Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X170
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X170 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 170mm give 4 controllable stop positions across a 210mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 140 mm
- Stroke 2170 mm
- Total travel210 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X170
The SCT100X40X170 is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 40 mm, 170 mm, and the full combined travel of 210 mm. By independently pressurising its two 100 mm bore sections, this double-acting unit provides three distinct extended stopping points without the complexity of servo controls or multiple separate actuators. Each piston section generates a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa.
Built on a durable tie-rod construction with a 25 mm diameter piston rod and PT1/2 port threads, the cylinder body has an A(SCT) length of 308 mm. The adjustable pneumatic end cushion on each section decelerates the load smoothly across the full 30-800 mm/s speed range. This model is supplied with standard TPU seals for an operating temperature range of -20 to +70 °C and comes in a basic mounting configuration, ready to accept SCT-specific brackets.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X170 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X170 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 40 / 170 mm |
| Total travel | 210 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) | 40 mm |
| P2 (section 2) | 170 mm |
| P3 (both extended) | 210 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 SCT100X40X170
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×170 | 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 SCT100X40X170 Is Used
Two-Stage Part Diverting
Use the 40 mm stroke to lift a diverter gate slightly, then the 170 mm stroke to swing it fully across a conveyor junction, sorting packages to three separate lanes from one actuator.
Sequential Clamping & Feed
The 40 mm position can apply a light pre-clamp to a workpiece, followed by the 170 mm stroke to feed it into a machine, with the 210 mm total travel providing a clear loading clearance.
Multi-Depth Press Operations
Achieve a shallow 40 mm pressing depth for one product variant and a deep 170 mm stroke for another on the same assembly station, switching depths purely through pneumatic valve control.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X40X170 the Right Cylinder?
Selecting an SCT100X40X170 is ideal when an application requires two distinct extended positions plus retracted and full-extension stops, replacing the need for two individual cylinders with external hard stops. For lighter loads, stepping down to an 80 mm bore reduces the per-section push force to 2513 N at 0.5 MPa, while the 100 mm bore provides the maximum force in the SCT range. This model is a direct drop-in replacement for another AirTAC SCT100X40X170 with PT ports and basic mounting; ensure both stroke values match exactly. Given the 170 mm stroke on the second section, consider external guide rods if the rod is subjected to significant side loads to prevent bending of the 25 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 170 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 SCT100X40X170 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 40 mm (first section extended), 170 mm (second section extended), and 210 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The force is generated per actuated piston section. Each 100 mm bore section provides 3927 N of push force at 0.5 MPa. The force does not double when both sections are pressurised to reach the 210 mm position; it remains the single-section push force of 3927 N.
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