Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 100mm give 4 controllable stop positions across a 125mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 125 mm
- Stroke 2100 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100S
The SCT50X25X100S is a tandem multi-position cylinder that provides four fixed rod positions: 0 mm (fully retracted), 25 mm, 100 mm, and a total extended travel of 125 mm. This is achieved by pressurizing two independent piston sections on a single common rod, each delivering a push force of 982 N at 0.5 MPa. The 20 mm diameter rod and 21 mm adjustable air cushion at each end ensure smooth deceleration across all stop points.
Equipped with a built-in magnet, this model accepts CMSG, DMSG, or EMSG sensors directly on the tie-rod barrel for non-contact position confirmation at any of the four stops. The body length A is 243 mm, and the PT1/4 ports make it a direct fit for standard pneumatic plumbing. It is a genuine AirTAC unit designed for repetitive multi-stop tasks where two separate cylinders would add complexity.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 25 / 100 mm |
| Total travel | 125 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, 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) | 25 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 125 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X25X100S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT50X25X100S Is Used
Two-Stage Part Transfer
Operates a pick-and-place arm with a short 25 mm vertical lift followed by a 100 mm horizontal slide, using sensors to confirm each discrete position before the next sequence step.
Diverter Gate Control
Positions a conveyor diverter gate at four angles: home (0 mm), low-angle divert (25 mm), high-angle divert (100 mm), and a maintenance bypass position (125 mm).
Multi-Depth Clamping
Applies two distinct clamping pressures at 25 mm and 100 mm stroke positions for a two-stage assembly fixture, with the 125 mm position used for part loading clearance.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100S the Right Cylinder?
Choose the SCT50X25X100S when your process needs four distinct linear positions without the bulk of two independent actuators. The 25 mm and 100 mm strokes give you a short precise advance and a longer secondary feed from a single assembly. If you require more force per section, step up to the 63 mm bore which provides 1559 N push at 0.5 MPa; for a lighter load, the 40 mm bore offers 628 N. This cylinder replaces another SCT50 with identical 25 mm and 100 mm strokes, PT ports, and the -S magnet option. Ensure the guided load is supported if the 125 mm total travel creates an overhung moment.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 100 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 SCT50X25X100S FAQ
This tandem cylinder has four discrete mechanical stops: 0 mm (fully retracted), 25 mm (first section extended), 100 mm (second section extended), and 125 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT50X25X100S will drift or drop if pressure is exhausted or a valve centers. To hold a load at any of the four positions without live pressure, you must add an external rod lock or a pilot-operated check valve.
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