Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X60X120S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X60X120S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 60mm and 120mm give 4 controllable stop positions across a 180mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 160 mm
- Stroke 2120 mm
- Total travel180 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X60X120S
The SCT63X60X120S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions from two independent piston sections on a single rod line. The reachable stops are 0 mm (fully retracted), 60 mm, 120 mm, and the combined total travel of 180 mm, selected by pressurising section one, section two, or both simultaneously. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, with a 20 mm rod and PT1/4 ports.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG solid-state and reed sensors to be clamped directly onto the tie-rod barrel for end-of-stroke or intermediate position sensing. The cylinder body uses a 28 mm air cushion for adjustable, controlled deceleration at each stop. Operating pressure spans 0.15 to 1.0 MPa, with a maximum push thrust of 2805 N per section at 0.9 MPa.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X60X120S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X60X120S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 60 / 120 mm |
| Total travel | 180 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, 28 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) | 60 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 180 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X60X120S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×60 | Stroke 1 (section 1) in mm. |
| ×120 | 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 SCT63X60X120S Is Used
Four-Position Diverter Gate
Operates a conveyor diverter with four distinct lane positions. The 0, 60, 120, and 180 mm stops route packages to separate chutes without needing a multi-axis servo system.
Multi-Depth Pressing Station
Provides three pressing depths plus a retracted home position for assembling components with different insertion forces. The 1559 N push force at 0.5 MPa handles consistent low-to-medium pressure forming tasks.
Staged Part Transfer
Shifts a workpiece through four sequential stations on an indexing fixture. The discrete mechanical stops ensure repeatable alignment at each position, verified by the integrated magnetic sensors.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X60X120S the Right Cylinder?
Select the SCT63X60X120S when your application requires four discrete mechanical stops without the complexity of servo control or the footprint of two separate cylinders with external hard stops. The 60 mm and 120 mm strokes create a compact, repeatable three-depth positioning system ideal for sorting or multi-level feeding. If higher force is needed, stepping up to the 80 mm bore provides 2513 N of push per section at 0.5 MPa; for a lighter, faster-moving load, the 50 mm bore offers 982 N.
For direct replacement, match the 63 mm bore, both 60 mm and 120 mm section strokes, PT port thread, basic mounting, and the -S magnet option. Ensure the replacement is another AirTAC SCT tandem cylinder, as this is a tie-rod design without ISO 15552 interchangeability. Note that when a section stroke exceeds 300 mm, side-load and rod bending should be evaluated; at 120 mm, the rod is well-supported for axial loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 60 + 120 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 SCT63X60X120S FAQ
This tandem cylinder provides four discrete mechanical stop positions: 0 mm (fully retracted), 60 mm (section one extended), 120 mm (section two extended), and 180 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely variable.
No, this cylinder does not have a mechanical lock or brake. If air pressure is exhausted or a directional valve is centered, the piston will drift or drop under load. To hold a position without live pressure, you must add an external rod brake, a pilot-operated check valve, or a mechanical locking device.
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