Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 75mm give 4 controllable stop positions across a 125mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 275 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X75
The SCT40X50X75 is a tandem double-acting cylinder that delivers four fixed rod positions from two independent piston sections on a common 16 mm rod. Its reachable stops are 0 mm (fully retracted), 50 mm, 75 mm, and the combined total travel of 125 mm, selected by pressurising section one, section two, or both.
Each 40 mm bore section generates 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa. With a 21 mm adjustable air cushion and a body length A of 235 mm, this tie-rod cylinder suits compact multi-stop tasks where a single actuator replaces two separate cylinders.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 75 mm |
| Total travel | 125 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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) | 50 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 125 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT40X50X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | 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 SCT40X50X75 Is Used
Two-Position Diverter Gate
Use the 50 mm and 125 mm extended positions to route packages or parts down two separate conveyor lanes from a single infeed point.
Multi-Depth Pressing
Achieve a 50 mm pre-press and a 75 mm final form depth in a single cycle by sequencing pressure to the two cylinder sections.
Staged Part Feeding
Advance a workpiece 50 mm for an inspection step, then extend to the full 125 mm to present it to the next machining station.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X75 the Right Cylinder?
Choose the SCT when an application needs up to four discrete mechanical stops without the complexity of two independent cylinders and external hard stops. For this 40 mm bore, each section pushes with 628 N at 0.5 MPa; if higher force is required, stepping up to the 50 mm bore (SCT50 series) provides 982 N per section at the same pressure. A direct replacement must match the 40 mm bore, both the 50 mm and 75 mm strokes, PT port thread, and basic mounting style.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 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 SCT40X50X75 FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (first section extended), 75 mm (second section extended), and 125 mm (both sections extended).
Yes, in applications requiring fixed intermediate stops. A replacement SCT must match the 40 mm bore, 50 mm and 75 mm strokes, PT ports, and basic mounting. Note that the force output is per single piston section, not a combined value.
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