Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X400S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X400S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 400mm give 4 controllable stop positions across a 450mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 150 mm
- Stroke 2400 mm
- Total travel450 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X400S
This SCT80X50X400S multi-position cylinder creates four fixed rod positions: fully retracted (0 mm), 50 mm, 400 mm, and the combined 450 mm total travel. Each 80 mm bore section generates 2513 N of push force at 0.5 MPa, driven by a 25 mm diameter hard-chrome piston rod through PT3/8 ports. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for end-of-stroke or intermediate position confirmation.
The tie-rod construction houses a 28 mm air cushion at each end section, smoothing out the 30-800 mm/s speed range. With a body length A of 296 mm, this unit fits into multi-stop feeding or sorting stations where a single actuator must reliably hit four distinct mechanical stops without the complexity of two separate cylinders and external hard stops.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X400S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X400S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 50 / 400 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) | 50 mm |
| P2 (section 2) | 400 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 SCT80X50X400S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×400 | 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 SCT80X50X400S Is Used
Four-Position Diverter Gate
Directs product flow to four separate lanes or chutes by stopping the rod at 0, 50, 400, or 450 mm, simplifying conveyor routing logic with a single actuator.
Multi-Depth Pressing & Forming
Performs two distinct pressing depths (50 mm and 400 mm) in one cycle, plus a full 450 mm stroke for part ejection, eliminating the need for a secondary press station.
Staged Component Insertion
Inserts a part to a shallow 50 mm pre-assembly depth, then drives it to the final 400 mm seat, with sensor feedback at each position confirming the step sequence.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X50X400S the Right Cylinder?
Choose this SCT when your process needs four defined linear positions from one compact assembly, avoiding the alignment and sequencing logic of two independent cylinders. The 400 mm section stroke is substantial; for strokes over 300 mm, evaluate the rod's side-load capacity and consider adding an external guide or rod support to prevent bending under offset loads. If higher per-section thrust is required, step up to the SCT100 series, which provides 3927 N of push force per section at the same 0.5 MPa.
This model is a direct replacement for an existing AirTAC SCT80X50X400S with a built-in magnet, PT thread, and basic mounting. For a drop-in swap, match the 80 mm bore, both the 50 mm and 400 mm section strokes, and the magnetic piston option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 400 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 SCT80X50X400S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (first section extended), 400 mm (second section extended), and 450 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The force is generated per single piston section. For the 80 mm bore, each section delivers 2513 N push and 2268 N pull at 0.5 MPa. Actuating both sections simultaneously does not double the force; it simply extends the rod to the combined 450 mm position with the same single-section thrust.
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