Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X25S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X25S 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 Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 150 mm
- Stroke 225 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X25S
The SCT32X50X25S tandem cylinder delivers four fixed rod positions—0 mm, 25 mm, 50 mm, and 75 mm total travel—by pressurising its two piston sections independently or together. Each section generates 402 N of push force at 0.5 MPa (724 N at 0.9 MPa), driven through a 12 mm diameter rod with PT1/8 ports.
A built-in magnet is integrated into the piston, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The cylinder body length A(SCT) is 233 mm, and the 21 mm air cushion at each end provides adjustable deceleration for smooth multi-stop sequencing.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X25S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 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 | PT1/8 |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X50X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | 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 SCT32X50X25S Is Used
Three-Position Diverter Gate
Actuates a sorting gate to three distinct positions—home (0 mm), divert left (25 mm), and divert right (50 mm)—using the 75 mm full-extension position as a safety stop.
Multi-Depth Label Press
Applies labels at two different insertion depths on a single product line. The 25 mm and 50 mm stops provide shallow and deep press actions without mechanical changeover.
Staged Component Feed
Advances a workpiece carrier in three precise increments (25 mm, 50 mm, 75 mm) for a multi-step drilling or assembly fixture, with sensor confirmation from the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X50X25S the Right Cylinder?
This 4-position unit replaces complex setups that would otherwise require two separate cylinders and external hard stops to achieve three working positions. When the 402 N push force per section is insufficient, stepping up to the 40 mm bore SCT provides 628 N per section at the same pressure. For replacement, match the 32 mm bore, the exact 50 mm and 25 mm section strokes, PT port thread, and the -S magnet option; basic mounting means no additional brackets are included.
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 SCT32X50X25S FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), first section extended (25 mm), second section extended (50 mm), and both sections extended for the total travel of 75 mm.
Yes, if your application needs three distinct stopping points at 25 mm and 50 mm from home. The SCT replaces two separate 32 mm bore cylinders and external stops, simplifying mounting and plumbing while adding integrated magnetic position sensing.
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