Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X700X100S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X700X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 700mm and 100mm give 4 controllable stop positions across a 800mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1700 mm
- Stroke 2100 mm
- Total travel800 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X700X100S
The SCT80X700X100S is a tandem multi-position cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 100 mm, 700 mm, and the full 800 mm total travel. Achieving these discrete stops by pressurising one or both piston sections eliminates the complexity of multiple actuators for sequenced linear movements. This model features a built-in magnet, allowing direct mounting of CMSG or DMSG sensors along the tie-rod barrel for reliable end-of-stroke or intermediate position sensing.
Each of the two 80 mm bore sections provides a push force of 2513 N at 0.5 MPa, rising to 4523 N at 0.9 MPa. The 25 mm diameter piston rod handles the thrust, while the 28 mm adjustable air cushion at each end decelerates the load smoothly. Note that the 700 mm section stroke is a non-standard, made-to-order length, requiring careful attention to side-load management and external guiding to prevent rod deflection during extension.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X700X100S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X700X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 700 / 100 mm |
| Total travel | 800 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). This configuration exceeds the 500 mm standard section stroke, so it is a non-standard / made-to-order build. 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) | 700 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 800 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 SCT80X700X100S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×700 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT80X700X100S Is Used
Two-Stage Part Transfer
Uses the 100 mm stroke for a short pick-up movement and the 700 mm stroke for a long traverse to place a part, all from one compact tandem unit.
Multi-Depth Clamping
Provides a light clamp at the 100 mm position and a high-force, deep-set clamp at the full 800 mm extension for processing different workpiece sizes.
Long-Stroke Gate Control
Operates a material gate with a partially open position at 700 mm for large items and a fully open stop at 800 mm, with sensor confirmation at each state via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X700X100S the Right Cylinder?
Select the SCT80X700X100S when a single actuator must provide two distinct extended stops and a long primary stroke, replacing the need for two separate cylinders with external hard stops. If the 2513 N per-section push force at 0.5 MPa is insufficient, stepping up to the SCT100 bore delivers 3927 N per section. For a drop-in replacement, match the 80 mm bore, both the 700 mm and 100 mm strokes, the PT port thread, and the integrated magnet (-S suffix). The extended 700 mm stroke demands a robust external guide system or rod support to prevent buckling and ensure consistent positioning accuracy under side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 700 + 100 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 SCT80X700X100S FAQ
This 4-position cylinder provides discrete mechanical stops at 0 mm (fully retracted), 100 mm (section 2 extended), 700 mm (section 1 extended), and 800 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
It integrates two strokes on a common rod line, saving space and eliminating the need to synchronise two separate actuators. You get four fixed positions from a single mounting footprint, with the -S magnet providing a simple way to add position feedback sensors directly on the body.
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