Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X25SLB
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X25SLB is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 25mm give 3 controllable stop positions across a 50mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 125 mm
- Stroke 225 mm
- Total travel50 mm
- Positions3 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X25SLB
The SCT80X25X25S-LB is a double-acting multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), 25 mm, and the combined total travel of 50 mm. Each 80 mm bore piston section generates a push force of 2513 N at 0.5 MPa, making it suitable for compact sorting or diverting tasks where two distinct extended stops are needed without complex servo controls.
This model includes a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors and is equipped with an LB-style axial foot mount for stable surface installation. The 25 mm diameter rod, PT3/8 ports, and 28 mm adjustable air cushion at each end provide robust guidance and deceleration. The body length A(SCT) is 296 mm, ensuring a rigid tie-rod assembly for repetitive stopping operations.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X25SLB Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X25SLB |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 25 / 25 mm |
| Total travel | 50 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) | 25 mm |
| P2 (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 SCT80X25X25SLB
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT80X25X25SLB Is Used
3-Position Diverter Gate
Actuates a conveyor gate to three distinct positions—closed, partial bypass, and full divert—using the 0, 25, and 50 mm stops for flexible material routing.
Two-Stage Part Ejection
Provides a two-step push sequence for ejecting parts: a 25 mm initial dislodge stroke followed by a full 50 mm clearance stroke, all from a single cylinder body.
Multi-Stop Clamping Fixture
Offers two distinct clamping depths (25 mm and 50 mm) for processing different part thicknesses in a single fixture, with sensor confirmation at each position via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X25SLB the Right Cylinder?
Choose the SCT80 tandem when your application requires two fixed extended positions from a single pneumatic circuit, eliminating the need to synchronize two separate cylinders. The 80 mm bore provides 2513 N of push force per section at 0.5 MPa. If your load requires higher force, consider stepping up to the 100 mm bore (3927 N push at 0.5 MPa); for a lighter, more compact solution, the 63 mm bore offers 1559 N.
For a direct replacement, match the 80 mm bore, both 25 mm strokes, PT port thread, LB foot mounting, and the -S magnet option. The built-in magnet allows easy integration of reed or solid-state sensors to confirm arrival at each of the three positions. Note that if the load must be held at an intermediate stop without continuous air pressure, an external pilot-operated check valve or rod lock is required.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 25 + 25 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 SCT80X25X25SLB FAQ
This model provides 3 distinct mechanical stop positions because both piston sections have an equal 25 mm stroke. The rod positions are fully retracted (0 mm), extended by the first section (25 mm), and fully extended by both sections together (50 mm total travel).
Yes, the SCT80X25X25S-LB is designed to replace two individual cylinders or an SC cylinder with external hard stops. It provides two fixed extended positions (25 mm and 50 mm) from a single tie-rod body, simplifying mounting, reducing air plumbing, and ensuring the stops are mechanically fixed relative to each other.
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