Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X130X120SN
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X130X120SN is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 130mm and 120mm give 4 controllable stop positions across a 250mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1130 mm
- Stroke 2120 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X130X120SN
The AirTAC SCT80X130X120SN is a double-acting multi-position tandem cylinder that delivers four discrete rod stops: 0 mm (fully retracted), 130 mm, 120 mm, and the total extended length of 250 mm. By pressurizing the two piston sections independently or together, this 80 mm bore unit provides a compact alternative to complex servo systems for fixed-sequence positioning tasks. Each section generates a push force of 2513 N at 0.5 MPa, and the robust 25 mm diameter rod resists side-load forces in multi-stop applications.
This specific model is factory-built with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke or intermediate position confirmation. The NBR (-N) seal material offers reliable performance across the standard operating temperature range, while the 28 mm adjustable air cushion in each section decelerates the piston smoothly, reducing end-cap impact. The body length A(SCT) is 296 mm, providing a rigid tie-rod construction for industrial environments.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X130X120SN Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X130X120SN |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 130 / 120 mm |
| Total travel | 250 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) | 130 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 250 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 SCT80X130X120SN
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×130 | Stroke 1 (section 1) in mm. |
| ×120 | 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 SCT80X130X120SN Is Used
Two-Stage Sorting Gate
Operates a diverter gate with three distinct open positions (130 mm, 120 mm, 250 mm) to route packages to different conveyor lanes based on size or barcode data.
Multi-Depth Pressing
Provides two different pressing depths (130 mm and 250 mm) for a forming or assembly operation, allowing a single machine to process two product variants without manual changeover.
Sequential Clamping Fixture
Clamps a workpiece with a light initial force at the 120 mm position, then applies full clamping pressure at the 250 mm total travel position, preventing damage to delicate components.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X130X120SN the Right Cylinder?
Select the SCT80X130X120SN when your application requires four fixed mechanical positions without the cost of a servo-electric actuator. This tandem cylinder is superior to using two separate standard cylinders with external stops, as it ensures perfect axial alignment and simplifies the pneumatic circuit. For higher force requirements, consider stepping up to the 100 mm bore SCT series, which delivers 3927 N of push per section at 0.5 MPa. A direct replacement must match the 80 mm bore, 130 mm first stroke, 120 mm second stroke, PT port thread, basic mounting configuration, and the -S magnet option for sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 130 + 120 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 SCT80X130X120SN FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 130 mm (first section extended), 120 mm (second section extended), and 250 mm (both sections extended). The positions are achieved by pressurizing the two piston sections independently or simultaneously.
No, the SCT80X130X120SN does not have a mechanical locking or braking feature. If air pressure is exhausted or a directional valve centers, the piston rod will drift or drop under load. To safely hold a position without live pressure, you must add an external rod lock, a pilot-operated check valve, or a mechanical brake to the system.
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