Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 55mm and 75mm give 4 controllable stop positions across a 130mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 155 mm
- Stroke 275 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X75S
The AirTAC SCT50X55X75 is a tandem multi-position cylinder engineered for applications requiring four distinct linear stops. With a 50 mm bore and unequal section strokes of 55 mm and 75 mm, the rod achieves precise positions at 0 mm (fully retracted), 55 mm, 75 mm, and a total travel of 130 mm when both sections are pressurized. Each piston section delivers 982 N of push force at 0.5 MPa, providing robust actuation for sorting or diverting tasks.
This model features a 20 mm diameter rod and integrated magnetic piston rings, denoted by the -S suffix, allowing direct mounting of CMSG or DMSG sensors for end-of-stroke or intermediate position feedback. The cylinder body has an A(SCT) length of 243 mm and uses PT1/4 ports. Its adjustable pneumatic cushioning, with a 21 mm cushion length, ensures smooth deceleration at each stop, making it a reliable genuine AirTAC solution for multi-stop linear motion.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 55 / 75 mm |
| Total travel | 130 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) | 75 mm |
| P3 (both extended) | 130 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 SCT50X55X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×55 | 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 SCT50X55X75S Is Used
Part Diverting
Uses the four distinct positions (0, 55, 75, 130 mm) to route components down three separate conveyor lanes from a single infeed point.
Multi-Depth Pressing
Provides two controlled pressing depths at 55 mm and 75 mm, plus a full-insertion stop at 130 mm, ideal for staged assembly or insertion processes.
Staged Clamping
Applies initial clamp force at the 55 mm position, a secondary higher-force clamp at 75 mm, and full release at 0 mm for complex workpiece holding.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X75S the Right Cylinder?
Select the SCT50X55X75 when your process needs four fixed stop positions without the complexity of servo controls or multiple single-stroke cylinders. It consolidates what would typically require two separate actuators and external hard stops into one compact, tie-rod assembly. If your force requirement is lower, consider stepping down to the SCT40 bore, which provides 628 N of push per section at 0.5 MPa. For a direct replacement, ensure the substitute matches the 50 mm bore, both the 55 mm and 75 mm strokes, PT port thread, and the -S magnet option for sensor compatibility. Given the 75 mm stroke section, standard guiding is sufficient for most axial loads, but always align the rod path to prevent side-load deflection.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 55 + 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 SCT50X55X75S FAQ
This tandem cylinder provides four discrete stop positions: 0 mm (fully retracted), 55 mm (first section extended), 75 mm (second section extended), and 130 mm (both sections extended for total travel).
Yes, if your sequence requires stops at 55 mm and 75 mm. The SCT integrates both strokes on a single rod line, saving space and eliminating the need to synchronize two separate actuators. Ensure the mounting style and port thread (PT) match your existing setup.
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