Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X15S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 15mm give 4 controllable stop positions across a 40mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 125 mm
- Stroke 215 mm
- Total travel40 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X15S
The SCT80X25X15S is a double-acting multi-position pneumatic cylinder that delivers four distinct rod positions from a single compact assembly. By pressurising its two 80 mm bore sections independently or together, the rod extends to 0 mm, 15 mm, 25 mm, or a combined 40 mm stroke, enabling precise mechanical sequencing without complex controls.
Each piston section generates 2513 N of push force at 0.5 MPa, driven through a rigid 25 mm diameter rod. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for position feedback, while the 28 mm air cushion at each end provides smooth deceleration. Its tie-rod body has a base length of 296 mm, fitting neatly into multi-stop fixtures.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X15S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 25 / 15 mm |
| Total travel | 40 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) | 25 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 40 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 SCT80X25X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT80X25X15S Is Used
Multi-Stop Sorting Gate
The four positions (0, 15, 25, 40 mm) direct parts into separate chutes, with sensor feedback confirming each stop for reliable diverting.
Two-Depth Pressing
Achieves a shallow 15 mm pre-press and a deeper 25 mm final press in one cycle, using the 2513 N per-section force for consistent forming.
Stepped Part Feeding
Advances components in precise 15 mm and 25 mm increments on a conveyor fixture, with the 25 mm rod resisting side loads during indexing.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X15S the Right Cylinder?
Selecting this SCT model eliminates the need for two separate cylinders and a mounting bracket when a short, four-position linear move is required. The 25 mm and 15 mm strokes create a compact 40 mm total travel that is ideal for tight machine envelopes. If higher force is needed, consider stepping up to the SCT100 series, which provides 3927 N of push per section at the same pressure. For direct replacement, match the 80 mm bore, 25 mm and 15 mm strokes, PT port thread, and the -S magnet option exactly.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 15 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 SCT80X25X15S FAQ
It provides four discrete positions: fully retracted (0 mm), 15 mm extension, 25 mm extension, and the combined total travel of 40 mm. These are fixed by the two piston strokes and selected by pressurising each section individually or both together.
The built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel, providing non-contact position sensing at each stop. This confirms the rod has reached 15 mm, 25 mm, or 40 mm without external flags or brackets.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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