Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X80
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X80 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 120mm and 80mm give 4 controllable stop positions across a 200mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1120 mm
- Stroke 280 mm
- Total travel200 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X80
The AirTAC SCT40X120X80 is a double-acting tandem cylinder engineered to deliver four distinct rod positions without external stops. By pressurising its two 40 mm bore sections independently or together, the rod stops precisely at 0 mm (retracted), 80 mm, 120 mm, and the full 200 mm total travel. Each section generates 628 N of push force at 0.5 MPa, scaling to 1130 N at 0.9 MPa, with a 16 mm diameter rod providing robust guidance.
This multi-position design integrates two strokes into one compact, tie-rod body with a 235 mm base length A(SCT). It features PT1/4 ports and an M12x1.25 rod thread, with a 21 mm adjustable air cushion in each section for smooth deceleration. The SCT40X120X80 is a genuine AirTAC solution for applications requiring three or four fixed mechanical stops from a single pneumatic unit.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X80 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X80 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 120 / 80 mm |
| Total travel | 200 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) | 120 mm |
| P2 (section 2) | 80 mm |
| P3 (both extended) | 200 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 SCT40X120X80
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×120 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT40X120X80 Is Used
Two-Depth Pressing
Achieve a partial press at 80 mm for pre-forming and a full press at 200 mm for final assembly, with a safe retracted home position at 0 mm.
4-Way Diverter Gate
Use the four discrete stops (0, 80, 120, 200 mm) to align a chute or gate with four different conveyor lanes for high-speed sorting.
Multi-Stop Clamping
Clamp workpieces of three different thicknesses by stopping at 80 mm, 120 mm, or the full 200 mm extension, all from a single actuator.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X80 the Right Cylinder?
Choose the SCT40X120X80 when a process needs four defined stopping points—such as a two-depth pressing operation or a diverting gate with a home, two active, and a full-extension position. It replaces two separate cylinders and external hard stops, reducing plumbing and alignment complexity. If higher force is needed, step up to the 50 mm bore SCT50X120X80, which provides 982 N of push per section at 0.5 MPa. For a direct replacement, match the 40 mm bore, both strokes (120 mm and 80 mm), PT port thread, and basic mounting. Note that with the 120 mm section stroke, ensure the load is guided if side forces are present to prevent rod bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 120 + 80 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 SCT40X120X80 FAQ
It provides 4 discrete mechanical stops. The rod positions are 0 mm (fully retracted), 80 mm (section 2 extended), 120 mm (section 1 extended), and 200 mm (both sections extended for total travel).
Yes, it is designed to do exactly that. The SCT40X120X80 integrates two strokes into one body, giving you four fixed positions without needing two actuators, mounting hardware, and external hard stops. Ensure the replacement matches the 40 mm bore, 120 mm and 80 mm strokes, and PT port thread.
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