Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X50
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X50 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 300mm and 50mm give 4 controllable stop positions across a 350mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1300 mm
- Stroke 250 mm
- Total travel350 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X50
The SCT80X300X50 is an 80 mm bore tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 50 mm, 300 mm, and 350 mm (total travel). Each piston section generates 2513 N of push force at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for material handling tasks requiring a long primary stroke and a short secondary positioning step.
This double-acting multi-position unit uses a 25 mm diameter rod with PT3/8 ports and an M20x1.5 rod thread. The body length A(SCT) is 296 mm, and each end cap incorporates a 28 mm adjustable air cushion to decelerate the piston smoothly at both extremes of the 350 mm total travel.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X50 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X50 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 300 / 50 mm |
| Total travel | 350 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) | 300 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 350 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 SCT80X300X50
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×300 | 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 SCT80X300X50 Is Used
Two-Stage Part Transfer
Executes a rapid 300 mm traverse to move a part between conveyor lines, then a controlled 50 mm advance to place it precisely into a nest or fixture.
Multi-Depth Clamping
Provides a 50 mm initial approach stroke to contact the workpiece, followed by a 300 mm high-force clamping stroke, or vice-versa, for processing different part families.
Dual-Position Sorting Gate
Uses the 0, 50, 300, and 350 mm positions to guide items down four distinct lanes or to four different processing stations from a single infeed point.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X50 the Right Cylinder?
Select the SCT80X300X50 when your application needs a 300 mm transfer stroke followed by a precise 50 mm placement move, all from a single tie-rod assembly without the complexity of two separate cylinders and external stops. If the 2513 N push force per section at 0.5 MPa is more than required, stepping down to a 63 mm bore (1559 N push) can reduce air consumption while still providing four discrete positions. For replacement, match the 80 mm bore, both the 300 mm and 50 mm strokes, PT port thread, and basic mounting configuration. Because the 300 mm section stroke is significant, ensure the external load is guided or supported to prevent side-loading and rod bending during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 300 + 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 SCT80X300X50 FAQ
This cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (section 2 extended), 300 mm (section 1 extended), and 350 mm (both sections extended for total travel).
The SCT integrates two piston sections on a single common rod, guaranteeing a fixed spatial relationship between the 50 mm and 300 mm stops. This eliminates the alignment drift and additional mounting brackets required when coupling two independent cylinders to achieve the same four-position functionality.
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