Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 80mm give 3 controllable stop positions across a 160mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 280 mm
- Total travel160 mm
- Positions3 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80S
The SCT80X80X80S is a double-acting, multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), extended to the first stroke (80 mm), and fully extended to the combined stroke (160 mm). Each piston section generates a push force of 2513 N at 0.5 MPa, making it suitable for sorting or diverting tasks requiring two precise extension points. The built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for position feedback.
This model features a 25 mm diameter piston rod and PT3/8 port threads. The tie-rod construction provides a robust 296 mm body length A(SCT) and an adjustable air cushion of 28 mm at each end section for smooth deceleration. Operating on filtered air from 0.15 to 1.0 MPa, the TPU seals provide a standard temperature range of -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 80 mm |
| Total travel | 160 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 80 mm |
| P2 (both extended) | 160 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 SCT80X80X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT80X80X80S Is Used
Two-Way Part Sorting
Extend the rod to the first 80 mm stop to divert a part onto one conveyor lane, or fully extend to 160 mm to push it onto a second lane, all from a single compact actuator with sensor-confirmed positions.
Two-Depth Pressing
Use the 80 mm stroke for a shallow forming operation and the full 160 mm stroke for a deeper draw or final pressing stage, achieving two distinct tool depths without changing tooling.
Multi-Stop Feeding
Advance material to a first position at 80 mm for an initial process step, then to the final 160 mm position for a secondary operation, using the cylinder's discrete stops for repeatable indexing.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X80S the Right Cylinder?
Choose the SCT when your application needs two fixed stop positions from a single rod line, eliminating the complexity and alignment issues of coupling two separate cylinders. This 80 mm bore provides 2513 N of push force per section at 0.5 MPa. If your force requirement is lower, consider stepping down to the 63 mm bore (1559 N push at 0.5 MPa); for higher force, the 100 mm bore offers 3927 N push at the same pressure.
For a direct replacement, match the 80 mm bore, both 80 mm strokes, PT port thread, and the built-in magnet (-S suffix). Ensure the mounting style is identical, as this basic model has no included brackets. With a combined stroke of 160 mm, rod bending is typically not a primary concern, but always center the load to minimize side forces on the rod bearing.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 80 + 80 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 SCT80X80X80S FAQ
This cylinder provides 3 discrete mechanical stop positions because both strokes are equal (80 mm). The rod positions are: 0 mm (fully retracted), 80 mm (first section extended), and 160 mm (both sections extended). It does not offer infinitely variable positioning.
Yes, it is a direct form-and-function replacement for any AirTAC SCT with an 80 mm bore, 80 mm and 80 mm strokes, PT ports, and a built-in magnet (-S suffix). Verify that the mounting style (basic in this case) and seal material match your original unit to ensure full compatibility.
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