Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X125X200S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X125X200S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 200mm give 4 controllable stop positions across a 325mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1125 mm
- Stroke 2200 mm
- Total travel325 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X125X200S
The SCT40X125X200S tandem cylinder delivers four discrete rod positions—0 mm, 125 mm, 200 mm, and the full 325 mm extension—by independently pressurising its two 40 mm bore sections. Each section generates 628 N of push force at 0.5 MPa, scaling to 1130 N at 0.9 MPa, driven through a rigid 16 mm diameter piston rod.
A built-in magnet (denoted by the -S suffix) allows CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position feedback. The cylinder body has a base length of 235 mm and uses adjustable pneumatic cushioning with a 21 mm cushion length to manage end-of-stroke deceleration, making it a robust choice for multi-stop material handling tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X125X200S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X125X200S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 125 / 200 mm |
| Total travel | 325 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) | 125 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 325 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 SCT40X125X200S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT40X125X200S Is Used
Dual-Stop Diverter Gate
Positions a package diverter arm at a home position, a first sort lane at 125 mm, a second sort lane at 200 mm, or a full bypass at 325 mm, all from one compact actuator.
Two-Depth Pressing Station
Executes a shallow pre-press at the 125 mm stop and a final form press at the 200 mm stop before fully retracting, simplifying tooling for multi-stage forming.
Multi-Stop Part Feeding
Advances components on a linear feeder to two distinct pick points, using the sensor magnet to confirm arrival at each 125 mm and 200 mm position before a robot collects the part.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X125X200S the Right Cylinder?
Choose this 4-position SCT configuration when a single actuator must stop a load at two intermediate points without the complexity of two separate cylinders and external hard stops. If a higher force per section is needed, stepping up to the 50 mm bore SCT50 provides 982 N of push at 0.5 MPa. For a like-for-like replacement, match the 40 mm bore, both the 125 mm and 200 mm section strokes, the PT port thread, and the integrated magnet (-S). With a total stroke of 325 mm, ensure the load is guided or supported if there is a significant side load to prevent rod bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 200 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 SCT40X125X200S FAQ
It provides four distinct mechanical stop positions: fully retracted (0 mm), the first section extended (125 mm), the second section extended (200 mm), and both sections extended for the total travel (325 mm).
Yes, it is designed for exactly that purpose. A single SCT40X125X200S with a built-in magnet replaces the need for two separate 40 mm bore SC cylinders and their mounts, reducing plumbing, sensor wiring, and overall machine footprint while providing the same push force per actuated section.
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