Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X250S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 250mm give 4 controllable stop positions across a 375mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 1125 mm
- Stroke 2250 mm
- Total travel375 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X250S
The SCT32X125X250S is a tandem multi-position cylinder that delivers four fixed rod positions from two independent piston sections on a common 12 mm rod. With strokes of 125 mm and 250 mm, the reachable stops are 0 mm (fully retracted), 125 mm, 250 mm, and 375 mm total travel, selected by pressurising one or both sections.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position feedback. Each actuated section generates 402 N of push force at 0.5 MPa, rising to 724 N at the maximum operating pressure of 0.9 MPa. The body length A(SCT) is 233 mm, and the pneumatic cushion is 21 mm long.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X250S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 125 / 250 mm |
| Total travel | 375 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) | 125 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 375 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 SCT32X125X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT32X125X250S Is Used
Four-Position Diverter Gate
Direct packages to four separate conveyor lanes by stopping the rod at 0, 125, 250, or 375 mm, with sensor confirmation at each stop via the built-in magnet.
Multi-Stop Glue Dispensing
Apply adhesive beads at three different heights on a workpiece by cycling the cylinder through the 125 mm and 250 mm stops, plus the fully retracted home position.
Staged Part Ejection
Eject parts from a die in two stages—a 125 mm push to clear the tool, followed by a 250 mm stroke to drop the part onto an outfeed chute.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X125X250S the Right Cylinder?
Choose the SCT32X125X250S when your process needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 32 mm bore is a compact solution for light sorting or diverting tasks; if you require more thrust per section, step up to the 40 mm bore, which provides 628 N of push force at 0.5 MPa.
For a direct replacement, match the 32 mm bore, both the 125 mm and 250 mm section strokes, the PT port thread, and the built-in magnet (-S suffix). Since the total extended travel reaches 375 mm, ensure the rod is guided externally if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 250 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 SCT32X125X250S FAQ
It provides four discrete rod positions: 0 mm (retracted), 125 mm (section one extended), 250 mm (section two extended), and 375 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, if your application requires the specific 125 mm and 250 mm stroke stops. The SCT32X125X250S integrates both strokes into one tandem body, saving space and eliminating the need to synchronise two separate actuators and their mounts.
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