Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X15S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 15mm give 4 controllable stop positions across a 40mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 215 mm
- Total travel40 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X15S
The SCT40X25X15S is a double-acting multi-position cylinder that delivers four fixed rod positions from two independent piston sections on a common 16 mm rod. With strokes of 25 mm and 15 mm, the reachable stops are 0 mm (fully retracted), 25 mm, 15 mm, and the total combined travel of 40 mm, making it ideal for compact sorting or shuttling tasks where space is tight.
Each piston section generates 628 N of push force at 0.5 MPa, with a maximum thrust of 1130 N at 0.9 MPa. The built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The body length A is 235 mm, and the integrated air cushion is 21 mm long, providing smooth deceleration at each stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X15S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 15 mm |
| Total travel | 40 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) | 25 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 40 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 SCT40X25X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | 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 SCT40X25X15S Is Used
Two-Way Part Diverting
Uses the 15 mm and 25 mm stops to direct small components into separate chutes or conveyor lanes from a single feed point.
Multi-Level Pusher
Provides a short 15 mm push for pre-positioning and a longer 25 mm stroke for final insertion, controlling two depths with one cylinder.
Sensor-Gated Assembly
The integrated magnet enables precise position confirmation at all four stops, ensuring a pick-and-place sequence is completed correctly.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X15S the Right Cylinder?
Choose this 4-position tandem unit when a single actuator must serve two discrete intermediate stops without the complexity of two separate cylinders and external hard stops. The 40 mm bore provides a per-section push of 628 N at 0.5 MPa; if your load requires more force, stepping up to a 50 mm bore (SCT50) raises the per-section push to 982 N at the same pressure. For a direct replacement, match the 40 mm bore, both the 25 mm and 15 mm strokes, the PT port thread, the basic mounting configuration, and the integrated magnet (-S suffix).
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 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 SCT40X25X15S FAQ
This tandem cylinder provides four distinct mechanical stops: 0 mm (fully retracted), 25 mm (section 1 extended), 15 mm (section 2 extended), and 40 mm (both sections extended for total travel).
Yes, it can replace two 40 mm bore cylinders with 25 mm and 15 mm strokes, provided the application only needs the four discrete positions. You must match the PT ports and ensure the replacement carries the -S magnet if your current setup uses barrel-mounted sensors.
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