Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X135S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X135S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 275mm and 135mm give 4 controllable stop positions across a 410mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1275 mm
- Stroke 2135 mm
- Total travel410 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X135S
The SCT63X275X135S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops: 0 mm, 135 mm, 275 mm, and the full combined travel of 410 mm. By pressurising either of its two 63 mm bore sections independently or together, you gain fixed intermediate positions without complex servo controls. Each piston section provides a push force of 1559 N at 0.5 MPa, rising to 2805 N at 0.9 MPa, driven through a 20 mm diameter piston rod.
This model includes a built-in magnet (-S suffix) along the barrel, enabling direct mounting of CMSG, DMSG, or EMSG solid-state and reed sensors for end-of-stroke or mid-position confirmation. The tie-rod construction houses an adjustable pneumatic cushion at both ends (28 mm cushion length) for smooth deceleration. With a body length of 249 mm plus strokes, it uses PT1/4 ports and an M16x1.5 rod thread, suiting standard AirTAC mounting accessories.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X135S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X135S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 275 / 135 mm |
| Total travel | 410 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) | 275 mm |
| P2 (section 2) | 135 mm |
| P3 (both extended) | 410 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 SCT63X275X135S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×275 | Stroke 1 (section 1) in mm. |
| ×135 | 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 SCT63X275X135S Is Used
Three-Way Diverter Gate
Use the four discrete positions (0, 135, 275, 410 mm) to direct product flow to three separate conveyor lanes from a single infeed, sequencing the gate blade precisely with pneumatic signals.
Two-Depth Press Operation
Achieve a partial pressing depth at 135 mm and a full depth at 275 mm or 410 mm in a single cycle. The fixed mechanical stops ensure repeatable depth control without needing a linear transducer.
Multi-Stop Part Feeding
Advance a pusher arm to 135 mm for a pre-stage position, then to 275 mm for the primary transfer, and finally to 410 mm for a reject or secondary operation, all controlled by two solenoid valves.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X275X135S the Right Cylinder?
Choose the SCT63 when you need two intermediate positions in a compact, purely pneumatic package—it eliminates the cost and complexity of two separate cylinders with external stops. If your load requires higher thrust, consider stepping up to the 80 mm bore SCT80 (2513 N push per section at 0.5 MPa). For a lighter, faster-moving assembly, the 50 mm bore SCT50 (982 N push at 0.5 MPa) may be a better fit. Always match the replacement exactly: a 63 mm bore SCT with both 275 mm and 135 mm strokes, PT thread, and the -S magnet option. With a 275 mm extension on the first section, ensure the rod is adequately guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 275 + 135 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 SCT63X275X135S FAQ
This tandem cylinder provides four distinct rod positions: fully retracted (0 mm), the second section extended (135 mm), the first section extended (275 mm), and both sections extended for the total travel (410 mm). The positions are fixed by the two stroke lengths and are selected by applying air pressure to the corresponding piston sections.
Yes, if your application requires fixed stops at 135 mm and 275 mm. The SCT integrates both strokes on a single common rod, which saves space and simplifies mounting compared to aligning two individual cylinders. Ensure the replacement matches the 63 mm bore, 275 mm and 135 mm strokes, PT1/4 ports, and the -S magnet if sensor feedback is needed.
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 SCT63X275X135S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.