Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X175
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X175 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 175mm give 4 controllable stop positions across a 275mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1100 mm
- Stroke 2175 mm
- Total travel275 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X175
The SCT100X100X175 is a double-acting tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 100 mm, 175 mm, and 275 mm (total travel). By pressurising either or both of its two piston sections, you get repeatable, hard stops without external hardware. Each section provides 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa.
With a 100 mm bore and a substantial 25 mm diameter rod, this tie-rod cylinder handles demanding multi-stop tasks. The PT1/2 ports and M20x1.5 rod thread offer generous flow for fast cycle times, while the 29 mm adjustable air cushion at each end absorbs energy smoothly. The body length A(SCT) is 308 mm, making it a compact alternative to two separate 100 mm bore cylinders with external stops.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X175 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X175 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 100 / 175 mm |
| Total travel | 275 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) | 100 mm |
| P2 (section 2) | 175 mm |
| P3 (both extended) | 275 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 SCT100X100X175
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT100X100X175 Is Used
Three-Way Diverter Gate
Use the four discrete positions to direct products to three separate conveyor lanes. Retract for lane 1, extend to 100 mm for lane 2, 175 mm for lane 3, and full 275 mm extension for a reject or bypass chute, all from one compact unit.
Multi-Depth Pressing
Control a press platen to two distinct pressing depths in one cycle. The 100 mm stroke sets a pre-compression stage, and the 175 mm stroke provides a final, deeper form, with the full 275 mm travel used for part ejection.
Staggered Part Feeding
Operate a push-bar feeder that advances parts in two different step lengths. A 100 mm step indexes small components, while the 175 mm stroke handles larger pallets, all without changing tooling or stops.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X100X175 the Right Cylinder?
Choose the SCT100X100X175 when you need four precise, mechanical stop positions from a single actuator, replacing the complexity of two independent cylinders and their valving. If your force requirement is lower, stepping down to an 80 mm bore reduces the per-section push force to 2513 N at 0.5 MPa. For a direct replacement, match the 100 mm bore, both strokes of 100 mm and 175 mm, PT port thread, and basic mounting. Since the longer 175 mm stroke section extends significantly, ensure the rod is guided or the load is aligned to prevent side-loading and bending, especially at higher speeds.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 175 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 SCT100X100X175 FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 100 mm (first section extended), 175 mm (second section extended), and 275 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
It eliminates the need to synchronise two separate cylinders, external stop blocks, and additional mounting brackets. The SCT provides the same 3927 N push force per section at 0.5 MPa from a single, pre-aligned body, saving space, reducing plumbing complexity, and improving the repeatability of your multi-stop application.
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