Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X450X300SLB
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X450X300SLB is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 450mm and 300mm give 4 controllable stop positions across a 750mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1450 mm
- Stroke 2300 mm
- Total travel750 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X450X300SLB
The SCT80X450X300 is a double-acting multi-position tandem cylinder that provides four distinct mechanical stops along a 750 mm total stroke envelope. By pressurising the two piston sections independently or together, the rod extends to 0 mm (retracted), 300 mm, 450 mm, or the full 750 mm. Each 80 mm bore section generates 2513 N of push force at 0.5 MPa, rising to 4523 N at 0.9 MPa, driven through a rigid 25 mm diameter rod.
This specific unit is configured with a built-in magnet (S) for direct mounting of CMSG/DMSG sensors and an LB foot mounting for stable surface installation. The tie-rod construction incorporates a 28 mm adjustable air cushion in each section to manage end-of-stroke deceleration. With a body length of 296 mm plus strokes, it is a compact solution for multi-stop material handling where pneumatic simplicity is preferred over servo complexity.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X450X300SLB Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X450X300SLB |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 450 / 300 mm |
| Total travel | 750 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) | 450 mm |
| P2 (section 2) | 300 mm |
| P3 (both extended) | 750 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 SCT80X450X300SLB
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×450 | Stroke 1 (section 1) in mm. |
| ×300 | 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 SCT80X450X300SLB Is Used
Two-Stage Part Diverting
Operates a diverter gate with four positions: home, divert to lane A (300 mm), divert to lane B (450 mm), and a maintenance/clear position (750 mm). The discrete stops ensure perfect alignment with each conveyor lane.
Multi-Depth Pressing
Provides three distinct pressing depths in a single cycle. The 300 mm stroke performs a pre-form, the 450 mm stroke a main form, and the combined 750 mm stroke ejects the part, all with consistent 4523 N force at 0.9 MPa.
Sequential Product Staging
Advances products through a three-step process on a packaging line. The cylinder first extends 300 mm to position A, then 450 mm to position B, and finally 750 mm to push the completed batch onto the outfeed, controlled by CMSG sensors on the barrel.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X450X300SLB the Right Cylinder?
Choose the SCT tandem cylinder when your application requires up to four fixed, repeatable stop positions without the cost of a servo-driven actuator. This 80 mm bore model suits mid-to-heavy multi-stop tasks; if your force requirement is lower, stepping down to the 63 mm bore (1559 N push at 0.5 MPa) reduces air consumption and physical size. For higher thrust, the 100 mm bore provides 3927 N per section.
To ensure a drop-in replacement, match the 80 mm bore, both the 450 mm and 300 mm section strokes, the PT port thread, the LB foot mounting, and the integrated magnet (-S). Given the 450 mm extension on the first section, ensure the load is guided or supported to prevent rod bending and side-load wear, especially when stopping at the intermediate 300 mm and 450 mm positions.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 450 + 300 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 SCT80X450X300SLB FAQ
It provides four discrete mechanical stop positions: 0 mm (fully retracted), 300 mm, 450 mm, and 750 mm (fully extended). These are achieved by pressurising the two internal piston sections in different combinations, not by continuous servo control.
No. Like all standard pneumatic cylinders, the SCT80X450X300 will drift or drop if pressure is lost or the valve centers. The multi-position feature provides discrete stops under active pressure only. If load holding is required at an intermediate stop without live pressure, you must add an external rod brake or a pilot-operated check valve.
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