Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X260X20S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X260X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 260mm and 20mm give 4 controllable stop positions across a 280mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1260 mm
- Stroke 220 mm
- Total travel280 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X260X20S
The SCT100X260X20S is a double-acting multi-position cylinder that provides four fixed rod positions by combining two independent piston sections on a common rod line. With strokes of 260 mm and 20 mm, the reachable stops are 0 mm (fully retracted), 20 mm, 260 mm, and the total travel of 280 mm. Each section delivers a powerful push force of 3927 N at 0.5 MPa, driven through a robust 25 mm diameter rod.
This model includes a built-in magnet, designated by the 'S' suffix, allowing for direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position sensing. The body has a total length A of 308 mm and uses a 29 mm adjustable air cushion to decelerate the piston smoothly at both ends of the 280 mm combined stroke. Standard PT ports (1/2 inch) and TPU seals complete the configuration, suiting it for general industrial environments from -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X260X20S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X260X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 260 / 20 mm |
| Total travel | 280 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) | 260 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 280 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 SCT100X260X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×260 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT100X260X20S Is Used
Two-Stage Part Diverting
Extend to 20 mm for a low-profile divert, then to 260 mm for a full-reach reject lane, all from one compact tandem unit.
Sequential Clamping
Use the 20 mm stroke for a light initial contact clamp, followed by the full 260 mm stroke to apply high-force holding pressure on a larger workpiece.
Dual-Depth Pressing
Achieve a shallow 20 mm pre-form depth and a deep 260 mm final form depth in a pressing or staking operation with sensor-confirmed position feedback.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X260X20S the Right Cylinder?
Select the SCT100X260X20S when your application requires a long primary stroke with a precise secondary offset, avoiding the complexity of two separate actuators and their mounting hardware. The 100 mm bore provides a per-section push force of 3927 N at 0.5 MPa, stepping up significantly from the 80 mm bore's 2513 N. If a lower force is acceptable, the SCT80 series offers a more compact body length. For replacement, match the 100 mm bore, both the 260 mm and 20 mm strokes, PT port thread, basic mounting, and the integrated magnet (-S suffix). Given the 260 mm stroke on the primary section, ensure the load is guided or supported to prevent excessive side-loading and rod bending during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 260 + 20 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 SCT100X260X20S FAQ
This 4-position cylinder provides discrete mechanical stops at 0 mm (fully retracted), 20 mm, 260 mm, and the total combined travel of 280 mm. These are fixed by the two internal piston sections and are not infinitely adjustable.
Yes, it can replace a setup with two individual cylinders if the required strokes are 260 mm and 20 mm. The replacement must match the 100 mm bore, PT ports, basic mounting, and the -S magnet option. The SCT consolidates the motion into a single, aligned rod line, simplifying mounting and synchronization.
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