Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X50
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X50 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 50mm give 4 controllable stop positions across a 75mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 125 mm
- Stroke 250 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X50
The SCT100X25X50 is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions from a single compact unit. By pressurising its two 100 mm bore sections independently or together, the rod stops precisely at 0 mm (retracted), 25 mm, 50 mm, or the full combined travel of 75 mm, eliminating the need for complex external hard stops.
Each piston section generates a substantial 3927 N of push force at 0.5 MPa (7068 N at the maximum 0.9 MPa operating pressure), driven by a rigid 25 mm diameter rod. The tie-rod body construction has a total length A of 308 mm and integrates adjustable air cushioning with a 29 mm cushion length for smooth deceleration at each stop.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X50 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X50 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 25 / 50 mm |
| Total travel | 75 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) | 25 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 75 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 SCT100X25X50
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT100X25X50 Is Used
Two-Depth Part Insertion
The 25 mm and 50 mm strokes allow a press tool to stop at a shallow pre-insertion depth before driving to the final 50 mm depth, ensuring consistent part seating in assembly fixtures.
Diverter Gate Actuation
Use the four positions (0, 25, 50, 75 mm) to control a multi-lane conveyor diverter gate, directing packages to one of two lanes or a neutral retracted position with a single actuator.
Labeling & Stamping
The precise 25 mm and 50 mm intermediate stops are ideal for a two-step labeling head that applies a label at one pressure and then a secondary wipe-down stroke, all with the high force of the 100 mm bore.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X50 the Right Cylinder?
Select the SCT100X25X50 when your process requires a powerful actuator to index between four distinct positions without the cost and plumbing of two separate cylinders and a mounting bracket. This model uses PT ports and a basic mount; verify your existing setup matches the 1/2 inch port thread. If the 3927 N push force per section is more than needed, the smaller 80 mm bore SCT series provides 2513 N per section at the same pressure, potentially reducing air consumption.
For a drop-in replacement, match the bore (100 mm), both strokes (25 mm and 50 mm), port thread (PT), and ensure the replacement is an AirTAC SCT model. If the 25 mm stroke section is used for a vertical application, confirm the rod is adequately guided, as side loads can cause premature seal wear on the extended rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 50 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 SCT100X25X50 FAQ
It provides four discrete mechanical stops. The rod end can be positioned at 0 mm (fully retracted), 25 mm, 50 mm, and the full extended length of 75 mm by controlling air pressure to each of the two piston sections.
Yes, it is designed to replace a two-cylinder setup where you need a 25 mm and a 50 mm stroke in series. The SCT achieves this in a single, aligned body, saving space and reducing mounting complexity. Ensure the replacement matches the 100 mm bore, both strokes, and PT port thread.
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 SCT100X25X50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.