Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X20S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 20mm give 4 controllable stop positions across a 50mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 130 mm
- Stroke 220 mm
- Total travel50 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X20S
The SCT80X30X20S is a double-acting, multi-position tandem cylinder that delivers four discrete rod positions from two independent piston sections. With strokes of 30 mm and 20 mm, the reachable stops are 0 mm (fully retracted), 20 mm, 30 mm, and the total extended length of 50 mm. Each section provides a push force of 2513 N at 0.5 MPa, giving precise, repeatable positioning for short-throw tasks.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 80 mm bore uses a 25 mm diameter piston rod with an M20x1.5 male thread and PT 3/8 ports. Its adjustable pneumatic cushioning, with a 28 mm cushion length, ensures smooth deceleration at each stop, while the body length A(SCT) is 296 mm.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X20S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 30 / 20 mm |
| Total travel | 50 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) | 30 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 50 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 SCT80X30X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT80X30X20S Is Used
Multi-Level Sorting Gate
Uses the four distinct positions (0, 20, 30, 50 mm) to divert parts into separate chutes on a conveyor line, with sensor confirmation at each stop via the built-in magnet.
Two-Depth Press Insertion
Provides controlled stops at 20 mm and 30 mm for inserting components to different depths in a single cycle, ensuring consistent assembly without tooling changes.
Staged Clamping Fixture
Operates a clamp with a partial-close position (20 mm) for part alignment and a full-close position (50 mm) for machining, with the 25 mm rod offering high rigidity.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X20S the Right Cylinder?
Choose the SCT80X30X20S when an application requires four fixed stop points within a compact 50 mm total stroke, eliminating the complexity of two separate cylinders and external hard stops. If higher force is needed, stepping up to the 100 mm bore provides 3927 N of push per section at 0.5 MPa. For a direct replacement, match the 80 mm bore, both the 30 mm and 20 mm section strokes, PT port thread, basic mounting, and the integrated magnet sensor option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 30 + 20 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 SCT80X30X20S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 20 mm (section 2 extended), 30 mm (section 1 extended), and 50 mm (both sections extended). The stops are fixed by the two different stroke lengths and are not infinitely adjustable.
No, like all standard pneumatic cylinders, the SCT80X30X20S will not lock or hold its position if air pressure is exhausted or lost. If a load must be mechanically held at a specific stop without live pressure, an external rod brake or pilot-operated check valve is required.
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 SCT80X30X20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.