Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X30
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 15mm and 30mm give 4 controllable stop positions across a 45mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 115 mm
- Stroke 230 mm
- Total travel45 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X30
The SCT40X15X30 tandem cylinder delivers four discrete rod positions—0, 15, 30, and 45 mm—from a single compact tie-rod body. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it a precise alternative to complex multi-actuator setups for short-travel indexing.
With a 16 mm diameter rod and PT1/4 ports, the unit integrates a 21 mm adjustable air cushion in each section to manage end-of-stroke deceleration. The total body length A(SCT) is 235 mm, keeping the footprint tight for machines where space is at a premium.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X30 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 15 / 30 mm |
| Total travel | 45 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) | 15 mm |
| P2 (section 2) | 30 mm |
| P3 (both extended) | 45 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 SCT40X15X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×15 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT40X15X30 Is Used
Two-Depth Part Insertion
Use the 15 mm and 30 mm stops to press components to two different depths in a single cycle, eliminating the need for a secondary press station.
3-Way Diverter Gate
Position a diverter blade at 0 mm (closed), 15 mm (lane A), or 45 mm (lane B) to sort small packages on a conveyor line with simple pneumatic control.
Multi-Stop Glue Dispensing
Index a dispensing nozzle to three precise positions above a workpiece for applying adhesive beads at different offsets, controlled entirely by the tandem cylinder's fixed strokes.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X30 the Right Cylinder?
Choose the SCT when an application needs up to four fixed mechanical stops without the cost and plumbing of two separate cylinders and external hard stops. For lighter positioning tasks, the 32 mm bore (402 N push at 0.5 MPa) may suffice; for heavier tooling, step up to the 50 mm bore (982 N push).
A direct replacement must match the 40 mm bore, both 15 mm and 30 mm strokes, PT port thread, and basic mounting style. If the load must be held at any of the four positions without sustained air pressure, an external rod lock or pilot-operated check valve is required—the air cushion does not act as a brake.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 15 + 30 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 SCT40X15X30 FAQ
The rod reaches four distinct positions: fully retracted (0 mm), first section extended (15 mm), second section extended (30 mm), and both sections extended for full travel (45 mm). These are fixed mechanical stops, not infinitely variable.
Yes, if the application requires the 15 mm and 30 mm strokes in a single rod line. The SCT provides the same per-section force (628 N push at 0.5 MPa) as a standard SC40 but in a single tandem body, simplifying mounting and reducing air plumbing.
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