Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 75mm give 4 controllable stop positions across a 100mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 125 mm
- Stroke 275 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S
The SCT80X25X75S is a tandem multi-position pneumatic cylinder that provides four distinct rod positions: fully retracted (0 mm), 25 mm, 75 mm, and the combined total travel of 100 mm. Each of its two 80 mm bore sections generates 2513 N of push force at 0.5 MPa, making it a robust actuator for tasks requiring multiple fixed stop points without complex servo controls.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback. The cylinder features a 25 mm diameter rod, PT3/8 ports, and a 28 mm adjustable air cushion on each section to manage deceleration. Its total body length A(SCT) is 296 mm, providing a compact envelope for the 100 mm total stroke.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 25 / 75 mm |
| Total travel | 100 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) | 75 mm |
| P3 (both extended) | 100 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 SCT80X25X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT80X25X75S Is Used
Two-Stage Sorting Gate
Actuates a diverter gate to three distinct positions—retracted for lane A, 25 mm for lane B, and 100 mm for lane C—using simple pneumatic valve logic to pressurize each section independently.
Multi-Depth Pressing
Provides a short 25 mm stroke for a light pre-press operation and a longer 75 mm stroke for a full-depth forming cycle, with the combined 100 mm stroke used for part ejection.
Sequential Part Feeding
Controls a feed mechanism with four precise stop positions (0, 25, 75, 100 mm) to handle different component lengths on an automated assembly line, with sensor confirmation at each step via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S the Right Cylinder?
Select the SCT80X25X75S when your application requires four distinct linear positions without the complexity of two independent cylinders and external hard stops. If the 2513 N push force at 0.5 MPa is insufficient, consider stepping up to the SCT100 bore, which offers 3927 N per section. For a lower force requirement, the SCT63 bore provides 1559 N. A direct replacement must match the 80 mm bore, both 25 mm and 75 mm strokes, PT port thread, basic mounting, and the -S magnet option to ensure sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 75 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 SCT80X25X75S FAQ
This cylinder provides four discrete positions: 0 mm (fully retracted), 25 mm (section 1 extended), 75 mm (section 2 extended), and 100 mm (both sections extended, which is the sum of the two strokes).
The SCT integrates two piston sections on a single common rod, guaranteeing coaxial alignment and reducing the overall footprint compared to mounting two separate cylinders back-to-back. It simplifies plumbing and eliminates the need to synchronize two independent actuators, but the positions are fixed by the ordered strokes and are not infinitely adjustable.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.