Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X5X150
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X5X150 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 5mm and 150mm give 4 controllable stop positions across a 155mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 15 mm
- Stroke 2150 mm
- Total travel155 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X5X150
The SCT40X5X150 tandem cylinder delivers four fixed rod positions from two independent piston sections on a common rod line. With strokes of 5 mm and 150 mm, the reachable stops are 0 mm (fully retracted), 5 mm, 150 mm, and the combined total travel of 155 mm. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where a very short initial advance is followed by a longer secondary stroke.
This double-acting cylinder uses a 16 mm diameter rod with M12x1.25 threads and PT1/4 ports. The adjustable air cushion at each end (21 mm length) decelerates the piston smoothly, and the tie-rod construction keeps the body length A(SCT) to 235 mm. Operating pressure spans 0.15–1.0 MPa with standard TPU seals rated for -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X5X150 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X5X150 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 5 / 150 mm |
| Total travel | 155 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) | 5 mm |
| P2 (section 2) | 150 mm |
| P3 (both extended) | 155 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 SCT40X5X150
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×5 | 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 SCT40X5X150 Is Used
Two-Stage Part Ejection
Uses the 5 mm stroke for a precise initial push to break a part free, then the 150 mm stroke to fully eject it onto a conveyor, preventing sudden impact damage.
Dual-Position Gate Control
Operates a diverter gate with a 5 mm cracking position to relieve pressure before swinging fully open to 150 mm, protecting the gate mechanism from shock loads.
Sequential Clamping Fixture
Provides a light 5 mm touch-point to locate a workpiece, followed by a 150 mm advance to engage a secondary clamp, ensuring alignment before full force is applied.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X5X150 the Right Cylinder?
An SCT tandem cylinder replaces setups that would otherwise need two separate cylinders and external stop hardware to achieve a two-stroke sequence. This 40 mm bore model suits light automation; if higher force is needed, stepping up to the 50 mm bore (SCT50) raises the per-section push to 982 N at 0.5 MPa. For a direct replacement, match bore, both strokes (5 mm and 150 mm), PT port thread, and the basic mounting configuration. Because the 150 mm section stroke is relatively short, standard guiding is usually sufficient, but ensure the rod is not subjected to high side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 5 + 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 SCT40X5X150 FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 5 mm (first section extended), 150 mm (second section extended), and 155 mm (both sections extended). It is not a servo cylinder and cannot stop at arbitrary intermediate points.
Yes, in applications requiring a two-step linear sequence with a shared rod axis. It eliminates the need for couplers and separate mounting brackets. Ensure the replacement matches the 40 mm bore, 5 mm and 150 mm strokes, PT1/4 ports, and basic mounting.
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