Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X475
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X475 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 475mm give 4 controllable stop positions across a 600mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1125 mm
- Stroke 2475 mm
- Total travel600 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X475
The SCT100X125X475 is a double-acting tandem cylinder that delivers four fixed rod positions from its two integrated piston sections: fully retracted (0 mm), first extension (125 mm), second extension (475 mm), and full combined travel (600 mm). Each 100 mm bore section generates a substantial 3927 N of push force at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty material handling tasks requiring multiple stop points.
This tie-rod cylinder uses a 25 mm diameter rod with an M20x1.5 male thread and PT1/2 ports. The adjustable pneumatic cushion at each end has a 29 mm cushion length, providing smooth deceleration for high-inertia loads across the 600 mm total stroke. The body length A(SCT) is 308 mm, and the cylinder operates on standard 40 µm filtered air within a -20 to +70 °C range with its default TPU seals.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X475 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X475 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 125 / 475 mm |
| Total travel | 600 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) | 125 mm |
| P2 (section 2) | 475 mm |
| P3 (both extended) | 600 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 SCT100X125X475
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×475 | 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 SCT100X125X475 Is Used
Two-Stage Pallet Stop
Use the 125 mm stroke to raise a stop blade for pallet separation and the full 600 mm travel to lift and transfer the pallet onto a perpendicular conveyor, controlling two logistics actions with one cylinder.
Multi-Depth Press Feed
The 125 mm stroke positions a part for a shallow pre-form operation, while the 475 mm stroke advances it into a deep drawing die, ensuring precise material placement for both press stages.
Selective Assembly Pusher
Program the cylinder to push components to a 125 mm staging nest or a 475 mm final assembly station. The 600 mm total travel clears the line for the next cycle, enabling flexible routing.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X125X475 the Right Cylinder?
Selecting this SCT model is ideal when an application needs two distinct, repeatable extension points without the complexity of servo control or the alignment issues of two separate cylinders. The 125 mm and 475 mm stroke combination provides a short advance for a clamping or locating function and a long stroke for a transfer or ejection move, all on a single rigid rod line. For applications requiring a higher force density, stepping up is not possible as 100 mm is the maximum SCT bore; for lighter, faster cycles, the 80 mm bore SCT80X125X475 provides 2513 N of push force per section at 0.5 MPa.
A direct replacement must match the 100 mm bore, both the 125 mm and 475 mm strokes, PT port thread, and basic mounting configuration. If the original cylinder has a magnet for sensors, ensure the replacement code includes the -S suffix. Given the 475 mm section stroke, ensure the load is guided and supported to prevent side-loading and rod bending, especially when approaching full extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 475 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 SCT100X125X475 FAQ
This tandem cylinder provides four discrete positions: 0 mm (fully retracted), 125 mm (first section extended), 475 mm (second section extended), and 600 mm (both sections extended for total travel). The stops are fixed by the two stroke lengths and are selected by pressurizing the appropriate cylinder ports.
The force output is per actuated piston section, not a sum of both. Each 100 mm bore section delivers 3927 N push and 3681 N pull at 0.5 MPa. When moving between positions, the driving force corresponds to the active section, allowing you to match the load requirement precisely without a combined force spike.
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