Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X50S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 175mm and 50mm give 4 controllable stop positions across a 225mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1175 mm
- Stroke 250 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X50S
The SCT80X175X50S is an 80 mm bore multi-position pneumatic cylinder that delivers four discrete rod stops: 0 mm (fully retracted), 50 mm, 175 mm, and the total extended travel of 225 mm. Each piston section generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa, driven through a rigid 25 mm diameter rod.
This model includes a factory-integrated magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The cylinder body has a base length of 296 mm and uses PT3/8 ports with an adjustable air cushion of 28 mm on each section for smooth deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X50S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 175 / 50 mm |
| Total travel | 225 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) | 175 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 225 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 SCT80X175X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×175 | 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 SCT80X175X50S Is Used
Two-Stage Sorting Gate
Operates a diverter with a 50 mm partial stroke for one lane and a full 175 mm stroke for a second lane, providing three distinct routing positions from a single actuator.
Multi-Depth Pressing
Provides a 50 mm pre-press position and a 175 mm final forming depth, allowing a single cylinder to handle components requiring two different insertion or crimping levels.
Sequential Part Feeding
Executes a primary 175 mm part transfer stroke, then a secondary 50 mm lift stroke to separate the component from the nest, all with sensor-confirmed position verification via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X175X50S the Right Cylinder?
This 4-position unit is ideal when an application requires two independent extension stops plus a full-retract and full-extend position, replacing the complexity of two separate cylinders with external hard stops. The 175 mm and 50 mm stroke combination is well-suited for a primary feed motion with a secondary short-stroke eject or lift function. If lower force is acceptable, the 63 mm bore SCT provides 1559 N of push per section; for higher thrust, the 100 mm bore delivers 3927 N at the same 0.5 MPa.
For replacement, match the 80 mm bore, both strokes (175 mm and 50 mm), PT thread, and the -S magnet option. Note the 175 mm stroke section is within the standard range, but ensure the rod is guided externally if significant side loads are present during the longer extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 175 + 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 SCT80X175X50S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (section 2 extended), 175 mm (section 1 extended), and 225 mm (both sections extended, total travel).
Yes, if your sequence requires two fixed extension points. The SCT80X175X50S consolidates the functionality into one assembly, but ensure the per-section force of 2513 N at 0.5 MPa meets your load requirements for each independent move, as the forces do not combine.
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