Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X15X30S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X15X30S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 15mm and 30mm give 4 controllable stop positions across a 45mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 115 mm
- Stroke 230 mm
- Total travel45 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X15X30S
The SCT100X15X30S is a double-acting multi-position cylinder that provides four fixed mechanical stops along a 45 mm total stroke. By pressurising the two piston sections independently or together, the rod extends to 0 mm (retracted), 15 mm, 30 mm, or 45 mm, giving precise repeatability for short-throw indexing tasks. Each 100 mm bore section generates 3927 N of push force at 0.5 MPa, with a 25 mm diameter rod and M20x1.5 rod thread for robust load connection.
A built-in magnet is integrated into the piston, allowing CMSG, DMSG, or EMSG solid-state and reed sensors to be mounted directly on the tie-rod barrel for end-of-stroke or intermediate position feedback. The cylinder body length A(SCT) is 308 mm, and it uses an adjustable pneumatic cushion of 29 mm to decelerate the mass smoothly. Operating pressure spans 0.15–1.0 MPa with PT3/8 ports, making it suitable for compact multi-stop diverters or sorting gates.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X15X30S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X15X30S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 15 / 30 mm |
| Total travel | 45 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) | 15 mm |
| P2 (section 2) | 30 mm |
| P3 (both extended) | 45 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 SCT100X15X30S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×15 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT100X15X30S Is Used
Four-Way Diverter Gate
Uses the four discrete rod positions (0, 15, 30, 45 mm) to align a chute or flap with four separate conveyor lanes, directing parts by pressurising section one, section two, or both.
Multi-Depth Press Insertion
Provides three controlled insertion depths plus a retracted home position for installing components at different heights in an assembly fixture, using the 3927 N push force at 0.5 MPa per section.
Short-Stroke Indexing Stop
Acts as a four-position mechanical stop for a linear slide, giving precise 15 mm increments. The built-in magnet allows sensors to confirm each discrete stop before the next machine cycle.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X15X30S the Right Cylinder?
Select the SCT100X15X30S when a single actuator must deliver four discrete positions in a space-constrained linear axis, replacing the complexity of two separate cylinders and external hard stops. If the per-section force requirement is lower, stepping down to an 80 mm bore provides 2513 N push at 0.5 MPa, while still offering the same four-stop tandem architecture. For direct replacement, match the 100 mm bore, the exact 15 mm and 30 mm section strokes, the PT port thread, and the built-in magnet (-S suffix).
Because the total extended length is short, rod bending is minimal, but always align the load axially with the rod to prevent side-loading the piston bearing. The basic mounting configuration allows the cylinder body to be clamped or supported on a flat surface; optional FA, FB, CA, CB, or LB brackets can be added if the application requires a flange, clevis, or foot mount.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 15 + 30 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 SCT100X15X30S FAQ
It provides four distinct mechanical stop positions: 0 mm (fully retracted), 15 mm (first section extended), 30 mm (second section extended), and 45 mm (both sections extended). These are achieved by pressurising the two piston chambers independently or simultaneously.
Yes, if the original is an SCT100 with 15 mm and 30 mm section strokes, a built-in magnet (-S), and PT port threads. The replacement must match the bore, both stroke lengths, the magnet option, and the port thread type to ensure identical position behaviour and sensor compatibility.
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