in an assembly fixture by pressurizing the 80 mm and 75 mm sections independently, then retract fully for part ejection.
Sequential Clamping
Apply a low clamp force at the 75 mm position for delicate alignment, then advance to the full 155 mm stroke for high-force holding, with sensor feedback at every stage.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X75S the Right Cylinder?
Choose the SCT tandem cylinder when your application requires up to four defined mechanical stops without the complexity of servo control or the alignment issues of two separate cylinders. The 80 mm and 75 mm stroke combination is ideal for two-step sorting or diverting tasks where the positions are slightly asymmetric. If you need higher force, stepping up to the 63 mm bore provides 1559 N of push per section at 0.5 MPa, while a step down to the 40 mm bore reduces push force to 628 N for lighter payloads.
For a direct replacement, match the 50 mm bore, the exact 80 mm and 75 mm strokes, PT port thread, basic mounting, and the -S magnet option. Note that the total extended length creates a significant moment arm; for strokes over 75 mm, ensure the load is externally guided to prevent rod bending and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 75 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 SCT50X80X75S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 80 mm (first section extended), 75 mm (second section extended), and 155 mm (both sections extended for total travel). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, the SCT50X80X75S replaces two individually mounted cylinders with a single, pre-aligned unit, saving space and eliminating rod synchronization issues. Ensure the replacement matches the 50 mm bore, the two specific strokes (80 mm and 75 mm), PT ports, basic mounting, and the -S magnet option for sensor compatibility.
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