Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X2X50
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X2X50 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 2mm and 50mm give 4 controllable stop positions across a 52mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 12 mm
- Stroke 250 mm
- Total travel52 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X2X50
The SCT100X2X50 is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions from two independently controlled piston sections. With strokes of 2 mm and 50 mm, the reachable stops are 0 mm (fully retracted), 2 mm, 50 mm, and the combined total travel of 52 mm. Each 100 mm bore section generates 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa.
Built on a robust tie-rod construction with a 25 mm diameter piston rod and M20x1.5 rod thread, this cylinder uses PT1/2 ports and features a 29 mm adjustable air cushion for smooth end-of-stroke deceleration. The body length A(SCT) is 308 mm, providing a compact envelope for a dual-stroke actuator. It operates on filtered air at 0.15–1.0 MPa across a standard temperature range of -20 to +70 °C with TPU seals.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X2X50 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X2X50 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 2 / 50 mm |
| Total travel | 52 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) | 2 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 52 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 SCT100X2X50
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×2 | 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 SCT100X2X50 Is Used
Two-Depth Pressing
Achieve a light touch at the 2 mm position for part location, then advance to the full 50 mm or 52 mm stroke for the main pressing or forming operation, all with a single actuator.
Multi-Stop Gate Control
Use the four discrete positions to partially or fully open a material gate on a conveyor line, providing precise flow control for different product sizes without needing a servo axis.
Offset Part Ejection
Retract to 0 mm for clearance, extend to 2 mm for a pre-ejection alignment step, then push to 50 mm or 52 mm to eject parts into separate bins based on an inspection signal.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X2X50 the Right Cylinder?
Select the SCT100X2X50 when your application requires two distinct short-travel positions plus a home and a combined extended position, all from a single tie-rod assembly. This model eliminates the complexity of mounting and synchronising two separate cylinders, offering a simpler pneumatic circuit with only two directional valves. The 100 mm bore provides substantial force; if your load is lighter, consider stepping down to an 80 mm bore (2513 N push at 0.5 MPa) to reduce air consumption and physical size.
For a direct replacement, match the 100 mm bore, both strokes (2 mm and 50 mm), PT port thread, and basic mounting configuration. If your existing unit includes a magnet for sensor feedback, specify the -S suffix. Note that the short 2 mm stroke section primarily serves as a precise offset stop rather than a full working stroke.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 2 + 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 SCT100X2X50 FAQ
This model provides four distinct mechanical stop positions: 0 mm (fully retracted), 2 mm (first section extended), 50 mm (second section extended), and 52 mm (both sections extended for total travel). The positions are selected by pressurising either or both cylinder sections.
Yes, it is designed to replace two individually mounted cylinders where you need a home position plus two discrete extended stops. It simplifies mounting, reduces plumbing, and ensures the rod line is inherently aligned. Ensure the replacement matches the 100 mm bore, 2 mm and 50 mm strokes, PT1/2 ports, and your required mounting style.
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