Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 400mm and 70mm give 4 controllable stop positions across a 470mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1400 mm
- Stroke 270 mm
- Total travel470 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70
The SCT80X400X70 is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 70 mm, 400 mm, and the combined total travel of 470 mm. Each piston section generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty material handling tasks requiring two distinct extended stops.
Built on an 80 mm bore tie-rod platform, this cylinder uses a 25 mm diameter piston rod with PT3/8 ports and an M20x1.5 rod thread. The body length A(SCT) is 296 mm, and each end features a 28 mm adjustable air cushion to decelerate the load smoothly. The standard TPU seals and PT threads suit general industrial environments from -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 400 / 70 mm |
| Total travel | 470 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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) | 400 mm |
| P2 (section 2) | 70 mm |
| P3 (both extended) | 470 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×400 | 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 SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70 Is Used
Two-Stage Part Diverting
Actuates a diverter gate to a partial-open position at 70 mm for sorting small items, then extends fully to 470 mm to redirect larger or palletized goods onto a separate conveyor lane.
Sequential Clamping
Provides a low-force initial clamp at the 70 mm stroke to position a delicate workpiece, followed by a full-power 470 mm stroke to drive a secondary locking wedge or safety gate into place.
Multi-Depth Pressing
Used in a press station where the tool first advances 400 mm for a primary forming operation, then retracts to the 70 mm intermediate stop for a secondary coining or staking process without fully returning home.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70 the Right Cylinder?
Selecting the SCT80X400X70 eliminates the complexity of mounting and synchronizing two separate cylinders to achieve a two-stage extension. For applications needing a higher force at the same pressure, consider stepping up to the 100 mm bore SCT series, which provides 3927 N of push per section at 0.5 MPa. Conversely, if space is constrained and the load is lighter, the 63 mm bore variant delivers 1559 N per section.
A direct replacement must match the 80 mm bore, both the 400 mm and 70 mm stroke sections, PT port threads, and the basic mounting configuration. As the primary stroke is 400 mm, ensure the rod is adequately guided if significant side loads are present, as the long extension can amplify bending moments on the 25 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 400 + 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 SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 70 mm, 400 mm, and the total combined stroke of 470 mm. These positions are fixed by the two internal piston sections and are selected by pressurizing the appropriate air ports.
The SCT integrates both strokes into a single, compact tie-rod assembly, guaranteeing perfect axial alignment and eliminating the need for external brackets, couplers, and complex sequencing valves. This reduces installation time, saves space, and provides more reliable, repeatable positioning than two independently mounted cylinders.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X400X70
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.