Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 40mm give 3 controllable stop positions across a 80mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 240 mm
- Total travel80 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40
The SCT50X40X40 is a 50 mm bore multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), 40 mm, and the combined 80 mm total stroke. Each piston section generates 982 N of push force at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa, making it suitable for compact two-stop indexing tasks.
This tie-rod cylinder features a 20 mm diameter piston rod and PT1/4 ports with an M16x1.5 rod thread. The body length A(SCT) is 243 mm and it includes a 21 mm adjustable air cushion on each section to decelerate the load smoothly at both intermediate and end-of-travel positions.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 40 mm |
| Total travel | 80 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) | 40 mm |
| P2 (both extended) | 80 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 SCT50X40X40
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×40 | 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 SCT50X40X40 Is Used
Two-Way Diverter Gates
Use the three positions (0, 40, 80 mm) to direct parts into two separate lanes on a conveyor. The rod retracts for lane one, extends to 40 mm for lane two, and reaches 80 mm for a reject chute.
Two-Stage Part Stamping
Perform a light pre-form operation at the 40 mm intermediate stop before driving to the full 80 mm extension for final forming. The 982 N per-section force at 0.5 MPa handles medium-duty press tasks.
Multi-Level Assembly Fixtures
Index a workpiece pallet to two distinct working heights. The 20 mm rod and 21 mm cushion provide stable, repeatable stops for operators or pick-and-place units without over-travel.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40 the Right Cylinder?
Choose the SCT50X40X40 when a pneumatic circuit needs three fixed positions without the complexity of two independent cylinders and external hard stops. It simplifies plumbing and control logic for applications like two-stage part ejection or diverter gates where the intermediate 40 mm position is a process requirement. If your force needs are lower, stepping down to the 40 mm bore SCT40X40X40 provides 628 N push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both 40 mm section strokes, PT port thread, and basic mounting style.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 40 + 40 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 SCT50X40X40 FAQ
It provides 3 discrete mechanical stop positions because both piston sections have an equal 40 mm stroke. The rod positions are 0 mm (fully retracted), 40 mm (first section extended), and 80 mm (both sections extended).
The force is generated per actuated piston section. At 0.5 MPa, a single section provides 982 N pushing and 825 N pulling. At the maximum operating pressure of 0.9 MPa, the push force per section is 1767 N. The two sections do not combine force for multi-position moves.
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