Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X30S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X30S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 30mm give 3 controllable stop positions across a 60mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 130 mm
- Stroke 230 mm
- Total travel60 mm
- Positions3 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X30S
The SCT80X30X30S is a double-acting multi-position cylinder that delivers three precise, repeatable stop positions along its 60 mm total stroke: fully retracted (0 mm), 30 mm, and 60 mm. Each of the two piston sections provides a push force of 2513 N at 0.5 MPa, making it a robust actuator for short-throw, multi-stop tasks. The integrated magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for reliable end-of-stroke or mid-position sensing.
This 80 mm bore tie-rod cylinder features a 25 mm diameter piston rod, PT3/8 ports, and a 28 mm adjustable air cushion on each section for smooth deceleration. With a body length A(SCT) of 296 mm, it fits compactly into machinery where two separate cylinders would be bulkier and require complex sequencing. The operating pressure range is 0.15 to 1.0 MPa, and the standard TPU seals suit ambient temperatures from -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X30S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X30S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 30 / 30 mm |
| Total travel | 60 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 30 mm |
| P2 (both extended) | 60 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 SCT80X30X30S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT80X30X30S Is Used
3-Position Diverter Gate
Actuates a diverter gate on a conveyor to three distinct positions: home, mid-divert, and full-divert. The 30 mm steps provide precise lane selection for small packages, with sensor confirmation at each stop via the built-in magnet.
Two-Depth Clamping Fixture
Provides two clamping depths (30 mm and 60 mm) for a CNC fixture holding parts of varying thicknesses. The operator selects the position by pressurizing the appropriate cylinder section, ensuring consistent clamping force of 2513 N at 0.5 MPa.
Multi-Stop Label Applicator
Powers a tamp pad with three discrete extension points for applying labels to products at different heights. The short, 30 mm increments allow for rapid cycling between positions without overshoot, aided by the adjustable air cushion.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X30S the Right Cylinder?
Selecting the SCT80X30X30S means choosing a tandem cylinder that provides three fixed positions without the need for external hard stops or complex valve logic to synchronize two independent actuators. If your application requires a higher force per section, consider stepping up to the 100 mm bore SCT100, which delivers 3927 N of push at 0.5 MPa. For a lighter, more compact solution, the 63 mm bore SCT63 provides 1559 N of push.
When replacing an existing unit, ensure the new cylinder matches the 80 mm bore, both 30 mm section strokes, PT port thread, and the SCT-specific mounting style. The built-in magnet (-S suffix) is essential if your control system relies on barrel-mounted magnetic sensors for position feedback. Since the total stroke is short, side-loading and rod bending are minimal, but always align the load axially with the rod to maximize seal and bearing life.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 30 + 30 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 SCT80X30X30S FAQ
This model provides 3 distinct mechanical stop positions because both section strokes are equal (30 mm). The rod end can be positioned at 0 mm (fully retracted), 30 mm (one section extended), and 60 mm (both sections extended, total travel).
No, like all standard pneumatic cylinders, the SCT80X30X30S will not hold its position if air pressure is lost or the valve centers. The piston can drift. To safely hold a load at the mid-position without live pressure, you must add an external rod lock or a pilot-operated check valve on the relevant section's port.
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 SCT80X30X30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.