Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X25S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 160mm and 25mm give 4 controllable stop positions across a 185mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1160 mm
- Stroke 225 mm
- Total travel185 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X25S
The SCT100X160X25S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions from its two piston sections: 0 mm (fully retracted), 25 mm, 160 mm, and the combined total travel of 185 mm. With a 100 mm bore, each actuated 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 suitable for heavy-duty sorting or multi-stage clamping.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or intermediate position sensing. The cylinder uses a 25 mm diameter piston rod with an M20x1.5 male thread and PT1/2 ports. Its body length A(SCT) is 308 mm, and the adjustable air cushion on each section is 29 mm long, providing smooth deceleration at every stop.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X25S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 160 / 25 mm |
| Total travel | 185 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 160 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 185 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 SCT100X160X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×160 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT100X160X25S Is Used
Two-Stage Diverter Gate
Uses the 25 mm stroke to crack open a gate for small parcels and the full 185 mm travel to divert large packages on a conveyor line.
Multi-Depth Pressing
Provides a light touch at 25 mm extension for delicate parts and a full 160 mm power stroke for final forming, all with sensor confirmation at each position.
Sequential Clamping Fixture
The first 25 mm position locates a workpiece, while the 160 mm stroke applies full clamping force, with the magnet enabling sensor feedback for automation interlocks.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X160X25S the Right Cylinder?
Choosing an SCT tandem cylinder over two separate standard cylinders reduces mounting complexity and ensures the two strokes are perfectly aligned on a common rod axis. For this 100 mm bore model, the four distinct positions (0, 25, 160, 185 mm) are ideal for a two-step feeding mechanism where a short 25 mm advance is followed by a longer 160 mm push. If your force requirement is lower, stepping down to an 80 mm bore SCT reduces the per-section push force to 2513 N at 0.5 MPa, which can lower air consumption significantly.
When replacing an existing unit, match the 100 mm bore, both the 160 mm and 25 mm stroke sections, the PT port thread, and the built-in magnet feature (-S). Since the 160 mm stroke section is moderate, standard guiding is usually sufficient, but for off-center loads, consider external guide rods to protect the 25 mm rod from bending moments.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 160 + 25 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 SCT100X160X25S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (section 2 extended), 160 mm (section 1 extended), and 185 mm (both sections extended for total travel).
The SCT integrates both strokes on a single common rod, guaranteeing coaxial alignment and reducing the overall envelope compared to two individually mounted cylinders. It also simplifies pneumatic control for sequential positioning, though the per-section force remains identical to a standard SC100 cylinder (3927 N at 0.5 MPa).
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