Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 175mm give 4 controllable stop positions across a 255mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 2175 mm
- Total travel255 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X175S
The SCT40X80X175S is a tandem multi-position cylinder that delivers four fixed rod positions without external stops. By pressurising one or both of its 80 mm and 175 mm stroke sections, the rod locates precisely at 0 mm, 80 mm, 175 mm, or the full 255 mm total travel. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where multiple endpoints are needed.
A built-in magnet is fitted as standard on this -S variant, allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for end-of-stroke or intermediate position confirmation. The 16 mm diameter rod resists side-load deflection, and the 21 mm adjustable air cushion at each end decelerates the piston smoothly. The body length A is 235 mm, and the PT1/4 ports accept standard pneumatic fittings.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 175 mm |
| Total travel | 255 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) | 80 mm |
| P2 (section 2) | 175 mm |
| P3 (both extended) | 255 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 SCT40X80X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT40X80X175S Is Used
Three-Way Part Sorting
Use the four discrete stops to divert parts to three separate conveyor lanes. The rod extends to 80 mm for lane one, 175 mm for lane two, and 255 mm for lane three, all from a single compact actuator.
Multi-Depth Pressing
Control a press tool to two different insertion depths in one cycle. The first section advances the tool to a 175 mm pre-set depth, and the second section adds 80 mm for a final 255 mm bottoming operation.
Sequential Gate Control
Operate a multi-gate chute where the rod at 0 mm closes all gates, at 80 mm opens gate one, at 175 mm opens gate two, and at 255 mm opens a third bypass gate for mixed material handling.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X175S the Right Cylinder?
Choose the SCT when a single actuator must reach more than two positions without the complexity of two separate cylinders and a mounting bracket. This 40 mm bore model provides 628 N of push per section at 0.5 MPa; if the load requires more force, stepping up to the 50 mm bore SCT50 series delivers 982 N per section at the same pressure. For a direct replacement, match the 40 mm bore, both 80 mm and 175 mm strokes, the PT port thread, and the built-in magnet (-S suffix). Since the combined stroke reaches 255 mm, ensure the rod is guided if the load applies significant side force to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 175 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 SCT40X80X175S FAQ
It provides four distinct mechanical stop positions. The rod can be positioned at 0 mm (fully retracted), 80 mm (first section extended), 175 mm (second section extended), and 255 mm (both sections extended, giving the total stroke).
Yes, in applications requiring two fixed intermediate positions. The SCT40X80X175S integrates both strokes on a common rod line, saving mounting space and eliminating the need to synchronise two separate actuators. Ensure the replacement matches the 40 mm bore, 80 mm and 175 mm strokes, and the -S magnet option.
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