Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X70X70
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X70X70 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 70mm give 3 controllable stop positions across a 140mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 170 mm
- Stroke 270 mm
- Total travel140 mm
- Positions3 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X70X70
The SCT32X70X70 is a double-acting multi-position tandem cylinder that delivers three distinct, repeatable rod positions: fully retracted (0 mm), 70 mm, and the total extended travel of 140 mm. Each piston section generates a push force of 402 N at 0.5 MPa, making it a compact solution for light-duty sorting or diverting tasks.
Built on a 32 mm bore with a 12 mm diameter rod and PT1/8 ports, this tie-rod cylinder uses an adjustable air cushion (21 mm length) for smooth end-of-stroke deceleration. Its body length A(SCT) is 233 mm, providing a rigid structure for consistent multi-stop positioning.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X70X70 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X70X70 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 70 / 70 mm |
| Total travel | 140 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 70 mm |
| P2 (both extended) | 140 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X70X70
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×70 | 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 SCT32X70X70 Is Used
Two-Way Part Diverting
Actuates a gate to two distinct open positions (70 mm and 140 mm), routing small parts down separate chutes on a packaging line.
Two-Depth Pushing
Pushes components to a 70 mm pre-insertion depth, then a final 140 mm seating depth, ensuring precise assembly without over-travel.
Multi-Stop Feeding
Controls a feed mechanism with a 70 mm advance and a 140 mm full-extension stroke for indexing materials in a light-duty process.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X70X70 the Right Cylinder?
Choose the SCT32X70X70 when your application requires two fixed extension points from a single compact unit, eliminating the complexity of mounting two separate cylinders with external hard stops. If higher force is needed, stepping up to the 40 mm bore SCT provides 628 N of push per section at the same 0.5 MPa pressure.
For a direct replacement, match an AirTAC SCT with a 32 mm bore, both strokes set to 70 mm, PT port threads, and basic mounting. Ensure the magnet option (-S) is matched if sensors are used for end-of-stroke confirmation.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 70 + 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 SCT32X70X70 FAQ
It provides 3 discrete mechanical stop positions because both piston sections have an equal 70 mm stroke. The rod positions are 0 mm (fully retracted), 70 mm, and 140 mm (full extension).
Each of the two piston sections in the 32 mm bore generates a theoretical push force of 402 N at 0.5 MPa and a pull force of 345 N. The force from one section does not add to the other for multi-position moves.
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