Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X54X4S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X54X4S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 54mm and 4mm give 4 controllable stop positions across a 58mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 154 mm
- Stroke 24 mm
- Total travel58 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X54X4S
The SCT50X54X4S is a multi-position tandem cylinder that delivers four discrete rod stops: 0 mm, 4 mm, 54 mm, and the full 58 mm extension. This specific stroke pairing is ideal for applications needing a precise short advance followed by a longer positioning stroke, all from one compact tie-rod body.
Each 50 mm bore section provides 982 N of push force at 0.5 MPa, with the 20 mm diameter rod and PT1/4 ports handling the flow. The built-in magnet allows direct mounting of CMSG or DMSG sensors to confirm each of the four positions, while the 21 mm air cushion at each end decelerates the load smoothly.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X54X4S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X54X4S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 54 / 4 mm |
| Total travel | 58 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) | 54 mm |
| P2 (section 2) | 4 mm |
| P3 (both extended) | 58 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 SCT50X54X4S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×54 | Stroke 1 (section 1) in mm. |
| ×4 | 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 SCT50X54X4S Is Used
Two-Stage Precision Press
Uses the 4 mm stroke for a delicate initial contact or low-force seating, then the 54 mm stroke completes the full press cycle, with sensor confirmation at each stage.
Dual-Position Gate Diverter
Positions a diverter gate at a partially open 4 mm gap for one product lane, and a fully open 58 mm path for a larger item, controlled by pressurising the cylinder sections independently.
Multi-Stop Part Staging
Stages a workpiece at a 4 mm inspection height, a 54 mm transfer height, and the fully retracted 0 mm position, enabling a three-step quality check sequence from a single actuator.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X54X4S the Right Cylinder?
Choose the SCT50X54X4S when your process requires two distinct extension depths without the complexity of two separate cylinders and external hard stops. The 4 mm stroke section gives a fine, repeatable short step, while the 54 mm section handles the main travel. If your force requirement is lower, the SCT40 bore offers 628 N push per section at 0.5 MPa; for higher force, step up to the SCT63 with 1559 N push.
To replace an existing unit, match the 50 mm bore, both the 54 mm and 4 mm strokes, PT port thread, and the -S magnet option. This is a basic mount model, so ensure your mounting interface accepts a tie-rod cylinder without integral flanges or feet.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 54 + 4 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 SCT50X54X4S FAQ
This tandem cylinder provides four distinct rod positions: fully retracted (0 mm), first section extended (4 mm), second section extended (54 mm), and both sections extended for the total travel of 58 mm. The positions are fixed by the stroke lengths and are not infinitely adjustable.
No. Like all standard pneumatic cylinders, the SCT does not mechanically lock at its intermediate stops. If holding a load without live pressure is required, you must add an external rod brake or a pilot-operated check valve to the circuit.
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