Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X100X25
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X100X25 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 25mm give 4 controllable stop positions across a 125mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 1100 mm
- Stroke 225 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X100X25
The SCT32X100X25 tandem cylinder provides four fixed rod positions—0 mm, 25 mm, 100 mm, and the combined 125 mm stroke—by pressurising its two piston sections independently. Each 32 mm bore section delivers 402 N of push force at 0.5 MPa, rising to 724 N at the maximum 0.9 MPa operating pressure, driven through a 12 mm diameter piston rod.
This double-acting multi-position actuator uses PT1/8 ports and an M10x1.25 rod thread, with an adjustable air cushion of 21 mm at each end to manage deceleration. The tie-rod body has a base length of 233 mm, making it a compact solution for tasks requiring a short intermediate stop at 25 mm before a longer 100 mm travel, such as two-stage part ejection or diverter gates.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X100X25 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X100X25 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 100 / 25 mm |
| Total travel | 125 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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) | 100 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 125 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X100X25
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT32X100X25 Is Used
Two-Way Part Sorting
Uses the 25 mm stop for a diverting gate and the 125 mm full extension to pass parts straight through on a conveyor line.
Two-Stage Ejection
A 25 mm pre-eject loosens a component from a nest, followed by the full 100 mm stroke to clear the tooling area completely.
Dual-Depth Label Application
Applies a label at the 25 mm position for shallow trays and extends to 100 mm for deeper boxes on the same packaging line.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X100X25 the Right Cylinder?
Choose the SCT32X100X25 when your sequence needs a short 25 mm positioning step followed by a 100 mm working stroke, avoiding the complexity of two separate cylinders and external hard stops. If the 402 N push force per section is marginal, stepping up to the 40 mm bore SCT40X100X25 provides 628 N per section at the same 0.5 MPa. For direct replacement, match the 32 mm bore, both the 100 mm and 25 mm strokes, PT port thread, and basic mounting; adding an -S suffix enables CMSG/DMSG sensor mounting for end-of-stroke confirmation.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 25 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 SCT32X100X25 FAQ
This tandem cylinder provides four discrete mechanical stops: fully retracted (0 mm), first section extended (25 mm), second section extended (100 mm), and both sections extended for the total travel of 125 mm. The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates both strokes onto a single common rod line, guaranteeing coaxial alignment between the 25 mm and 100 mm positions and reducing the overall envelope compared to two individually mounted cylinders with couplers. It also simplifies pneumatic plumbing to just two valve circuits for four positions.
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