Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X12
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X12 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 12mm give 4 controllable stop positions across a 82mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 170 mm
- Stroke 212 mm
- Total travel82 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X12
The AirTAC SCT80X70X12 is a tie-rod multi-position cylinder that provides four fixed rod positions by combining two independent strokes on a single axis. With a 70 mm primary stroke and a 12 mm secondary stroke, the rod can be precisely located at 0 mm (fully retracted), 12 mm, 70 mm, and the total travel of 82 mm, making it ideal for two-step clamping or sorting tasks requiring a short final advance.
Each piston section delivers a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa. The unit features a 25 mm diameter rod, PT3/8 ports, and an adjustable air cushion length of 28 mm to manage end-of-stroke impact. The compact body has a base length A(SCT) of 296 mm.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X12 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X12 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 70 / 12 mm |
| Total travel | 82 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) | 70 mm |
| P2 (section 2) | 12 mm |
| P3 (both extended) | 82 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 SCT80X70X12
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×12 | 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 SCT80X70X12 Is Used
Two-Step Clamping
Rapidly advance 70 mm to a pre-clamp position, then use the 12 mm stroke to apply final clamping force, preventing part damage from high-speed impact.
Sorting Gate Actuation
Control a diverter gate with a 12 mm retracted safe position, a 70 mm mid-stroke for one lane, and the full 82 mm extension to seal against a second chute.
Dual-Depth Pressing
Perform a primary 70 mm forming stroke followed by a precise 12 mm coining or embossing step, all within a single compact tandem cylinder package.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X70X12 the Right Cylinder?
Select the SCT tandem cylinder when an application needs a short, distinct secondary position without the complexity of two separate actuators and external stops. This 80 mm bore model provides substantial force for medium-to-heavy tooling, but if the load is lighter, stepping down to a 63 mm bore offers a push force of 1559 N per section at 0.5 MPa, which may reduce air consumption. For a direct replacement, match the 80 mm bore, the 70 mm and 12 mm strokes, PT port thread, and basic mounting configuration exactly. If a section stroke exceeds 300 mm, consider adding an external guide to protect the 25 mm rod from side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 70 + 12 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 SCT80X70X12 FAQ
This tandem cylinder provides four discrete mechanical stops. The rod positions are at 0 mm (fully retracted), 12 mm (secondary stroke only), 70 mm (primary stroke only), and the total combined travel of 82 mm (both sections extended).
Yes, it is designed to consolidate two independent motion steps into one axis. To ensure a compatible replacement, the new unit must match the original's 80 mm bore, have both a 70 mm and a 12 mm stroke section, and use the same PT port thread and basic mounting style.
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 SCT80X70X12
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.