Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 50mm give 4 controllable stop positions across a 75mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 250 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S
The SCT63X25X50S is a double-acting multi-position cylinder that delivers four distinct rod positions from two strokes on a single axis: fully retracted (0 mm), 25 mm, 50 mm, and the total extended travel of 75 mm. By pressurising the 25 mm section, the 50 mm section, or both, you gain fixed intermediate stops without the complexity of two separate actuators. Each piston section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at 0.9 MPa, driven through a rigid 20 mm diameter rod.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for contactless position feedback. The cylinder body has a length A(SCT) of 249 mm and features a 28 mm adjustable air cushion at each end section to decelerate the load smoothly. Operating on filtered air from 0.15 to 1.0 MPa, the standard TPU seals suit ambient temperatures from -20 to +70 °C, with PT1/4 ports for pneumatic connections.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 50 mm |
| Total travel | 75 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) | 50 mm |
| P3 (both extended) | 75 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 SCT63X25X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT63X25X50S Is Used
Two-Way Part Diverting
Use the four discrete positions (0, 25, 50, 75 mm) to guide parts into two separate chutes from a single infeed conveyor, with a retracted home position and a mid-stroke staging stop.
Multi-Depth Pressing
Achieve two controlled pressing depths in one cycle by stopping the rod at the 25 mm and 75 mm positions, ideal for light assembly tasks where a component is seated in two stages.
Staged Clamping Fixture
Operate a clamp with a low-force 25 mm approach stroke followed by a full 75 mm high-force clamping stroke, using the built-in magnet for sensor confirmation at each step.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S the Right Cylinder?
Choose the SCT tandem cylinder when your process requires two or more fixed stopping points along a linear stroke and you want to avoid the alignment and sequencing overhead of two separate cylinders. For this 63 mm bore, the per-section push force of 1559 N at 0.5 MPa is a useful mid-range thrust; if you need a lighter, more compact unit, stepping down to the 50 mm bore provides 982 N per section, while moving up to the 80 mm bore raises the force to 2513 N per section at the same pressure.
A direct replacement must match the 63 mm bore, both the 25 mm and 50 mm section strokes, the PT port thread, and the -S magnet option for sensor compatibility. Because the longer 50 mm section stroke is relatively short, rod bending under side load is not a primary concern here, but always align the load axially to maximise seal and bearing life.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 50 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 SCT63X25X50S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (first section extended), 50 mm (second section extended), and 75 mm (both sections extended, total travel). You select the position by pressurising the appropriate combination of the two piston sections.
Yes, if your application needs fixed stops at 25 mm and 75 mm on the same rod axis. The SCT63X25X50S integrates both strokes into one tie-rod body, eliminating the need for two cylinders, two mounting brackets, and the extra plumbing. Ensure the replacement matches the 63 mm bore, 25 mm and 50 mm strokes, PT1/4 ports, and the -S magnet option if you use sensors.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.