Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X200S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X200S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 200mm give 4 controllable stop positions across a 280mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 180 mm
- Stroke 2200 mm
- Total travel280 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X200S
The AirTAC SCT80X80X200S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops from two pneumatic sections on a common rod line. With strokes of 80 mm and 200 mm, the reachable positions are 0 mm (fully retracted), 80 mm, 200 mm, and the full 280 mm total travel, making it a compact alternative to two separate actuators for sequenced motion.
Each 80 mm bore section generates 2513 N of push force at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa. The cylinder features a 25 mm diameter rod with an M20x1.5 male thread, PT3/8 ports, and a 28 mm adjustable air cushion at each end. A built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG sensors for non-contact position feedback.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X200S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X200S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 80 / 200 mm |
| Total travel | 280 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) | 80 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 280 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 SCT80X80X200S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT80X80X200S Is Used
Two-Stage Part Diverting
The four discrete positions (0, 80, 200, 280 mm) allow a single gate or diverter plate to route parts to three different conveyor lanes, eliminating multiple actuators and simplifying the control system.
Multi-Depth Press Insertion
Insert bushings or pins to two distinct depths in one cycle. The first section extends 80 mm for a shallow press, and the second adds 200 mm of travel for a full-depth seat, all with a consistent 2513 N push force per stage.
Sequential Clamping Fixture
Use the 80 mm stroke for an initial light-contact position and the 200 mm stroke for full clamping force. The built-in magnet sensors confirm each stop is reached before the next machining operation begins.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X80X200S the Right Cylinder?
Choose the SCT80X80X200S when a single actuator must provide three or four fixed stopping points without the complexity of servo control. It replaces two separate cylinders and external hard stops in applications like two-stage clamping or multi-bin diverting. If the 2513 N push force per section at 0.5 MPa is more than required, stepping down to a 63 mm bore reduces the per-section push to 1559 N while keeping the same 4-position capability.
For direct replacement, match an AirTAC SCT with an 80 mm bore, 80 mm and 200 mm section strokes, PT3/8 ports, and the -S magnet option. The basic mounting configuration accepts the standard SCT accessory set (FA, FB, CA, CB, LB foot mounts). With a combined stroke of 280 mm, ensure the rod is guided if significant side loads are present to prevent bending and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 200 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 SCT80X80X200S FAQ
It provides four distinct mechanical stops: 0 mm (fully retracted), 80 mm (first section extended), 200 mm (second section extended), and 280 mm (both sections extended). Because the two strokes are different, all four positions are unique.
Yes. The -S suffix in SCT80X80X200S indicates a built-in magnet band on the piston, making it fully compatible with AirTAC CMSG, DMSG, and EMSG series sensors. These clamp directly onto the tie-rod barrel to detect each of the four stop positions.
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