Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X70X10
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X70X10 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 10mm give 4 controllable stop positions across a 80mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 170 mm
- Stroke 210 mm
- Total travel80 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X70X10
The SCT63X70X10 is a tandem multi-position cylinder that provides four discrete rod stops: 0 mm (fully retracted), 70 mm, 10 mm, and 80 mm (total travel). Each 63 mm bore section generates a push force of 1559 N at 0.5 MPa, making it suitable for applications requiring two distinct extended working positions with a short intermediate step.
Built on a rugged tie-rod design with a 20 mm diameter rod and M16x1.5 rod thread, this cylinder includes a 28 mm adjustable air cushion on each section for smooth deceleration. The body length A is 249 mm, and the standard PT1/4 ports ensure straightforward pneumatic plumbing. Operating pressure ranges from 0.15 to 1.0 MPa with TPU seals rated for -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X70X10 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X70X10 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 70 / 10 mm |
| Total travel | 80 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) | 70 mm |
| P2 (section 2) | 10 mm |
| P3 (both extended) | 80 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 SCT63X70X10
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×10 | 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 SCT63X70X10 Is Used
Two-Depth Press Insertion
Advances a tool 70 mm to seat a component, then retracts slightly to a 10 mm position for a secondary forming operation before returning home, all with one cylinder.
Dual-Position Gate Diverter
Positions a diverter gate at a 10 mm bypass gap or a full 70 mm opening to route parts down two different conveyor lanes from a single chute.
Staged Clamping Fixture
Provides a 10 mm pre-clamp position for part location, then extends the full 70 mm to apply final clamping force, ensuring the workpiece is seated correctly before full pressure.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X70X10 the Right Cylinder?
Choose the SCT when your process needs two fixed, repeatable stop positions from a single actuator, eliminating the complexity of two separate cylinders and external hard stops. The 70 mm and 10 mm stroke combination is ideal for a long advance followed by a precise short positioning movement. 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 direct replacement, match the 63 mm bore, both the 70 mm and 10 mm strokes, PT port thread, and basic mounting configuration. The SCT uses standard tie-rod mounting accessories (FA, FB, CA, CB, LB) if a bracketed installation is required later.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 70 + 10 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 SCT63X70X10 FAQ
This model provides 4 discrete mechanical stop positions because the two strokes are different lengths. The rod can be positioned at 0 mm (fully retracted), 70 mm (section 1 extended), 10 mm (section 2 extended), and 80 mm (both sections extended for total travel).
Yes, in many cases it can replace a setup with two individual cylinders and external stops, provided the required positions match the 10 mm and 70 mm strokes. The replacement must have the same 63 mm bore, both stroke lengths, and PT port threads. The SCT simplifies mounting and eliminates the need to synchronize two separate actuators.
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