Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X300X150S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X300X150S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 300mm and 150mm give 4 controllable stop positions across a 450mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1300 mm
- Stroke 2150 mm
- Total travel450 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X300X150S
The SCT40X300X150S tandem cylinder delivers four fixed rod positions—0 mm, 150 mm, 300 mm, and 450 mm—by combining two piston sections on a single 16 mm diameter rod line. Each section generates approximately 628 N of push force at 0.5 MPa, making this unit a compact alternative to complex servo setups for discrete multi-stop tasks.
A built-in magnet is integrated into the piston, allowing CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The cylinder body has an A(SCT) dimension of 235 mm plus stroke lengths, and each end features a 21 mm adjustable air cushion to decelerate the load smoothly at every stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X300X150S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X300X150S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 300 / 150 mm |
| Total travel | 450 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) | 300 mm |
| P2 (section 2) | 150 mm |
| P3 (both extended) | 450 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 SCT40X300X150S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×300 | Stroke 1 (section 1) in mm. |
| ×150 | 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 SCT40X300X150S Is Used
Three-Way Part Diverting
Use the four discrete positions to direct parts from a single infeed lane into three separate outfeed lanes on a conveyor system, eliminating the need for multiple actuators.
Multi-Depth Press Insertion
Control a press head to stop at 150 mm, 300 mm, and 450 mm depths for installing components at different levels in an assembly, ensuring consistent insertion force at each stage.
Staged Clamping Fixture
Operate a single clamp that moves to three distinct opening gaps to accommodate different workpiece thicknesses, simplifying fixture design and reducing changeover time.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X300X150S the Right Cylinder?
Choose the SCT when your application requires up to four repeatable mechanical stops without the cost of a servo-driven actuator. The 300 mm section stroke is substantial; ensure the load is externally guided to prevent excessive side-loading and rod bending, especially when extending to the full 450 mm total travel. For higher thrust, stepping up to the 50 mm bore provides about 982 N of push per section at the same 0.5 MPa pressure.
When replacing an existing unit, match the 40 mm bore, both strokes (300 mm and 150 mm), the PT port thread, and the built-in magnet (-S suffix). This basic mount model ships without brackets, so you can reuse your existing FA, FB, CA, CB, or LB mounting hardware from the AirTAC SCT accessory set.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 300 + 150 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 SCT40X300X150S FAQ
This tandem cylinder provides four discrete mechanical stops. The rod positions are fully retracted (0 mm), extended to the first section stroke (150 mm), extended to the second section stroke (300 mm), and fully extended using both sections (450 mm).
Yes, it is designed to do exactly that in many cases. One SCT40X300X150S can replace two separate 40 mm bore SC cylinders with 150 mm and 300 mm strokes, reducing the number of valves, fittings, and mounting space required. Ensure the replacement matches the PT ports and the -S magnet option if you are using sensors.
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