Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X25S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 25mm give 4 controllable stop positions across a 150mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1125 mm
- Stroke 225 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X25S
The SCT80X125X25S is a double-acting tandem cylinder that delivers four fixed rod positions from two independent piston sections on a common 25 mm rod. With strokes of 125 mm and 25 mm, the reachable stops are 0 mm (fully retracted), 25 mm, 125 mm, and the combined total travel of 150 mm, selected by pressurising the appropriate air ports.
Each 80 mm bore section generates 2513 N of push force at 0.5 MPa and up to 4523 N at the maximum operating pressure of 0.9 MPa. The integrated magnet allows CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing. The cylinder body has an A-length of 296 mm and uses a 28 mm air cushion for smooth end-of-stroke deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X25S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 125 / 25 mm |
| Total travel | 150 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) | 125 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 150 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 SCT80X125X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT80X125X25S Is Used
Two-Stage Sorting Gate
Uses the 25 mm short stroke to nudge a product into a diverter lane and the 125 mm stroke to fully extend a gate for a separate conveyor path, achieving three distinct routing positions.
Multi-Depth Assembly Press
Provides a 25 mm pre-press position for component alignment, a 125 mm main insertion stroke, and a full 150 mm retraction, giving operators three controlled working depths from one cylinder.
Pallet Stop & Metering
The 25 mm stroke acts as a low-profile pallet stop, while the 125 mm stroke fully retracts to release the pallet. The 150 mm combined position can be used for a raised metering or separation function.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X125X25S the Right Cylinder?
Select this SCT when a single actuator must provide four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 125 mm and 25 mm stroke combination is ideal for a primary long travel with a secondary short positioning or ejection step. If a higher per-section force is required, step up to the SCT100 series, which provides 3927 N of push at 0.5 MPa. For a direct replacement, match the 80 mm bore, both strokes (125 mm and 25 mm), the PT port thread, and the built-in magnet (-S suffix). Since the primary stroke exceeds 100 mm, ensure the external load is guided to prevent excessive side-loading and rod bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 25 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 SCT80X125X25S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 25 mm (section 2 extended), 125 mm (section 1 extended), and 150 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a single common rod, guaranteeing a fixed spatial relationship between the two strokes and reducing mounting footprint and alignment complexity. Two separate SC80 cylinders would require external brackets, couplers, and careful sequencing to achieve the same four discrete positions, adding cost and potential misalignment.
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 SCT80X125X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.