Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X150S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X150S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 300mm and 150mm give 4 controllable stop positions across a 450mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1300 mm
- Stroke 2150 mm
- Total travel450 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X150S
The SCT80X300X150S is a double-acting multi-position cylinder that delivers four distinct mechanical stops along a 450 mm total stroke. The rod extends to 150 mm when the rear section is pressurized, 300 mm with the front section, and the full 450 mm when both sections are activated simultaneously. Each piston section generates 2513 N of push force at 0.5 MPa, providing robust power for sequenced linear movements.
This model features a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 25 mm diameter rod and 28 mm air cushion at each end ensure reliable deceleration, while the PT3/8 ports supply the two independent air circuits. The body length A(SCT) is 296 mm.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X150S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X150S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 300 / 150 mm |
| Total travel | 450 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) | 150 mm |
| P3 (both extended) | 450 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 SCT80X300X150S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×300 | Stroke 1 (section 1) in mm. |
| ×150 | 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 SCT80X300X150S Is Used
3-Way Diverter Gates
Operates a gate with three distinct positions—closed, partial open at 150 mm, and full open at 300 mm—to sort packages onto different conveyor lanes based on a control signal.
Two-Depth Pressing
Provides two controlled pressing depths in a single compact unit. The first stage advances 150 mm for a pre-form operation, and the second stage extends to 300 mm for the final press stroke.
Multi-Stop Part Transfer
Shifts a transfer arm to a 150 mm pick position, a 300 mm intermediate inspection stop, and a 450 mm place position, all from one tandem cylinder with sensor-confirmed stops.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X300X150S the Right Cylinder?
Choose the SCT tandem cylinder when an application requires two or more fixed stop positions without the complexity of servo control or multiple separate actuators. This 80 mm bore unit is a step up from the 63 mm size (1559 N push), offering a substantial force increase for heavier tooling. For even higher thrust, the 100 mm bore provides 3927 N per section.
When replacing this cylinder, match the bore (80), both stroke lengths (300 mm and 150 mm), the PT port thread, and the integrated magnet (-S). With a 300 mm front-section stroke, ensure the guided load is supported to prevent side-loading and rod deflection, especially when the rod is fully extended to 450 mm.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 300 + 150 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 SCT80X300X150S FAQ
It provides 4 discrete mechanical stops. The rod positions are fully retracted (0 mm), extended to 150 mm (rear section only), extended to 300 mm (front section only), and fully extended to 450 mm (both sections pressurized).
Yes, in many cases. It combines two strokes into one tandem body, saving space and eliminating the need to synchronize two separate actuators. Ensure the replacement matches the 80 mm bore, both 300 mm and 150 mm strokes, PT ports, and the -S magnet option for sensor compatibility.
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