Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X80
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X80 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 Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 180 mm
- Stroke 280 mm
- Total travel160 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X80
The SCT100X80X80 is a double-acting multi-position tandem cylinder that delivers three precise mechanical stops along its stroke: fully retracted (0 mm), the first section extended (80 mm), and both sections extended for a total travel of 160 mm. Each 100 mm bore section generates a substantial 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, making it a powerful actuator for heavy-duty indexing tasks.
Built on a robust tie-rod construction with a 25 mm diameter piston rod and PT1/2 ports, this model features an adjustable pneumatic cushion at both ends to decelerate the load smoothly. The body length A(SCT) is 308 mm, providing a compact footprint for the force output. The standard TPU seals ensure reliable operation within a -20 to +70 °C temperature range.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X80 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X80 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 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 | PT1/2 |
| 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, 29 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCT100X80X80
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | 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 SCT100X80X80 Is Used
3-Position Diverter Gate
Controls a heavy chute or diverter plate on a conveyor line, reliably stopping at a closed, partial-flow, or full-flow position to sort bulk materials.
Two-Depth Heavy Press
Provides a high-force first-stage press stroke at 80 mm and a full-depth stroke at 160 mm for a two-step forming or compaction process on a single machine.
Multi-Stop Pallet Stop
Acts as a heavy-duty pallet indexer, lifting a stop pin to a mid-height for one pallet size and to full height for another, with a retracted position for free flow.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X80X80 the Right Cylinder?
Select the SCT100X80X80 when your process requires a high-force, 3-position actuator that eliminates the complexity and air consumption of two separate cylinders with external stops. If the force requirement is lower, stepping down to an 80 mm bore SCT80X80X80 reduces the per-section push force to 2513 N at 0.5 MPa, which may be more energy-efficient for lighter payloads. For a direct replacement, ensure the alternative matches the 100 mm bore, both 80 mm strokes, PT port thread, and basic mounting configuration.
Given the 25 mm rod diameter and a combined extension of 160 mm, side-loading should be avoided. If the application involves a non-axial load, external linear guides or a rod support must be used to prevent premature seal wear and rod bending.
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 SCT100X80X80 FAQ
This model provides 3 distinct mechanical stop positions because both stroke sections are equal at 80 mm. The rod positions are 0 mm (fully retracted), 80 mm (one section extended), and 160 mm (both sections extended for total travel).
Yes, a single SCT100X80X80 can often replace a setup with two individual 100 mm bore cylinders and external hard stops, simplifying the pneumatic circuit and mechanical mounting. The replacement must match the 100 mm bore, both 80 mm strokes, PT1/2 ports, and basic mounting to be a drop-in equivalent.
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