Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X125S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X125S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 125mm give 4 controllable stop positions across a 175mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 2125 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X125S
The SCT40X50X125S is a tandem multi-position cylinder that delivers four distinct rod positions—0 mm, 50 mm, 125 mm, and the combined 175 mm—from a single compact assembly. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa, giving you predictable pneumatic thrust for sequenced operations.
This genuine AirTAC unit features a 16 mm diameter rod, PT1/4 ports, and a built-in magnet strip along the tie-rod barrel. The magnet allows direct mounting of CMSG, DMSG, or EMSG sensors to confirm each discrete stop position without external brackets. The adjustable air cushion at each end (21 mm length) decelerates the load smoothly, and the body length A is 235 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X125S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X125S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 125 mm |
| Total travel | 175 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) | 50 mm |
| P2 (section 2) | 125 mm |
| P3 (both extended) | 175 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 SCT40X50X125S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | 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 SCT40X50X125S Is Used
Two-Stage Sorting Gate
Extend to 50 mm for a partial divert, then to 125 mm or full 175 mm to route packages to three separate lanes based on size or barcode data.
Multi-Depth Pressing
Use the 50 mm stop for a light pre-crush or location step, then drive to the 125 mm or full 175 mm position for the final forming stroke in a compact assembly press.
Sequential Part Feeding
Advance a workpiece 50 mm to a first machining station, then extend further to 125 mm or 175 mm to present it to a second tool, all with sensor-confirmed stops.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X125S the Right Cylinder?
Choose the SCT when your application needs two or more fixed stop points but lacks space for two separate cylinders and a coupler. This model's 50 mm and 125 mm stroke sections give you a short advance and a longer secondary feed in one device. If you need higher force, stepping up to the 50 mm bore provides 982 N push per section at 0.5 MPa. For a drop-in replacement, match the bore, both strokes (50 and 125), the PT port thread, the basic mounting, and the -S magnet option. The SCT is a tie-rod cylinder; it is not interchangeable with ISO 15552 profiles.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 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 SCT40X50X125S FAQ
This tandem cylinder provides four distinct, repeatable stop positions: fully retracted (0 mm), first section extended (50 mm), second section extended (125 mm), and both sections extended for the total travel (175 mm). The stops are fixed by the two stroke values.
Yes. The -S suffix in the model code indicates a built-in magnet ring on the piston, which allows AirTAC CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the cylinder barrel's tie-rod slots and signal when the piston reaches each discrete stop.
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