Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X400X350S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X400X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 400mm and 350mm give 4 controllable stop positions across a 750mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 1400 mm
- Stroke 2350 mm
- Total travel750 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X400X350S
The SCT50X400X350S is a tandem multi-position cylinder that provides four distinct mechanical stops along a 750 mm total stroke. By pressurising the two 50 mm bore sections independently or together, the 20 mm diameter rod reaches precise positions at 0 mm, 350 mm, 400 mm, and the full 750 mm extension. Each piston section delivers 982 N of push force at 0.5 MPa, making it a robust solution for multi-step indexing tasks.
This model includes a built-in magnet, allowing easy attachment of CMSG, DMSG, or EMSG sensors directly to the tie-rod barrel for electronic end-of-stroke or intermediate position confirmation. The cylinder body has a 243 mm baseline length, and the adjustable air cushion on each section provides a 21 mm deceleration zone to manage inertial loads quietly at the four hard stops.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X400X350S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X400X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 400 / 350 mm |
| Total travel | 750 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) | 400 mm |
| P2 (section 2) | 350 mm |
| P3 (both extended) | 750 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 SCT50X400X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×400 | Stroke 1 (section 1) in mm. |
| ×350 | 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 SCT50X400X350S Is Used
Two-Stage Part Diverting
Uses the 350 mm and 400 mm stops to sort parts from a single infeed lane into two separate outfeed conveyors, with the full 750 mm stroke clearing the lane for a third destination.
Dual-Depth Press Feed
The 350 mm stroke performs a shallow forming operation, while the 400 mm stroke completes a deeper draw, both using the same tooling set with guaranteed repeatable stop positions.
Multi-Stop Glue Dispensing
A dispense head travels to 350 mm and 400 mm positions for two different bead patterns on a single workpiece, then retracts fully to 0 mm for a safe reloading position.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X400X350S the Right Cylinder?
Selecting the SCT50X400X350S replaces the complexity of two separate cylinders and external hard stops with a single, self-contained unit that guarantees the 350 mm, 400 mm, and 750 mm positions are fixed by design. If 982 N of push force per section is insufficient for the application load, stepping up to a 63 mm bore SCT model provides 1559 N of push from each piston at the same pressure. For a direct replacement, match the 50 mm bore, both the 400 mm and 350 mm strokes, the PT port thread, and the integrated magnet sensor option; this model uses a basic mount with no included brackets.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 400 + 350 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 SCT50X400X350S FAQ
This tandem cylinder provides four distinct mechanical stops. The rod extends to 350 mm, 400 mm, and the combined 750 mm total stroke, in addition to the fully retracted 0 mm home position.
Yes, the '-S' suffix in SCT50X400X350S indicates a factory-installed magnet ring on the piston, allowing standard AirTAC CMSG reed switches or DMSG/EMSG solid-state sensors to be clamped to the cylinder barrel for position feedback at any of the four stops.
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