Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 55mm and 50mm give 4 controllable stop positions across a 105mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 155 mm
- Stroke 250 mm
- Total travel105 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X50S
The SCT50X55X50S creates four fixed rod positions—0 mm, 50 mm, 55 mm, and 105 mm total travel—by sequencing pressure to its two tandem piston sections. Each 50 mm bore section generates 982 N of push force at 0.5 MPa (1767 N at 0.9 MPa), driven through a 20 mm diameter piston rod with M16x1.5 male threads.
A built-in magnet is factory-installed, letting you clamp CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for non-contact position confirmation at any of the four stops. The cylinder body length A(SCT) is 243 mm, and both sections use a 21 mm adjustable air cushion to decelerate the load smoothly at each end of the stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 55 / 50 mm |
| Total travel | 105 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) | 55 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 105 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 SCT50X55X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×55 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT50X55X50S Is Used
4-Position Diverter Gate
Direct packages to four separate chutes by pressurising section one, section two, or both, achieving distinct gate angles without multiple actuators or complex linkages.
Multi-Depth Pressing
Apply two different pressing depths (50 mm and 55 mm) in a single cycle, then retract fully or extend to 105 mm for part ejection, all from one compact tandem cylinder.
Staged Assembly Stop
Index a component carrier to a pick position (50 mm), a placement position (55 mm), and a full-advance joining position (105 mm), with sensor feedback at every step via the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X50S the Right Cylinder?
Choose this 4-position tandem when a single actuator must index a load to two intermediate stops plus full retract and full extend—for instance, a diverter gate that needs closed, low-flow, high-flow, and fully open positions. If your load requires more thrust, step up to the 63 mm bore SCT63 series, which provides 1559 N push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both strokes (55 mm and 50 mm), PT port thread, basic mounting, and the -S magnet suffix; mounting accessories like FA front flange or LB foot mount can be added if the machine layout changes.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 55 + 50 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 SCT50X55X50S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (section two extended), 55 mm (section one extended), and 105 mm (both sections extended). Because the two strokes differ, you get four unique positions rather than three.
Yes, in many cases. One SCT50X55X50S with a built-in magnet replaces two individual 50 mm bore cylinders and their mounting hardware, reducing plumbing, sensor wiring, and overall envelope while delivering the same four-position functionality. Ensure both strokes, port thread, and magnet option match your existing setup.
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