Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X125S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X125S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 125mm give 4 controllable stop positions across a 225mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1100 mm
- Stroke 2125 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X125S
The SCT40X100X125S is a double-acting multi-position cylinder that provides four fixed rod positions from two independent piston sections on a single rod line. The reachable stops are 0 mm (fully retracted), 100 mm, 125 mm, and the combined total travel of 225 mm, selected by pressurising one or both sections. Each section delivers 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa, driven by a 16 mm diameter rod.
This model includes a built-in magnet (suffix -S), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing. The cylinder uses PT1/4 ports, an M12x1.25 rod thread, and adjustable end cushioning with a 21 mm cushion length to decelerate the load smoothly. The body length A(SCT) is 235 mm plus the strokes, making it a compact choice for multi-stop sorting or diverting tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X125S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X125S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 100 / 125 mm |
| Total travel | 225 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) | 100 mm |
| P2 (section 2) | 125 mm |
| P3 (both extended) | 225 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 SCT40X100X125S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×125 | 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 SCT40X100X125S Is Used
Two-Stage Part Diverting
Uses the 100 mm and 125 mm stops to route parts to three distinct conveyor lanes from a single feed point, controlled by two solenoid valves.
Multi-Depth Press Insertion
Provides two controlled insertion depths (100 mm and 225 mm) for installing components at different levels in an assembly fixture, ensuring repeatable depth without a servo.
Sequential Gate Actuation
Operates a sliding gate with three positions: closed (0 mm), partial open (100 mm), and full open (225 mm) for metering bulk material flow.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X125S the Right Cylinder?
Choose the SCT tandem cylinder when your application needs two or three intermediate mechanical hard stops without the complexity of two separate cylinders and external brackets. For the SCT40 bore, each section pushes with 628 N at 0.5 MPa. If you require more force, stepping up to the SCT50 bore provides 982 N per section at the same pressure. For a lighter, more compact solution, the SCT32 bore delivers 402 N. This SCT40X100X125S is a direct replacement for another AirTAC SCT of identical bore, both strokes (100 mm and 125 mm), PT thread, and the -S magnet option; the mounting is basic, so verify your existing bracket footprint if you are retrofitting.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 125 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 SCT40X100X125S FAQ
It provides four discrete mechanical stop positions: 0 mm (fully retracted), 100 mm (section one extended), 125 mm (section two extended), and 225 mm (both sections extended, which is the total travel).
Yes, if your sequence requires fixed stops at 100 mm and 225 mm. The SCT integrates both strokes on one common rod, eliminating the need to align two separate cylinders and their mounting brackets. Ensure the per-section force of 628 N at 0.5 MPa meets your load requirements for each actuation step.
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