Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X80S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 80mm give 4 controllable stop positions across a 105mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 280 mm
- Total travel105 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X80S
The SCT40X25X80S is a double-acting multi-position tandem cylinder that delivers four discrete rod positions: 0 mm (fully retracted), 25 mm, 80 mm, and 105 mm total travel. Each piston section generates a push force of 628 N at 0.5 MPa, providing robust actuation for light sorting and diverting tasks.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors for reliable end-of-stroke or mid-position detection. The 16 mm diameter rod and 21 mm air cushion in each end cap ensure smooth deceleration, while the tie-rod construction body has a base length of 235 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X80S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 80 mm |
| Total travel | 105 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) | 80 mm |
| P3 (both extended) | 105 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 SCT40X25X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT40X25X80S Is Used
Two-Stage Part Diverting
Extend to 25 mm for a low-force nudge or 80 mm for a full divert, guiding parts to separate lanes on a conveyor.
Multi-Level Inspection Stop
Position a probe at 0, 25, 80, or 105 mm to check features at different heights on a component without changing tooling.
Sequential Clamping
Apply initial contact pressure at the 25 mm stroke, then full clamping force at the 105 mm total travel position.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X80S the Right Cylinder?
Choose the SCT when your application needs two or three intermediate stop points without the complexity of servo controls. This 40 mm bore model suits moderate loads; if you need higher force, stepping up to the 50 mm bore provides 982 N of push per section. For a drop-in replacement, match the bore, both strokes (25 mm and 80 mm), the PT port thread, and the integrated magnet (-S suffix).
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 80 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 SCT40X25X80S FAQ
This tandem cylinder provides four distinct rod positions: 0 mm (fully retracted), 25 mm (first section extended), 80 mm (second section extended), and 105 mm (both sections extended).
Yes, if you need the specific 25 mm and 80 mm stroke positions. The SCT integrates both strokes on a single rod line, saving space and simplifying plumbing compared to two individual cylinders with external stops.
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