Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X75X5S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X75X5S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 5mm give 4 controllable stop positions across a 80mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 175 mm
- Stroke 25 mm
- Total travel80 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X75X5S
The SCT80X75X5S is a double-acting multi-position cylinder that delivers four precise mechanical stops from two independent piston sections on a common 25 mm rod. The reachable rod positions are 0 mm (fully retracted), 5 mm (section two extended), 75 mm (section one extended), and 80 mm (both sections extended for total travel). Each actuated section provides a robust push force of 2513 N at 0.5 MPa, scaling to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for short-stroke clamping and sequencing tasks.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The cylinder body has an A(SCT) length of 296 mm and features an adjustable pneumatic cushion of 28 mm on each end to manage end-of-stroke impact. With a PT3/8 port and standard TPU seals, it operates reliably in temperatures from -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X75X5S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X75X5S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 75 / 5 mm |
| Total travel | 80 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) | 75 mm |
| P2 (section 2) | 5 mm |
| P3 (both extended) | 80 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 SCT80X75X5S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×5 | 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 SCT80X75X5S Is Used
Two-Stage Part Ejection
Uses the 5 mm stroke to break a part free from a mold with high force, then the 75 mm stroke to fully eject the component onto a conveyor, all from one actuator.
Diverter Gate Control
Positions a diverter gate at four distinct angles: a neutral position (0 mm), a fine-adjustment bypass (5 mm), a main lane divert (75 mm), and a full-open cleaning position (80 mm).
Sequential Clamping
Applies an initial low-force touch clamp at the 5 mm position to align a delicate workpiece, followed by a full-power 75 mm stroke to secure it for a machining operation.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X75X5S the Right Cylinder?
Select the SCT80X75X5S when you need to achieve a short 5 mm advance and a longer 75 mm stroke from a single, compact actuator, eliminating the complexity of two separate cylinders and their mounting hardware. If your application demands higher force, consider stepping up to the SCT100 series, which provides 3927 N of push per section at 0.5 MPa. For a direct replacement, ensure the alternative matches the 80 mm bore, both 75 mm and 5 mm strokes, PT3/8 ports, basic mounting, and the integrated magnet for sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 5 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 SCT80X75X5S FAQ
This tandem cylinder provides four discrete mechanical stops. The rod can be positioned at 0 mm (fully retracted), 5 mm, 75 mm, and the total combined travel of 80 mm. These positions are achieved by pressurizing either the first section, the second section, or both simultaneously.
The SCT80X75X5S integrates two strokes into a single, compact body on a common rod line, which saves space, simplifies plumbing, and ensures perfect axial alignment between the two strokes. A two-cylinder setup would require additional mounting brackets, couplers, and alignment, adding complexity and potential failure points.
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