Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X80S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 80mm give 4 controllable stop positions across a 105mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 280 mm
- Total travel105 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X80S
The SCT63X25X80S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: 0 mm (fully retracted), 25 mm, 80 mm, and the combined total travel of 105 mm. By pressurising either piston section independently or both together, you gain precise, repeatable mechanical stops without complex servo controls. Each 63 mm bore section delivers 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa.
This model is equipped with a built-in magnet (suffix -S), allowing CMSG, DMSG, or EMSG solid-state sensors to mount directly on the tie-rod barrel for reliable end-of-stroke or intermediate position sensing. The 20 mm diameter piston rod and PT1/4 ports ensure robust, high-cycle performance. With a 28 mm adjustable air cushion and a body length A of 249 mm, it integrates smoothly into compact multi-stop feeding or sorting stations where space and repeatability are critical.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X80S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 80 mm |
| Total travel | 105 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) | 80 mm |
| P3 (both extended) | 105 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 SCT63X25X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT63X25X80S Is Used
Two-Depth Part Ejection
Use the 25 mm stroke to push a reject part into a first bin, and the 80 mm stroke to eject accepted parts further down the line. The 105 mm total travel clears the main conveyor path, providing a simple, air-powered sorting gate without multiple actuators.
Multi-Level Clamping
Clamp a workpiece at a light preliminary pressure at the 25 mm position for alignment, then advance to the 80 mm position for full machining force. The discrete stops ensure consistent setup every cycle, improving part quality in CNC or welding fixtures.
Dual-Stop Diverter Gate
Control a diverter paddle with three active positions: neutral (0 mm), divert left (25 mm), and divert right (105 mm). The integrated magnet sensors confirm the gate position, preventing collisions in high-speed packaging or material handling systems.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X80S the Right Cylinder?
Choose the SCT when your application requires two or more fixed, mechanical stop points on a single rod line, eliminating the complexity and cost of two separate cylinders with external bracketry. For this 4-position model, the 25 mm and 80 mm strokes create a versatile pattern ideal for two-depth pressing or part ejection. If your force requirement is lower, consider stepping down to the 50 mm bore (982 N push at 0.5 MPa); for higher thrust, the 80 mm bore provides 2513 N per section.
To replace this unit, match the 63 mm bore, both strokes (25 mm and 80 mm), PT thread, and the -S magnet option. The basic mounting configuration allows direct tie-rod mounting, but FA, FB, CA, CB, or LB brackets can be added if your machine requires flange, clevis, or foot mounting. Note that the 20 mm rod is robust, but for the 80 mm stroke section, ensure the load is guided if significant side forces are present to prevent rod bending and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 80 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 SCT63X25X80S FAQ
It provides four discrete mechanical stop positions: 0 mm (fully retracted), 25 mm (first section extended), 80 mm (second section extended), and 105 mm (both sections extended). The positions are fixed by the two stroke lengths, not infinitely variable.
The -S suffix adds a magnetic band on the piston, designed for AirTAC's CMSG (reed), DMSG, and EMSG (solid-state) sensors. These clamp directly onto the cylinder's tie-rod barrel. Standard proximity sensors will not detect the piston magnet reliably, so using the matched AirTAC sensor series is essential for consistent position feedback.
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 SCT63X25X80S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.