Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X350S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 350mm give 4 controllable stop positions across a 400mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 2350 mm
- Total travel400 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X350S
The SCT40X50X350S is a tandem multi-position cylinder delivering four discrete stop points at 0, 50, 350, and 400 mm along its total travel. Each piston section provides 628 N of push force at 0.5 MPa, making it a compact alternative to two separate actuators for sequenced linear moves.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position feedback. The 16 mm diameter rod and 21 mm adjustable air cushion at each end ensure smooth deceleration, even with the 350 mm second stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X350S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 350 mm |
| Total travel | 400 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) | 350 mm |
| P3 (both extended) | 400 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 SCT40X50X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | 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 SCT40X50X350S Is Used
Two-Stage Sorting Gate
Uses the 50 mm stroke for a primary divert and the 350 mm stroke for a secondary reject lane, providing three distinct routing paths from one compact actuator.
Multi-Depth Pressing
Delivers a light contact at 50 mm extension and a full-depth press at 400 mm, ideal for assembly processes requiring a two-step insertion or forming sequence.
Sequential Part Feeding
Advances parts in two controlled steps: a short 50 mm push to separate a component from a stack, followed by a 350 mm stroke to deliver it to the next station.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X350S the Right Cylinder?
Choose the SCT when your application needs two fixed, repeatable stop positions beyond the home position without the complexity of two cylinders and a manifold. For higher thrust, consider stepping up to the 50 mm bore, which offers 982 N of push per section at the same 0.5 MPa pressure. This SCT40X50X350S is a direct replacement only for an identical AirTAC SCT with a 40 mm bore, 50 mm and 350 mm strokes, a built-in magnet, and PT ports. With a 350 mm section stroke, ensure the rod is externally guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 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 SCT40X50X350S FAQ
It provides four distinct positions: 0 mm (fully retracted), 50 mm, 350 mm, and 400 mm (fully extended). These are achieved by pressurizing either the first section, the second section, or both simultaneously.
Yes, it is a direct functional replacement for two separate 40 mm bore SC cylinders with 50 mm and 350 mm strokes, provided they were used for a two-step sequence. However, the SCT's force is not additive; each section independently provides 628 N of push at 0.5 MPa, just like a single SC cylinder.
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