Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X15
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X15 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 15mm give 4 controllable stop positions across a 45mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 130 mm
- Stroke 215 mm
- Total travel45 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X15
The SCT40X30X15 is a tandem multi-position cylinder that delivers four fixed rod positions from its unequal section strokes: 0 mm (fully retracted), 30 mm, 15 mm, and 45 mm (total travel). Each 40 mm bore section provides 628 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where two distinct extended stops are needed without complex controls.
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 235 mm body length rigid. It operates on filtered air from 0.15 to 1.0 MPa across a -20 to +70 °C range with its standard TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X15 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X15 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 30 / 15 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) | 30 mm |
| P2 (section 2) | 15 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 SCT40X30X15
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT40X30X15 Is Used
Two-Way Part Diverting
Use the 30 mm stroke to divert parts to a primary lane and the 15 mm stroke for a secondary reject lane, all from a single actuator with fixed, repeatable stops.
Dual-Depth Insertion
Press a component to a 15 mm pre-seating depth, then advance to the full 30 mm final depth by pressurising the second section, ensuring consistent assembly.
Staggered Part Feeding
Control a multi-stop gate on a conveyor with the rod extending to 15 mm for small parts and 30 mm for larger ones, synchronised by simple pneumatic valves.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X30X15 the Right Cylinder?
Choose the SCT when your process requires two different extended positions from one compact actuator, eliminating the need for two separate cylinders and their mounting hardware. The 30 mm and 15 mm strokes give you a short intermediate stop and a longer primary stop, ideal for two-depth insertion or a reject/accept gate. If you need higher force, the 50 mm bore SCT provides 982 N push per section at 0.5 MPa.
For a direct replacement, match the 40 mm bore, both 30 mm and 15 mm section strokes, PT port thread, and basic mounting. If a magnet is needed for sensor feedback, specify the -S suffix. Ensure the guided load is aligned with the rod axis to prevent side-loading on the 16 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 30 + 15 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 SCT40X30X15 FAQ
It provides 4 discrete mechanical stops because the two strokes are unequal. The rod positions are 0 mm (retracted), 30 mm (section 1 extended), 15 mm (section 2 extended), and 45 mm (both sections extended). It does not offer infinitely variable positioning.
Yes, if your application needs two fixed extended positions. The SCT40X30X15 combines two strokes in one body, saving space and reducing plumbing. Ensure the replacement matches the 40 mm bore, 30 mm and 15 mm strokes, PT ports, and basic mounting.
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