Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X25S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 25mm give 4 controllable stop positions across a 75mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 225 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X25S
The AirTAC SCT40X50X25S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops from two strokes on a single common rod. The reachable positions are 0 mm (fully retracted), 25 mm, 50 mm, and 75 mm (total travel), selected by pressurising the front section, rear section, or both simultaneously. With a 40 mm bore and a 16 mm diameter rod, each piston section generates 628 N of push force at 0.5 MPa, making it suitable for compact sorting or diverting tasks.
This model includes a built-in magnet (-S suffix), allowing standard CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The cylinder body has an A(SCT) length of 235 mm and uses adjustable pneumatic cushioning with a 21 mm cushion sleeve to manage end-of-stroke deceleration. It operates on filtered air from 0.15 to 1.0 MPa, with a maximum push of 1130 N per section at 0.9 MPa.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X25S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 25 mm |
| Total travel | 75 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) | 50 mm |
| P2 (section 2) | 25 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 (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 SCT40X50X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT40X50X25S Is Used
Multi-Stop Diverter Gate
Controls a conveyor diverter with four precise positions—retracted, low-angle, mid-angle, and full extension—to route packages to three separate lanes using a single actuator.
Two-Depth Press Operation
Provides two distinct pressing depths (25 mm and 50 mm) plus a full 75 mm retract for part loading, enabling a single press station to handle two different forming operations.
Sequential Part Feeding
Advances components in a fixture through two discrete steps (25 mm then 50 mm) for a two-stage drilling or staking process, with sensor confirmation at each position via the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X25S the Right Cylinder?
Select the SCT40 tandem cylinder when your application requires up to four fixed stopping points without the complexity of two separate cylinders and external hard stops. The 40 mm bore provides 628 N of push per section at standard plant pressure (0.5 MPa), which is a step up from the 32 mm bore's 402 N. If your load requires more force, stepping to a 50 mm bore raises the per-section push to 982 N. For replacement, match the 40 mm bore, both strokes (50 mm and 25 mm), the PT port thread, and the built-in magnet; this model uses a basic mount, so verify your mounting brackets separately.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 25 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 SCT40X50X25S FAQ
This tandem cylinder provides four discrete positions: 0 mm (fully retracted), 25 mm (rear section extended), 50 mm (front section extended), and 75 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, if your sequence requires a common rod to reach 0, 25, 50, and 75 mm. It replaces two cylinders and external bracketry with a single tandem body. Ensure the replacement matches the 40 mm bore, 50 mm and 25 mm strokes, PT ports, and the -S magnet option for sensor compatibility.
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 SCT40X50X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.