Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 150mm give 4 controllable stop positions across a 175mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 2150 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150S
The SCT63X25X150S is a tandem multi-position cylinder that provides four fixed rod positions: fully retracted (0 mm), 25 mm, 150 mm, and the combined total travel of 175 mm. Each piston section delivers a push force of 1559 N at 0.5 MPa, scaling to 2805 N at the maximum operating pressure of 0.9 MPa, driven through a 20 mm diameter piston rod.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing. The cylinder body has a length A of 249 mm and uses an adjustable pneumatic cushion of 28 mm to decelerate the load smoothly at each end of the combined stroke, making it a robust solution for sequenced, multi-stop linear tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 150 mm |
| Total travel | 175 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 28 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) | 25 mm |
| P2 (section 2) | 150 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X25X150S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×150 | 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 SCT63X25X150S Is Used
Two-Stage Part Ejection
Uses the 25 mm stroke to break a part free from a fixture, then the 150 mm stroke to fully eject it onto an outfeed conveyor, all with one compact actuator.
Multi-Stop Diverter Gate
Positions a diverter gate at four discrete angles to sort packages. The 0, 25, 150, and 175 mm rod positions correspond to four distinct lane assignments.
Sequential Clamping & Feeding
Advances a clamp 25 mm for low-force holding, then feeds the workpiece 150 mm into a machining zone, with sensor confirmation at each step via the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X150S the Right Cylinder?
Select this SCT when your process needs a single actuator to index a load to four distinct mechanical hard stops without the complexity of two separate cylinders and external brackets. The 25 mm and 150 mm stroke combination is ideal for a short initial advance followed by a longer secondary feed. If higher force is required, consider stepping up to the 80 mm bore, which provides 2513 N of push per section at 0.5 MPa. For a direct replacement, match the 63 mm bore, both the 25 mm and 150 mm strokes, PT port thread, basic mounting, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 150 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 SCT63X25X150S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 25 mm (first section extended), 150 mm (second section extended), and 175 mm (both sections extended for full travel).
Yes, it is designed to replace two individually mounted cylinders with a single, compact unit. Ensure the replacement matches the 63 mm bore, the 25 mm and 150 mm stroke requirements, PT ports, and the -S magnet option for sensor compatibility.
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