Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X70S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X70S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 70mm give 4 controllable stop positions across a 150mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 180 mm
- Stroke 270 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X70S
The SCT63X80X70S delivers four fixed rod positions—0 mm, 80 mm, 70 mm, and the full 150 mm extension—by pressurising its two tandem piston sections independently or together. Each section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at 0.9 MPa, driven through a 20 mm diameter rod with PT1/4 ports.
A built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or mid-position detection. The 28 mm air cushion at each end decelerates the load smoothly, and the 249 mm body length A(SCT) keeps the assembly compact for multi-stop tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X70S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X70S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 80 / 70 mm |
| Total travel | 150 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) | 80 mm |
| P2 (section 2) | 70 mm |
| P3 (both extended) | 150 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 SCT63X80X70S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×70 | 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 SCT63X80X70S Is Used
Two-Way Diverter Gate
Use the 80 mm stroke to divert product to lane A and the 70 mm stroke to lane B, with full retraction closing the gate. The magnet confirms each position before the next cycle.
Staggered Part Ejection
Eject small parts at the 70 mm stop and larger ones at 150 mm total travel. The 20 mm rod handles the offset loading, and the sensor confirms the correct stroke for each part size.
Two-Depth Pressing Station
Advance to 70 mm for a pre-press dwell, then extend to 150 mm for final forming. The 2805 N thrust at 0.9 MPa provides ample force for light assembly or staking operations.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X70S the Right Cylinder?
Choose this 4-position cylinder when your process needs three distinct extension points without the complexity of two separate actuators and external hard stops. The unequal strokes (80 mm and 70 mm) give you a short intermediate position and a longer one, useful for staggered feeding or two-depth pressing. If you need more force, step up to the 80 mm bore SCT which provides 2513 N push per section at 0.5 MPa. For a direct replacement, match the 63 mm bore, both 80 mm and 70 mm strokes, PT thread, basic mounting, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 70 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 SCT63X80X70S FAQ
It provides four discrete stop positions: 0 mm (fully retracted), 80 mm (section one extended), 70 mm (section two extended), and 150 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 SCT63X80X70S will drift or drop if pressure is lost or the valve centres. To hold a load at an intermediate stop without live pressure, you must add an external rod lock or a pilot-operated check valve.
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