Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X55S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X55S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 55mm and 55mm give 3 controllable stop positions across a 110mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 155 mm
- Stroke 255 mm
- Total travel110 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X55S
The SCT50X55X55S is a double-acting multi-position cylinder that delivers three repeatable rod positions: fully retracted, 55 mm, and 110 mm total travel. Each of its two 50 mm bore sections generates 982 N of push force at 0.5 MPa, making it a compact alternative to complex servo setups for fixed-stop applications.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 20 mm diameter piston rod and 21 mm adjustable air cushion at each end help manage kinetic energy, while the 243 mm body length A dimension simplifies machine layout planning.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X55S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X55S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 55 / 55 mm |
| Total travel | 110 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 55 mm |
| P2 (both extended) | 110 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 SCT50X55X55S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×55 | Stroke 1 (section 1) in mm. |
| ×55 | 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 SCT50X55X55S Is Used
Two-Position Sorting Gate
Use the 55 mm and 110 mm stops to divert packages onto two separate conveyor lanes from a single infeed, with sensors confirming gate arrival at each position.
Multi-Depth Pressing
Achieve two distinct pressing depths in a single cycle—a partial advance to 55 mm for a pre-form operation and full 110 mm travel for final compaction.
Staged Clamping Fixture
Apply a light clamp at the 55 mm position for part alignment, then drive to the full 110 mm position for high-force holding during machining, with magnetic sensor confirmation at each stage.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X55S the Right Cylinder?
Choose the SCT tandem cylinder when your process needs two or three fixed stop points without the cost of a servo axis. This 50 mm bore unit delivers a per-section push force of 982 N at 0.5 MPa; if your load requires more thrust, stepping up to the 63 mm bore provides 1559 N per section at the same pressure. For a direct replacement, match the 50 mm bore, both 55 mm strokes, PT port thread, basic mounting, and the -S magnet option to ensure sensor compatibility.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 55 + 55 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 SCT50X55X55S FAQ
Because both strokes are 55 mm, this cylinder provides 3 distinct mechanical stop positions: 0 mm (fully retracted), 55 mm (first section extended), and 110 mm (both sections extended). The positions are fixed by the internal piston strokes and are not infinitely variable.
Yes, the -S suffix denotes a built-in magnet along the piston, making this cylinder compatible with AirTAC CMSG, DMSG, and EMSG series reed and solid-state sensors. The sensors clamp directly onto the cylinder's tie-rod barrel to detect each discrete stop position.
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