Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X500X50
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X500X50 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 500mm and 50mm give 4 controllable stop positions across a 550mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1500 mm
- Stroke 250 mm
- Total travel550 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X500X50
The SCT80X500X50 is an 80 mm bore tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 50 mm, 500 mm, and the total travel of 550 mm. Each piston section generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for long-stroke material transfer with an intermediate stop.
Built on a rugged tie-rod design with a 25 mm diameter piston rod and PT3/8 ports, this cylinder uses a 28 mm adjustable air cushion to decelerate the mass smoothly at each end of the 500 mm stroke. The body length A(SCT) is 296 mm, providing a compact tandem package despite the long primary stroke.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X500X50 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X500X50 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 500 / 50 mm |
| Total travel | 550 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) | 500 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 550 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 SCT80X500X50
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×500 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT80X500X50 Is Used
Two-Stage Part Transfer
Extends quickly to 500 mm for a long transfer, pauses at the 50 mm intermediate stop for a secondary operation like inspection, then fully retracts.
Dual-Depth Sorting Gate
Uses the 50 mm and 550 mm positions to divert packages into two separate lanes from a single conveyor line, controlled by pressurizing different cylinder sections.
Long-Stroke Clamping with Approach
Advances rapidly 500 mm to the workpiece, then uses the final 50 mm stroke section to apply a controlled clamping force without impacting the part.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X500X50 the Right Cylinder?
This 4-position configuration is ideal when an application requires a long primary travel of 500 mm with a precise intermediate dwell at 50 mm, eliminating the need for two separate cylinders and a complex valve setup. If your force requirement is lower, stepping down to the 63 mm bore provides 1559 N of push per section at 0.5 MPa, while stepping up to the 100 mm bore offers 3927 N. A direct replacement must match the 80 mm bore, both strokes (500 mm and 50 mm), PT port thread, and basic mounting. Because the primary stroke reaches 500 mm, ensure the rod is externally guided or the load is centered to prevent side-loading and rod bending during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 500 + 50 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 SCT80X500X50 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm, 500 mm, and the combined total stroke of 550 mm. These are fixed positions, not infinitely adjustable.
The force is generated per actuated piston section. For the 80 mm bore, a single section produces 2513 N of push force at 0.5 MPa. The force does not double when both sections are pressurized to reach the 550 mm position; it remains the single-section output.
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