Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X125
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X125 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 125mm give 3 controllable stop positions across a 250mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1125 mm
- Stroke 2125 mm
- Total travel250 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X125
The SCT100X125X125 is a tandem multi-position cylinder that delivers three distinct rod positions—0 mm, 125 mm, and 250 mm—by pressurising its two 125 mm stroke sections independently or together. Each piston section generates 3927 N of push force at 0.5 MPa, scaling to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty material handling gates that require a mid-point stop.
Built on a rugged tie-rod design with a 25 mm diameter rod and M20x1.5 rod thread, this 100 mm bore cylinder uses PT1/2 ports and incorporates a 29 mm adjustable air cushion in each section to decelerate the load smoothly. The body length A(SCT) is 308 mm, providing a compact tandem package for applications where two separate cylinders would consume excessive space.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X125 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X125 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 125 / 125 mm |
| Total travel | 250 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 125 mm |
| P2 (both extended) | 250 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 SCT100X125X125
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×125 | 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 SCT100X125X125 Is Used
3-Way Diverter Gates
Actuates a chute or gate to three fixed positions—retracted, mid-point, and extended—for sorting bulk materials or parcels onto separate conveyors.
Two-Stage Clamping
Provides a partial-close position at 125 mm for component alignment, followed by full clamping force at the 250 mm extended position in assembly fixtures.
Multi-Stop Pusher
Pushes a workpiece to a 125 mm pre-stage location for inspection, then advances to the full 250 mm stroke to transfer it into the next machining station.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X125 the Right Cylinder?
Select the SCT100X125X125 when your process needs a robust, three-position actuator without the complexity of dual cylinders and external hard stops. If the 3927 N push per section at 0.5 MPa exceeds your requirement, stepping down to an 80 mm bore (2513 N push at 0.5 MPa) can reduce air consumption while still offering the same 125 mm + 125 mm stroke combination. For a drop-in replacement, match the 100 mm bore, both 125 mm strokes, PT port thread, and basic mounting style exactly.
With each section stroke under 300 mm, rod bending from side loads is typically not a primary concern in a well-aligned installation, but always centre the load on the rod axis to maximise seal and bearing life.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 125 + 125 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 SCT100X125X125 FAQ
It provides three distinct mechanical stop positions: 0 mm (fully retracted), 125 mm (first section extended), and 250 mm (both sections extended, total travel). Because both stroke sections are equal, the mid-point is exactly halfway.
No, like any standard pneumatic cylinder, it will drift if pressure is lost or the valve centres. To hold a load at the mid-position without live pressure, you must add an external rod brake or a pilot-operated check valve on the relevant section's port.
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 SCT100X125X125
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.