Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 15mm and 75mm give 4 controllable stop positions across a 90mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 115 mm
- Stroke 275 mm
- Total travel90 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X75S
The SCT40X15X75S is a double-acting tandem cylinder that delivers four fixed rod positions from two independent piston sections: 0 mm (fully retracted), 15 mm, 75 mm, and the combined total travel of 90 mm. Each 40 mm bore section generates a push force of 628 N at 0.5 MPa, making it suitable for light sorting or diverting tasks where multiple end-of-stroke locations are needed on one compact axis.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback at each stop. The 16 mm diameter rod and 21 mm adjustable air cushion at both ends help manage end-of-stroke impact, while the 235 mm body length A dimension aids machine layout planning.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 15 / 75 mm |
| Total travel | 90 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) | 75 mm |
| P3 (both extended) | 90 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 SCT40X15X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×15 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT40X15X75S Is Used
Two-Stage Part Ejection
Uses the 15 mm stroke for a short pre-eject and the 75 mm stroke for full part removal, providing a clean separation sequence.
Diverter Gate Actuation
Positions a gate at 0 mm (lane A), 15 mm (neutral), 75 mm (lane B), or 90 mm (lane C) for multi-lane conveyor sorting.
Multi-Depth Pressing
Delivers two distinct pressing depths (15 mm and 75 mm) plus a full-retract and full-extend position for flexible forming operations.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X75S the Right Cylinder?
Select the SCT40X15X75S when your process requires four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 15 mm and 75 mm strokes provide a short advance and a longer secondary positioning move. If higher force is needed, consider stepping up to the 50 mm bore SCT, which provides 982 N of push per section at 0.5 MPa. For direct replacement, match the 40 mm bore, the 15 mm and 75 mm stroke combination, PT port threads, and the -S magnet option. Note that the 15 mm stroke section is non-standard, making this a made-to-order configuration.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 15 + 75 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 SCT40X15X75S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 15 mm (first section extended), 75 mm (second section extended), and 90 mm (both sections extended). The stops are fixed by the cylinder's stroke lengths and are not infinitely adjustable.
No, like all standard pneumatic cylinders, the SCT40X15X75S will not hold its position if air pressure is lost or exhausted. The piston can drift or drop. If a load must be safely held at a stop without live pressure, an external rod lock or pilot-operated check valve is required.
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